Error message relating toPackage manager, says Please report.

Asked by Roger Stanley Jarvis on 2021-02-12

Opening Package Manager gives:

E: Clearsigned file '/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_focal_InRelease' contains unsigned lines.
E: The package lists or status file could not be parsed or opened.
E: _cache->open() failed, please report.

1. Where should I report it?
2. How can I correct it?

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Solved by:
Manfred Hampl
Solved:
2021-02-15
Last query:
2021-02-15
Last reply:
2021-02-15
Manfred Hampl (m-hampl) said : #1

Try the following:

Open a terminal window and issue the commands

sudo rm /var/lib/apt/lists/*
sudo apt update

then copy the full output and paste as new comment into your question document.

Roger Stanley Jarvis (rsj102) said : #2

Thank you:
roger@roger-Lite:~$ sudo rm /var/lib/apt/lists/*
[sudo] password for roger:
rm: cannot remove '/var/lib/apt/lists/auxfiles': Is a directory
rm: cannot remove '/var/lib/apt/lists/partial': Is a directory
roger@roger-Lite:~$ sudo apt update
Get:1 http://gb.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:3 http://gb.archive.ubuntu.com/ubuntu bionic InRelease [242 kB]
Get:4 http://dl.google.com/linux/chrome/deb stable InRelease [1,811 B]
Get:5 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:6 http://gb.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Ign:7 http://security.ubuntu.com/ubuntu focal-security InRelease
Get:8 http://security.ubuntu.com/ubuntu focal-security Release [108 kB]
Ign:9 http://archive.canonical.com/ubuntu bionic InRelease
Ign:10 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Get:11 http://archive.canonical.com/ubuntu bionic Release [9,330 B]
Get:12 http://archive.ubuntu.com/ubuntu focal-updates Release [112 kB]
Get:13 http://security.ubuntu.com/ubuntu focal-security Release.gpg [1,554 B]
Get:14 http://archive.canonical.com/ubuntu bionic Release.gpg [819 B]
Get:15 http://archive.ubuntu.com/ubuntu focal-updates Release.gpg [1,554 B]
Err:4 http://dl.google.com/linux/chrome/deb stable InRelease
  Splitting up /var/lib/apt/lists/partial/dl.google.com_linux_chrome_deb_dists_stable_InRelease into data and signature failed
Err:3 http://gb.archive.ubuntu.com/ubuntu bionic InRelease
  Splitting up /var/lib/apt/lists/partial/gb.archive.ubuntu.com_ubuntu_dists_bionic_InRelease into data and signature failed
Get:16 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages [1,560 kB]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [1,544 kB]
Get:18 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [1,718 kB]
Get:19 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe Translation-en [363 kB]
Get:20 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 Metadata [289 kB]
Get:21 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 48x48 Icons [215 kB]
Get:22 http://gb.archive.ubuntu.com/ubuntu bionic-updates/universe DEP-11 64x64 Icons [495 kB]
Get:23 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse i386 Packages [14.3 kB]
Get:24 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [31.8 kB]
Get:25 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse Translation-en [7,300 B]
Get:26 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:27 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse DEP-11 48x48 Icons [29 B]
Get:28 http://gb.archive.ubuntu.com/ubuntu bionic-updates/multiverse DEP-11 64x64 Icons [2,638 B]
Get:29 http://gb.archive.ubuntu.com/ubuntu bionic-backports/main i386 Packages [10.0 kB]
Get:30 http://gb.archive.ubuntu.com/ubuntu bionic-backports/main amd64 Packages [10.0 kB]
Get:31 http://gb.archive.ubuntu.com/ubuntu bionic-backports/main Translation-en [4,764 B]
Get:32 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 Packages [10.3 kB]
Get:33 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe i386 Packages [10.3 kB]
Get:34 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe Translation-en [4,588 B]
Get:35 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [9,292 B]
Get:36 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11 48x48 Icons [2,809 B]
Get:37 http://gb.archive.ubuntu.com/ubuntu bionic-backports/universe DEP-11 64x64 Icons [3,943 B]
Get:38 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages [970 kB]
Get:39 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [916 kB]
Get:40 http://archive.ubuntu.com/ubuntu focal/main i386 Packages [718 kB]
Get:41 http://archive.ubuntu.com/ubuntu focal/main Translation-en_GB [485 kB]
Get:42 http://archive.ubuntu.com/ubuntu focal/main Translation-en [506 kB]
Get:43 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en [298 kB]
Get:44 http://archive.ubuntu.com/ubuntu focal/main amd64 DEP-11 Metadata [494 kB]
Get:45 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 Metadata [48.9 kB]
Get:46 http://archive.ubuntu.com/ubuntu focal/main DEP-11 48x48 Icons [98.4 kB]
Get:47 http://archive.ubuntu.com/ubuntu focal/main DEP-11 64x64 Icons [163 kB]
Get:48 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 48x48 Icons [28.4 kB]
Get:49 http://security.ubuntu.com/ubuntu bionic-security/main DEP-11 64x64 Icons [62.4 kB]
Get:50 http://security.ubuntu.com/ubuntu bionic-security/restricted i386 Packages [13.5 kB]
Get:51 http://security.ubuntu.com/ubuntu bionic-security/restricted amd64 Packages [226 kB]
Get:52 http://archive.ubuntu.com/ubuntu focal/main amd64 c-n-f Metadata [29.5 kB]
Get:53 http://archive.ubuntu.com/ubuntu focal/universe i386 Packages [4,642 kB]
Get:54 http://archive.canonical.com/ubuntu bionic/partner Sources [1,280 B]
Get:55 http://security.ubuntu.com/ubuntu bionic-security/restricted Translation-en [29.9 kB]
Get:56 http://security.ubuntu.com/ubuntu bionic-security/universe i386 Packages [975 kB]
Get:57 http://archive.canonical.com/ubuntu bionic/partner amd64 Packages [1,592 B]
Get:58 http://archive.canonical.com/ubuntu bionic/partner i386 Packages [1,588 B]
Get:59 http://archive.canonical.com/ubuntu bionic/partner Translation-en [1,004 B]
Get:60 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [1,109 kB]
Get:61 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [8,628 kB]
Get:62 http://security.ubuntu.com/ubuntu bionic-security/universe Translation-en [248 kB]
Get:63 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 Metadata [59.8 kB]
Get:64 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 48x48 Icons [20.8 kB]
Get:65 http://security.ubuntu.com/ubuntu bionic-security/universe DEP-11 64x64 Icons [130 kB]
Get:66 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [26.0 kB]
Get:67 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386 Packages [9,208 B]
Get:68 http://security.ubuntu.com/ubuntu bionic-security/multiverse Translation-en [5,272 B]
Get:69 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 DEP-11 Metadata [2,464 B]
Get:70 http://security.ubuntu.com/ubuntu bionic-security/multiverse DEP-11 48x48 Icons [29 B]
Get:71 http://security.ubuntu.com/ubuntu bionic-security/multiverse DEP-11 64x64 Icons [2,638 B]
Get:72 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [489 kB]
Get:73 http://security.ubuntu.com/ubuntu focal-security/main i386 Packages [183 kB]
Get:74 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [107 kB]
Get:75 http://security.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [24.3 kB]
Get:76 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 48x48 Icons [11.0 kB]
Get:77 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 64x64 Icons [16.5 kB]
Get:78 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [6,204 B]
Get:79 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [10.4 kB]
Get:80 http://security.ubuntu.com/ubuntu focal-security/multiverse i386 Packages [2,336 B]
Get:81 http://security.ubuntu.com/ubuntu focal-security/multiverse Translation-en [2,876 B]
Get:82 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 c-n-f Metadata [284 B]
Get:83 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [123 kB]
Get:84 http://security.ubuntu.com/ubuntu focal-security/restricted i386 Packages [14.9 kB]
Get:85 http://security.ubuntu.com/ubuntu focal-security/restricted Translation-en [18.0 kB]
Get:86 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 c-n-f Metadata [392 B]
Get:87 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [536 kB]
Get:88 http://security.ubuntu.com/ubuntu focal-security/universe i386 Packages [422 kB]
Get:89 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [76.1 kB]
Get:90 http://security.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [57.5 kB]
Get:91 http://security.ubuntu.com/ubuntu focal-security/universe DEP-11 48x48 Icons [25.1 kB]
Get:92 http://security.ubuntu.com/ubuntu focal-security/universe DEP-11 64x64 Icons [44.1 kB]
Get:93 http://security.ubuntu.com/ubuntu focal-security/universe amd64 c-n-f Metadata [9,804 B]
Get:94 http://archive.ubuntu.com/ubuntu focal/universe Translation-en_GB [319 kB]
Get:95 http://archive.ubuntu.com/ubuntu focal/universe Translation-en [5,124 kB]
Get:96 http://archive.ubuntu.com/ubuntu focal/universe amd64 DEP-11 Metadata [3,603 kB]
Get:97 http://archive.ubuntu.com/ubuntu focal/universe DEP-11 48x48 Icons [3,016 kB]
Get:98 http://archive.ubuntu.com/ubuntu focal/universe DEP-11 64x64 Icons [7,794 kB]
Get:99 http://archive.ubuntu.com/ubuntu focal/universe amd64 c-n-f Metadata [265 kB]
Get:100 http://archive.ubuntu.com/ubuntu focal/multiverse i386 Packages [74.7 kB]
Get:101 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [144 kB]
Get:102 http://archive.ubuntu.com/ubuntu focal/multiverse Translation-en [104 kB]
Get:103 http://archive.ubuntu.com/ubuntu focal/multiverse Translation-en_GB [105 kB]
Get:104 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 DEP-11 Metadata [48.4 kB]
Get:105 http://archive.ubuntu.com/ubuntu focal/multiverse DEP-11 48x48 Icons [23.1 kB]
Get:106 http://archive.ubuntu.com/ubuntu focal/multiverse DEP-11 64x64 Icons [192 kB]
Get:107 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 c-n-f Metadata [9,136 B]
Get:108 http://archive.ubuntu.com/ubuntu focal/restricted i386 Packages [8,112 B]
Get:109 http://archive.ubuntu.com/ubuntu focal/restricted amd64 Packages [22.0 kB]
Get:110 http://archive.ubuntu.com/ubuntu focal/restricted Translation-en [6,212 B]
Get:111 http://archive.ubuntu.com/ubuntu focal/restricted Translation-en_GB [3,860 B]
Get:112 http://archive.ubuntu.com/ubuntu focal/restricted amd64 c-n-f Metadata [392 B]
Get:113 http://archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [417 kB]
Get:114 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [804 kB]
Get:115 http://archive.ubuntu.com/ubuntu focal-updates/main Translation-en [194 kB]
Get:116 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [264 kB]
Get:117 http://archive.ubuntu.com/ubuntu focal-updates/main DEP-11 48x48 Icons [55.6 kB]
Get:118 http://archive.ubuntu.com/ubuntu focal-updates/main DEP-11 64x64 Icons [87.9 kB]
Get:119 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [11.7 kB]
Get:120 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages [16.9 kB]
Get:121 http://archive.ubuntu.com/ubuntu focal-updates/multiverse i386 Packages [4,180 B]
Get:122 http://archive.ubuntu.com/ubuntu focal-updates/multiverse Translation-en [5,076 B]
Get:123 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:124 http://archive.ubuntu.com/ubuntu focal-updates/multiverse DEP-11 48x48 Icons [29 B]
Get:125 http://archive.ubuntu.com/ubuntu focal-updates/multiverse DEP-11 64x64 Icons [2,638 B]
Get:126 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 c-n-f Metadata [536 B]
Get:127 http://archive.ubuntu.com/ubuntu focal-updates/restricted i386 Packages [16.2 kB]
Get:128 http://archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [146 kB]
Get:129 http://archive.ubuntu.com/ubuntu focal-updates/restricted Translation-en [21.9 kB]
Get:130 http://archive.ubuntu.com/ubuntu focal-updates/restricted amd64 c-n-f Metadata [436 B]
Get:131 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [739 kB]
Get:132 http://archive.ubuntu.com/ubuntu focal-updates/universe i386 Packages [547 kB]
Get:133 http://archive.ubuntu.com/ubuntu focal-updates/universe Translation-en [153 kB]
Get:134 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [301 kB]
Get:135 http://archive.ubuntu.com/ubuntu focal-updates/universe DEP-11 48x48 Icons [198 kB]
Get:136 http://archive.ubuntu.com/ubuntu focal-updates/universe DEP-11 64x64 Icons [348 kB]
Get:137 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 c-n-f Metadata [15.5 kB]
Reading package lists... Done
W: GPG error: http://dl.google.com/linux/chrome/deb stable InRelease: Splitting up /var/lib/apt/lists/partial/dl.google.com_linux_chrome_deb_dists_stable_InRelease into data and signature failed
E: The repository 'http://dl.google.com/linux/chrome/deb stable InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://gb.archive.ubuntu.com/ubuntu bionic InRelease: Splitting up /var/lib/apt/lists/partial/gb.archive.ubuntu.com_ubuntu_dists_bionic_InRelease into data and signature failed
E: The repository 'http://gb.archive.ubuntu.com/ubuntu bionic InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I probably misunderstand the final note:

roger@roger-Lite:~$ apt-secure(8) manpage
bash: syntax error near unexpected token `8'
roger@roger-Lite:~$ see apt-secure(8) manpage
bash: syntax error near unexpected token `('
roger@roger-Lite:~$ see apt-secure (8) manpage
bash: syntax error near unexpected token `('
roger@roger-Lite:~$

Manfred Hampl (m-hampl) said : #3

The configuration of your package management system seems to be wrong.
You are downloading package lists for Ubuntu focal and for Ubuntu bionic. This is wrong.

For diagnostic purposes please provide the output of the commands

uname -a
lsb_release -crid
cat -n /etc/apt/sources.list
ls -l /etc/apt/sources.list.d/*.list
grep dl.google.com /etc/apt/sources.list /etc/apt/sources.list.d/*.list
grep bionic /etc/apt/sources.list /etc/apt/sources.list.d/*.list

(Remark: the command to look at the apt-secure(8) manpage would have been "man 8 apt-secure", but this most probably will not help)

Roger Stanley Jarvis (rsj102) said : #4

I had 17.10 Artful Aardvark, then responded to the update which gave me focal 20.4, though it seemed not to download completely. A second attempt was better, but I still found a few odd error messages - eg the software download button produces "unable to download because not supported". It does download now, though, since running your previously suggested commands. Also, theDebian and Wayland desktops contained my desktop files but would not actually show them on the desktop - I managed to set this up satisfactorily on Cinnamond, on which I have stayed.

roger@roger-Lite:~$ uname -a
Linux roger-Lite 5.4.70-050470-generic #202010070732 SMP Wed Oct 7 07:57:27 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
roger@roger-Lite:~$ lsb_release -crid
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
roger@roger-Lite:~$ cat -n /etc/apt/sources.list
     1 # deb cdrom:[Ubuntu 17.10 _Artful Aardvark_ - Release amd64 (20171018)]/ artful main restricted
     2
     3 # See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
     4 # newer versions of the distribution.
     5 # deb http://gb.archive.ubuntu.com/ubuntu/ bionic main restricted
     6 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful main restricted
     7
     8 ## Major bug fix updates produced after the final release of the
     9 ## distribution.
    10 # deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
    11 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful-updates main restricted
    12
    13 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
    14 ## team. Also, please note that software in universe WILL NOT receive any
    15 ## review or updates from the Ubuntu security team.
    16 # deb http://gb.archive.ubuntu.com/ubuntu/ bionic universe
    17 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful universe
    18 deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates universe
    19 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful-updates universe
    20
    21 ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
    22 ## team, and may not be under a free licence. Please satisfy yourself as to
    23 ## your rights to use the software. Also, please note that software in
    24 ## multiverse WILL NOT receive any review or updates from the Ubuntu
    25 ## security team.
    26 deb http://gb.archive.ubuntu.com/ubuntu/ bionic multiverse
    27 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful multiverse
    28 deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
    29 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful-updates multiverse
    30
    31 ## N.B. software from this repository may not have been tested as
    32 ## extensively as that contained in the main release, although it includes
    33 ## newer versions of some applications which may provide useful features.
    34 ## Also, please note that software in backports WILL NOT receive any review
    35 ## or updates from the Ubuntu security team.
    36 deb http://gb.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
    37 # deb-src http://gb.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse
    38
    39 ## Uncomment the following two lines to add software from Canonical's
    40 ## 'partner' repository.
    41 ## This software is not part of Ubuntu, but is offered by Canonical and the
    42 ## respective vendors as a service to Ubuntu users.
    43 deb http://archive.canonical.com/ubuntu bionic partner
    44 deb-src http://archive.canonical.com/ubuntu bionic partner
    45
    46 deb http://security.ubuntu.com/ubuntu bionic-security main restricted
    47 # deb-src http://security.ubuntu.com/ubuntu artful-security main restricted
    48 deb http://security.ubuntu.com/ubuntu bionic-security universe
    49 # deb-src http://security.ubuntu.com/ubuntu artful-security universe
    50 deb http://security.ubuntu.com/ubuntu bionic-security multiverse
    51 # deb-src http://security.ubuntu.com/ubuntu artful-security multiverse
    52 deb http://archive.ubuntu.com/ubuntu focal main universe multiverse restricted
    53 deb http://security.ubuntu.com/ubuntu/ focal-security main multiverse restricted universe
    54 deb http://archive.ubuntu.com/ubuntu focal-updates main multiverse restricted universe
roger@roger-Lite:~$ ls -l /etc/apt/sources.list.d/*.list
-rw-r--r-- 1 root root 212 Dec 30 22:56 /etc/apt/sources.list.d/cesar-crea-si-ubuntu-eviacam-artful.list
-rw-r--r-- 1 root root 189 Dec 30 22:56 /etc/apt/sources.list.d/google-chrome.list
-rw-r--r-- 1 root root 194 Dec 30 22:56 /etc/apt/sources.list.d/starlabs-ubuntu-ppa-artful.list
roger@roger-Lite:~$ grep dl.google.com /etc/apt/sources.list /etc/apt/sources.list.d/*.list
/etc/apt/sources.list.d/google-chrome.list:deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
roger@roger-Lite:~$ grep bionic /etc/apt/sources.list /etc/apt/sources.list.d/*.list
/etc/apt/sources.list:# deb http://gb.archive.ubuntu.com/ubuntu/ bionic main restricted
/etc/apt/sources.list:# deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
/etc/apt/sources.list:# deb http://gb.archive.ubuntu.com/ubuntu/ bionic universe
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates universe
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu/ bionic multiverse
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
/etc/apt/sources.list:deb http://gb.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
/etc/apt/sources.list:deb http://archive.canonical.com/ubuntu bionic partner
/etc/apt/sources.list:deb-src http://archive.canonical.com/ubuntu bionic partner
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu bionic-security main restricted
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu bionic-security universe
/etc/apt/sources.list:deb http://security.ubuntu.com/ubuntu bionic-security multiverse
/etc/apt/sources.list.d/cesar-crea-si-ubuntu-eviacam-artful.list:# deb http://ppa.launchpad.net/cesar-crea-si/eviacam/ubuntu bionic main # disabled on upgrade to bionic
/etc/apt/sources.list.d/cesar-crea-si-ubuntu-eviacam-artful.list:# deb-src http://ppa.launchpad.net/cesar-crea-si/eviacam/ubuntu bionic main # disabled on upgrade to bionic
/etc/apt/sources.list.d/starlabs-ubuntu-ppa-artful.list:# deb http://ppa.launchpad.net/starlabs/ppa/ubuntu bionic main # disabled on upgrade to bionic
/etc/apt/sources.list.d/starlabs-ubuntu-ppa-artful.list:# deb-src http://ppa.launchpad.net/starlabs/ppa/ubuntu bionic main # disabled on upgrade to bionic
roger@roger-Lite:~$

Manfred Hampl (m-hampl) said : #5

Try the following:

Open a terminal window and issue the command

sudo gedit /etc/apt/sources.list
This will ask for your password (to confirm an administrative action) and will the open the sources.list configuration file in an editor.
Replace all occurrences of "artful" by "focal", except in the first line (which starts with deb cdrom:...)
Replace all occurrences of "bionic" by "focal"
Scroll down to the end and remove the last three lines.
save the file and close the editor

sudo gedit /etc/apt/sources.list.d/starlabs-ubuntu-ppa-artful.list
Replace all occurrences of "bionic" by "focal"
save the file and close the editor

sudo rm /etc/apt/sources.list.d/cesar-crea-si-ubuntu-eviacam-artful.list

The try again with the commands

sudo rm /var/lib/apt/lists/*
sudo rm /var/lib/apt/lists/partial/*
sudo apt update

and copy/paste all output as done before.

Roger Stanley Jarvis (rsj102) said : #6

roger@roger-Lite:~$
roger@roger-Lite:~$ sudo rm /var/lib/apt/lists/*
[sudo] password for roger:
rm: cannot remove '/var/lib/apt/lists/auxfiles': Is a directory
rm: cannot remove '/var/lib/apt/lists/partial': Is a directory
roger@roger-Lite:~$ sudo rm /var/lib/apt/lists/partial/*
rm: cannot remove '/var/lib/apt/lists/partial/*': No such file or directory
roger@roger-Lite:~$ sudo apt update
Get:1 http://gb.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [109 kB]
Get:3 http://dl.google.com/linux/chrome/deb stable InRelease [1,811 B]
Get:4 http://gb.archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:5 http://gb.archive.ubuntu.com/ubuntu focal-backports InRelease [101 kB]
Get:6 http://archive.canonical.com/ubuntu focal InRelease [12.1 kB]
Get:7 http://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1,085 B]
Get:8 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [739 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe i386 Packages [547 kB]
Get:10 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe Translation-en [153 kB]
Get:11 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [301 kB]
Get:12 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe DEP-11 48x48 Icons [198 kB]
Get:13 http://security.ubuntu.com/ubuntu focal-security/main i386 Packages [183 kB]
Get:14 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe DEP-11 64x64 Icons [348 kB]
Get:15 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe amd64 c-n-f Metadata [15.5 kB]
Get:16 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse i386 Packages [4,180 B]
Get:17 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [489 kB]
Get:18 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages [16.9 kB]
Get:19 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse Translation-en [5,076 B]
Get:20 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:21 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse DEP-11 48x48 Icons [29 B]
Get:22 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse DEP-11 64x64 Icons [2,638 B]
Get:23 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 c-n-f Metadata [536 B]
Get:24 http://security.ubuntu.com/ubuntu focal-security/main Translation-en [107 kB]
Get:25 http://security.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [24.3 kB]
Get:26 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 48x48 Icons [11.0 kB]
Get:27 http://security.ubuntu.com/ubuntu focal-security/main DEP-11 64x64 Icons [16.5 kB]
Get:28 http://security.ubuntu.com/ubuntu focal-security/main amd64 c-n-f Metadata [6,204 B]
Get:29 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [123 kB]
Get:30 http://security.ubuntu.com/ubuntu focal-security/restricted i386 Packages [14.9 kB]
Get:31 http://security.ubuntu.com/ubuntu focal-security/restricted Translation-en [18.0 kB]
Get:32 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 c-n-f Metadata [392 B]
Get:33 http://security.ubuntu.com/ubuntu focal-security/universe i386 Packages [422 kB]
Get:34 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [536 kB]
Get:35 http://gb.archive.ubuntu.com/ubuntu focal/multiverse i386 Packages [74.7 kB]
Get:36 http://security.ubuntu.com/ubuntu focal-security/universe Translation-en [76.1 kB]
Get:37 http://security.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [57.6 kB]
Get:38 http://gb.archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [144 kB]
Get:39 http://gb.archive.ubuntu.com/ubuntu focal/multiverse Translation-en_GB [105 kB]
Get:40 http://security.ubuntu.com/ubuntu focal-security/universe DEP-11 48x48 Icons [25.1 kB]
Get:41 http://security.ubuntu.com/ubuntu focal-security/universe DEP-11 64x64 Icons [44.1 kB]
Get:42 http://security.ubuntu.com/ubuntu focal-security/universe amd64 c-n-f Metadata [9,804 B]
Get:43 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [10.4 kB]
Get:44 http://security.ubuntu.com/ubuntu focal-security/multiverse i386 Packages [2,336 B]
Get:45 http://security.ubuntu.com/ubuntu focal-security/multiverse Translation-en [2,876 B]
Get:46 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 c-n-f Metadata [284 B]
Get:47 http://gb.archive.ubuntu.com/ubuntu focal/multiverse Translation-en [104 kB]
Get:48 http://gb.archive.ubuntu.com/ubuntu focal/multiverse amd64 DEP-11 Metadata [48.4 kB]
Get:49 http://gb.archive.ubuntu.com/ubuntu focal/multiverse DEP-11 48x48 Icons [23.1 kB]
Get:50 http://gb.archive.ubuntu.com/ubuntu focal/multiverse DEP-11 64x64 Icons [192 kB]
Get:51 http://gb.archive.ubuntu.com/ubuntu focal/multiverse amd64 c-n-f Metadata [9,136 B]
Get:52 http://gb.archive.ubuntu.com/ubuntu focal-backports/main amd64 c-n-f Metadata [112 B]
Get:53 http://gb.archive.ubuntu.com/ubuntu focal-backports/restricted amd64 c-n-f Metadata [116 B]
Get:54 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe i386 Packages [2,932 B]
Get:55 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages [4,032 B]
Get:56 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe Translation-en [1,448 B]
Get:57 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe amd64 DEP-11 Metadata [1,768 B]
Get:58 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe DEP-11 48x48 Icons [2,809 B]
Get:59 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe DEP-11 64x64 Icons [3,944 B]
Get:60 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe amd64 c-n-f Metadata [224 B]
Get:61 http://gb.archive.ubuntu.com/ubuntu focal-backports/multiverse amd64 c-n-f Metadata [116 B]
Get:62 http://archive.canonical.com/ubuntu focal/partner Sources [716 B]
Get:63 http://archive.canonical.com/ubuntu focal/partner amd64 Packages [856 B]
Get:64 http://archive.canonical.com/ubuntu focal/partner Translation-en [384 B]
Fetched 5,837 kB in 2s (2,583 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
57 packages can be upgraded. Run 'apt list --upgradable' to see them.
roger@roger-Lite:~$

Manfred Hampl (m-hampl) said : #7

Ok, the errors have disappeared, but your settings still are not fully correct.

Do a similar action as before:

sudo gedit /etc/apt/sources.list

Go through all lines , look for those that start with "deb-src" and put a comment indicator ('#') in front of the lines, which do not have such indicator yet (I guess it is only one occurrence in line 44).

Now do the opposite and remove any comment indicator ('#') that is in a line that starts with 'deb', except the very first line where it should stay. (I guess this requires changes in line 5, 10 and 16)

save the file and close the editor.

Then run the commands

sudo apt update
apt list --upgradable

and copy/paste the output that we can check the results.

Roger Stanley Jarvis (rsj102) said : #8

roger@roger-Lite:~$ sudo gedit /etc/apt/sources.list
[sudo] password for roger:

(gedit:55822): Tepl-WARNING **: 17:26:50.946: GVfs metadata is not supported. Fallback to TeplMetadataManager. Either GVfs is not correctly installed or GVfs metadata are not supported on this platform. In the latter case, you should configure Tepl with --disable-gvfs-metadata.
roger@roger-Lite:~$ sudo apt update
Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [109 kB]
Hit:2 http://archive.canonical.com/ubuntu focal InRelease
Hit:3 http://gb.archive.ubuntu.com/ubuntu focal InRelease
Hit:4 http://dl.google.com/linux/chrome/deb stable InRelease
Get:5 http://gb.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:6 http://gb.archive.ubuntu.com/ubuntu focal-backports InRelease [101 kB]
Get:7 http://gb.archive.ubuntu.com/ubuntu focal/main i386 Packages [718 kB]
Get:8 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 Packages [970 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu focal/main Translation-en [506 kB]
Get:10 http://gb.archive.ubuntu.com/ubuntu focal/main Translation-en_GB [485 kB]
Get:11 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 DEP-11 Metadata [494 kB]
Get:12 http://gb.archive.ubuntu.com/ubuntu focal/main DEP-11 48x48 Icons [98.4 kB]
Get:13 http://gb.archive.ubuntu.com/ubuntu focal/main DEP-11 64x64 Icons [163 kB]
Get:14 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 c-n-f Metadata [29.5 kB]
Get:15 http://gb.archive.ubuntu.com/ubuntu focal/restricted amd64 Packages [22.0 kB]
Get:16 http://gb.archive.ubuntu.com/ubuntu focal/restricted i386 Packages [8,112 B]
Get:17 http://gb.archive.ubuntu.com/ubuntu focal/restricted Translation-en [6,212 B]
Get:18 http://gb.archive.ubuntu.com/ubuntu focal/restricted Translation-en_GB [3,860 B]
Get:19 http://gb.archive.ubuntu.com/ubuntu focal/restricted amd64 c-n-f Metadata [392 B]
Get:20 http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 Packages [8,628 kB]
Get:21 http://security.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [24.3 kB]
Get:22 http://security.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [57.5 kB]
Get:23 http://gb.archive.ubuntu.com/ubuntu focal/universe i386 Packages [4,642 kB]
Get:24 http://gb.archive.ubuntu.com/ubuntu focal/universe Translation-en_GB [319 kB]
Get:25 http://gb.archive.ubuntu.com/ubuntu focal/universe Translation-en [5,124 kB]
Get:26 http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 DEP-11 Metadata [3,603 kB]
Get:27 http://gb.archive.ubuntu.com/ubuntu focal/universe DEP-11 48x48 Icons [3,016 kB]
Get:28 http://gb.archive.ubuntu.com/ubuntu focal/universe DEP-11 64x64 Icons [7,794 kB]
Get:29 http://gb.archive.ubuntu.com/ubuntu focal/universe amd64 c-n-f Metadata [265 kB]
Get:30 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [804 kB]
Get:31 http://gb.archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [417 kB]
Get:32 http://gb.archive.ubuntu.com/ubuntu focal-updates/main Translation-en [194 kB]
Get:33 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [264 kB]
Get:34 http://gb.archive.ubuntu.com/ubuntu focal-updates/main DEP-11 48x48 Icons [55.6 kB]
Get:35 http://gb.archive.ubuntu.com/ubuntu focal-updates/main DEP-11 64x64 Icons [87.9 kB]
Get:36 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 c-n-f Metadata [11.7 kB]
Get:37 http://gb.archive.ubuntu.com/ubuntu focal-updates/restricted i386 Packages [16.2 kB]
Get:38 http://gb.archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [146 kB]
Get:39 http://gb.archive.ubuntu.com/ubuntu focal-updates/restricted Translation-en [21.9 kB]
Get:40 http://gb.archive.ubuntu.com/ubuntu focal-updates/restricted amd64 c-n-f Metadata [436 B]
Get:41 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [301 kB]
Get:42 http://gb.archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 DEP-11 Metadata [2,464 B]
Get:43 http://gb.archive.ubuntu.com/ubuntu focal-backports/universe amd64 DEP-11 Metadata [1,768 B]
Fetched 39.6 MB in 10s (4,017 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
117 packages can be upgraded. Run 'apt list --upgradable' to see them.
roger@roger-Lite:~$ apt list --upgradable
Listing... Done
apt-utils/focal-updates 2.0.4 amd64 [upgradable from: 2.0.2ubuntu0.2]
apt/focal-updates 2.0.4 amd64 [upgradable from: 2.0.2ubuntu0.2]
base-files/focal-updates 11ubuntu5.3 amd64 [upgradable from: 11ubuntu5.2]
calibre-bin/focal-updates 4.99.4+dfsg+really4.12.0-1ubuntu1 amd64 [upgradable from: 4.99.4+dfsg+really4.12.0-1build1]
calibre/focal-updates,focal-updates 4.99.4+dfsg+really4.12.0-1ubuntu1 all [upgradable from: 4.99.4+dfsg+really4.12.0-1build1]
cinnamon-common/focal-updates,focal-updates 4.4.8-4ubuntu0.1 all [upgradable from: 4.4.8-4]
cinnamon/focal-updates 4.4.8-4ubuntu0.1 amd64 [upgradable from: 4.4.8-4]
gdm3/focal-updates 3.36.3-0ubuntu0.20.04.3 amd64 [upgradable from: 3.36.3-0ubuntu0.20.04.2]
gir1.2-gdm-1.0/focal-updates 3.36.3-0ubuntu0.20.04.3 amd64 [upgradable from: 3.36.3-0ubuntu0.20.04.2]
gir1.2-gnomedesktop-3.0/focal-updates 3.36.8-0ubuntu1 amd64 [upgradable from: 3.36.3.1-0ubuntu1]
gir1.2-mutter-6/focal-updates 3.36.7+git20201123-0.20.04.1 amd64 [upgradable from: 3.36.6-1ubuntu0.20.04.2]
gir1.2-rsvg-2.0/focal-updates 2.48.9-1ubuntu0.20.04.1 amd64 [upgradable from: 2.48.7-1ubuntu0.20.04.1]
gnome-control-center-data/focal-updates,focal-updates 1:3.36.5-0ubuntu1 all [upgradable from: 1:3.36.4-0ubuntu2]
gnome-control-center-faces/focal-updates,focal-updates 1:3.36.5-0ubuntu1 all [upgradable from: 1:3.36.4-0ubuntu2]
gnome-control-center/focal-updates 1:3.36.5-0ubuntu1 amd64 [upgradable from: 1:3.36.4-0ubuntu2]
gnome-desktop3-data/focal-updates,focal-updates 3.36.8-0ubuntu1 all [upgradable from: 3.36.3.1-0ubuntu1]
gnome-shell-extension-appindicator/focal-updates,focal-updates 33.1-0ubuntu0.20.04.1 all [upgradable from: 33-1]
gnome-system-monitor/focal-updates 3.36.1-0ubuntu0.20.04.1 amd64 [upgradable from: 3.36.0-1]
google-chrome-stable/stable 88.0.4324.150-1 amd64 [upgradable from: 87.0.4280.88-1]
grub-common/focal-updates 2.04-1ubuntu26.8 amd64 [upgradable from: 2.04-1ubuntu26.7]
grub-efi-amd64-bin/focal-updates 2.04-1ubuntu26.8 amd64 [upgradable from: 2.04-1ubuntu26.7]
grub-efi-amd64-signed/focal-updates 1.142.10+2.04-1ubuntu26.8 amd64 [upgradable from: 1.142.9+2.04-1ubuntu26.7]
grub-efi-amd64/focal-updates 2.04-1ubuntu26.8 amd64 [upgradable from: 2.04-1ubuntu26.7]
grub2-common/focal-updates 2.04-1ubuntu26.8 amd64 [upgradable from: 2.04-1ubuntu26.7]
language-pack-en-base/focal-updates,focal-updates 1:20.04+20210121 all [upgradable from: 1:20.04+20200709]
language-pack-en/focal-updates,focal-updates 1:20.04+20210121 all [upgradable from: 1:20.04+20200709]
language-pack-gnome-en-base/focal-updates,focal-updates 1:20.04+20210121 all [upgradable from: 1:20.04+20200709]
language-pack-gnome-en/focal-updates,focal-updates 1:20.04+20210121 all [upgradable from: 1:20.04+20200709]
libapt-pkg6.0/focal-updates 2.0.4 amd64 [upgradable from: 2.0.2ubuntu0.2]
libasound2-data/focal-updates,focal-updates 1.2.2-2.1ubuntu2.3 all [upgradable from: 1.2.2-2.1ubuntu2.2]
libasound2/focal-updates 1.2.2-2.1ubuntu2.3 amd64 [upgradable from: 1.2.2-2.1ubuntu2.2]
libatopology2/focal-updates 1.2.2-2.1ubuntu2.3 amd64 [upgradable from: 1.2.2-2.1ubuntu2.2]
libc-bin/focal-updates 2.31-0ubuntu9.2 amd64 [upgradable from: 2.31-0ubuntu9.1]
libc-dev-bin/focal-updates 2.31-0ubuntu9.2 amd64 [upgradable from: 2.31-0ubuntu9.1]
libc6-dbg/focal-updates 2.31-0ubuntu9.2 amd64 [upgradable from: 2.31-0ubuntu9.1]
libc6-dev/focal-updates 2.31-0ubuntu9.2 amd64 [upgradable from: 2.31-0ubuntu9.1]
libc6/focal-updates 2.31-0ubuntu9.2 amd64 [upgradable from: 2.31-0ubuntu9.1]
libdrm-amdgpu1/focal-updates 2.4.102-1ubuntu1~20.04.1 amd64 [upgradable from: 2.4.101-2]
libdrm-common/focal-updates,focal-updates 2.4.102-1ubuntu1~20.04.1 all [upgradable from: 2.4.101-2]
libdrm-intel1/focal-updates 2.4.102-1ubuntu1~20.04.1 amd64 [upgradable from: 2.4.101-2]
libdrm-nouveau2/focal-updates 2.4.102-1ubuntu1~20.04.1 amd64 [upgradable from: 2.4.101-2]
libdrm-radeon1/focal-updates 2.4.102-1ubuntu1~20.04.1 amd64 [upgradable from: 2.4.101-2]
libdrm2/focal-updates 2.4.102-1ubuntu1~20.04.1 amd64 [upgradable from: 2.4.101-2]
libegl-mesa0/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libegl1-mesa/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libegl1/focal-updates 1.3.2-1~ubuntu0.20.04.1 amd64 [upgradable from: 1.3.1-1ubuntu0.20.04.1]
libevdev2/focal-updates 1.9.0+dfsg-1ubuntu0.1 amd64 [upgradable from: 1.9.0+dfsg-1]
libfprint-2-2/focal-updates 1:1.90.2+tod1-0ubuntu1~20.04.4 amd64 [upgradable from: 1:1.90.2+tod1-0ubuntu1~20.04.2]
libgbm1/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libgdm1/focal-updates 3.36.3-0ubuntu0.20.04.3 amd64 [upgradable from: 3.36.3-0ubuntu0.20.04.2]
libgl1-mesa-dri/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libgl1-mesa-glx/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libgl1/focal-updates 1.3.2-1~ubuntu0.20.04.1 amd64 [upgradable from: 1.3.1-1ubuntu0.20.04.1]
libglapi-mesa/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libgles2-mesa/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libgles2/focal-updates 1.3.2-1~ubuntu0.20.04.1 amd64 [upgradable from: 1.3.1-1ubuntu0.20.04.1]
libglib2.0-0/focal-updates 2.64.6-1~ubuntu20.04.1 amd64 [upgradable from: 2.64.3-1~ubuntu20.04.1]
libglib2.0-bin/focal-updates 2.64.6-1~ubuntu20.04.1 amd64 [upgradable from: 2.64.3-1~ubuntu20.04.1]
libglib2.0-data/focal-updates,focal-updates 2.64.6-1~ubuntu20.04.1 all [upgradable from: 2.64.3-1~ubuntu20.04.1]
libglvnd0/focal-updates 1.3.2-1~ubuntu0.20.04.1 amd64 [upgradable from: 1.3.1-1ubuntu0.20.04.1]
libglx-mesa0/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libglx0/focal-updates 1.3.2-1~ubuntu0.20.04.1 amd64 [upgradable from: 1.3.1-1ubuntu0.20.04.1]
libgnome-desktop-3-19/focal-updates 3.36.8-0ubuntu1 amd64 [upgradable from: 3.36.3.1-0ubuntu1]
libinput-bin/focal-updates 1.15.5-1ubuntu0.2 amd64 [upgradable from: 1.15.5-1ubuntu0.1]
libinput10/focal-updates 1.15.5-1ubuntu0.2 amd64 [upgradable from: 1.15.5-1ubuntu0.1]
libmutter-6-0/focal-updates 3.36.7+git20201123-0.20.04.1 amd64 [upgradable from: 3.36.6-1ubuntu0.20.04.2]
libnetplan0/focal-updates 0.101-0ubuntu3~20.04.2 amd64 [upgradable from: 0.100-0ubuntu4~20.04.3]
libnss-myhostname/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
libnss-systemd/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
libpam-systemd/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
libparted-fs-resize0/focal-updates 3.3-4ubuntu0.20.04.1 amd64 [upgradable from: 3.3-4]
libparted2/focal-updates 3.3-4ubuntu0.20.04.1 amd64 [upgradable from: 3.3-4]
libpulse-mainloop-glib0/focal-updates 1:13.99.1-1ubuntu3.10 amd64 [upgradable from: 1:13.99.1-1ubuntu3.8]
libpulse0/focal-updates 1:13.99.1-1ubuntu3.10 amd64 [upgradable from: 1:13.99.1-1ubuntu3.8]
libpulsedsp/focal-updates 1:13.99.1-1ubuntu3.10 amd64 [upgradable from: 1:13.99.1-1ubuntu3.8]
librsvg2-2/focal-updates 2.48.9-1ubuntu0.20.04.1 amd64 [upgradable from: 2.48.7-1ubuntu0.20.04.1]
librsvg2-common/focal-updates 2.48.9-1ubuntu0.20.04.1 amd64 [upgradable from: 2.48.7-1ubuntu0.20.04.1]
libsystemd0/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
libtracker-control-2.0-0/focal-updates 2.3.6-0ubuntu1 amd64 [upgradable from: 2.3.4-1]
libtracker-miner-2.0-0/focal-updates 2.3.6-0ubuntu1 amd64 [upgradable from: 2.3.4-1]
libtracker-sparql-2.0-0/focal-updates 2.3.6-0ubuntu1 amd64 [upgradable from: 2.3.4-1]
libudev1/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
libwayland-egl1-mesa/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
libwhoopsie0/focal-updates 0.2.69ubuntu0.2 amd64 [upgradable from: 0.2.69ubuntu0.1]
libxatracker2/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
linux-firmware/focal-updates,focal-updates 1.187.9 all [upgradable from: 1.187.4]
locales/focal-updates,focal-updates 2.31-0ubuntu9.2 all [upgradable from: 2.31-0ubuntu9.1]
lshw/focal-updates 02.18.85-0.3ubuntu2.20.04.1 amd64 [upgradable from: 02.18.85-0.3ubuntu2]
lsof/focal-updates 4.93.2+dfsg-1ubuntu0.20.04.1 amd64 [upgradable from: 4.93.2+dfsg-1]
mesa-va-drivers/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
mesa-vdpau-drivers/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
mesa-vulkan-drivers/focal-updates 20.2.6-0ubuntu0.20.04.1 amd64 [upgradable from: 20.0.8-0ubuntu1~20.04.1]
mutter-common/focal-updates,focal-updates 3.36.7+git20201123-0.20.04.1 all [upgradable from: 3.36.6-1ubuntu0.20.04.2]
mutter/focal-updates 3.36.7+git20201123-0.20.04.1 amd64 [upgradable from: 3.36.6-1ubuntu0.20.04.2]
nautilus-sendto/focal-updates 3.8.6-3ubuntu0.20.04.1 amd64 [upgradable from: 3.8.6-3]
netplan.io/focal-updates 0.101-0ubuntu3~20.04.2 amd64 [upgradable from: 0.100-0ubuntu4~20.04.3]
parted/focal-updates 3.3-4ubuntu0.20.04.1 amd64 [upgradable from: 3.3-4]
pulseaudio-module-bluetooth/focal-updates 1:13.99.1-1ubuntu3.10 amd64 [upgradable from: 1:13.99.1-1ubuntu3.8]
pulseaudio-utils/focal-updates 1:13.99.1-1ubuntu3.10 amd64 [upgradable from: 1:13.99.1-1ubuntu3.8]
pulseaudio/focal-updates 1:13.99.1-1ubuntu3.10 amd64 [upgradable from: 1:13.99.1-1ubuntu3.8]
python-apt-common/focal-updates,focal-updates 2.0.0ubuntu0.20.04.4 all [upgradable from: 2.0.0ubuntu0.20.04.3]
python3-apt/focal-updates 2.0.0ubuntu0.20.04.4 amd64 [upgradable from: 2.0.0ubuntu0.20.04.3]
python3-distupgrade/focal-updates,focal-updates 1:20.04.30 all [upgradable from: 1:20.04.29]
python3-update-manager/focal-updates,focal-updates 1:20.04.10.5 all [upgradable from: 1:20.04.10.1]
systemd-sysv/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
systemd-timesyncd/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
systemd/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
tracker/focal-updates 2.3.6-0ubuntu1 amd64 [upgradable from: 2.3.4-1]
ubuntu-drivers-common/focal-updates 1:0.8.6.5~0.20.04.1 amd64 [upgradable from: 1:0.8.4~0.20.04.3]
ubuntu-release-upgrader-core/focal-updates,focal-updates 1:20.04.30 all [upgradable from: 1:20.04.29]
ubuntu-release-upgrader-gtk/focal-updates,focal-updates 1:20.04.30 all [upgradable from: 1:20.04.29]
udev/focal-updates 245.4-4ubuntu3.4 amd64 [upgradable from: 245.4-4ubuntu3.3]
update-manager-core/focal-updates,focal-updates 1:20.04.10.5 all [upgradable from: 1:20.04.10.1]
update-manager/focal-updates,focal-updates 1:20.04.10.5 all [upgradable from: 1:20.04.10.1]
update-notifier-common/focal-updates,focal-updates 3.192.30.5 all [upgradable from: 3.192.30]
update-notifier/focal-updates 3.192.30.5 amd64 [upgradable from: 3.192.30]
whoopsie/focal-updates 0.2.69ubuntu0.2 amd64 [upgradable from: 0.2.69ubuntu0.1]
roger@roger-Lite:~$

Manfred Hampl (m-hampl) said : #9

I do not see anything wrong any more. In my opinion the problem is solved, unless you still see something that does not work as expected.
I suggest that you either mark this question document as "solved", or provide more information about your problem.

Roger Stanley Jarvis (rsj102) said : #10

Manfred

Thank you very much for your most helpful guidance.  It was issues
around updating software which initially provoked my queries, and they
all now seem to have been rectified.  There was one other issue which
appeared after upgrading from 17.10 to 20.04: the integrated camera (in
the laptop lid), can no longer be found by software which used it
previously (Zoom, Skype, Cheese); if there is a message it simply says,
'no camera available'.  Should I close this question and start another,
or is it more likely something I need to take up with the laptop's
maker/supplier?

Glad of your comment before I mark this question solved.

Roger

On 14/02/2021 18:41, Manfred Hampl wrote:
> Your question #695507 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/695507
>
> Manfred Hampl proposed the following answer:
> I do not see anything wrong any more. In my opinion the problem is solved, unless you still see something that does not work as expected.
> I suggest that you either mark this question document as "solved", or provide more information about your problem.
>

Best Manfred Hampl (m-hampl) said : #11

This question document was about problems with the package management system. You should not add a different problem (with the camera) to it, but create a new question about that other issue.

Before asking the laptop's supplier there are some checks that you could do. So I suggest that you create a new question document.

Roger Stanley Jarvis (rsj102) said : #12

Thanks Manfred Hampl, that solved my question.