how to reinstall network-manager from Ubuntu ISO

Did you try: sudo start network-manager

Another potentially helpful command:

sudo apt install --reinstall --no-download libnm0 network-manager

To Bernard: sudo start network-manager
...returns: sudo start command not found

To Manfred: sudo apt install --reinstall --no-download libnm0 network-manager
...returns: invalid operation install --reinstall --no-download

Thanks for your time and good intention, the original question remains unanswered.

To Manfred: I am sorry, my bad (I skipped a space), you are right:
...returns: Reading package lists... Done
                    Building dependency tree... Done
                    Reading state information... Done
                    The following packages were automatically installed and are no longer required:
                    dctrl-tools dkms libappstream-glib8 libflashrom1 libftdi1-2
                    libmalcontent-0-0 libostree-1-1
                    Use 'sudo apt autoremove' to remove them.
                    E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

(My excuse: I have to go with your answers to my computer to try them an come back to tell you)

If my command did not work, then let me start with an explanation.

There are a handful of different packages related to network-manager that depend on each other, and which have to be exactly the same version number.

On the initial Ubuntu 22.04 ISO there was version 1.36.4-2ubuntu1, but due to some bugs, theny meanwhile have been superseded by version 1.36.6-0ubuntu2. If you want to use the installer ISO file to reinstall the network-manager packages, then this is not trivial, because the ISO file most probably does not contain the same version as the one currently installed on your system.

It even seems to me that the ISO file does not contain installable *.deb packages for network-manager, but only single files spread among different directories.

My idea (which unfortunately did not work) was using the *.deb packages that may already be available in cache directories on your broken system. Apparently they aren't there any more.

In any case, I have some doubts that reinstalling the network-management packages will really help, because that is just replacing the files with identical files again.

I think that it would be better to try finding out, what there is happening on your system, what is causing that the network does no more work.

Let's start with diagostics:

1. What kind of computer (desktop, laptop, make and model) is it?
2. What kind of network connection do you intend to use - cable, WLAN, GSM-stick, ...?

To Manfred: Thank you very much for your clear explanation. In fact, that answers my question and I know now that even it is possible to reinstall the network-manager from the original ISO after lots of work, it really doesn't worth because it will not match the actual status of my system. OK, I will forget about it and look for another solution.

Now about your questions:
1: Laptop ASUS TUF GAMING, Intel Core i5-9300H
2: Wifi, from home router provided by local cable company.

I think the way to go now will be uninstalling whatever network-manager (or its remains) is still in my system and installing another from a package, Easy to say, but which, and how. Keeping the package in a safe place will be a quick restore help if anything happens again.

1. Do you have the possibility to connect the laptop to the router via a LAN cable? Maybe that offers a temporary connection that can be used to repair the WLAN connection.

2. Execute the command
sudo lshw -C network
and check the output (no need to retype it in full).

How many network devices are listed?
Can you identify one of them as the WLAN device?
What is shown for its type and manufacturer?
Is there somewhere the string "driver=", and what is shown there?
Is there an IP address shown in the output?

To Manfred:
1: Not at all, I tried with Ethernet cable but the laptop totally ignored it.
2:
$ nmcli device show
GENERAL.DEVICE: enp2s0
GENERAL.TYPE: ethernet
GENERAL.HWADDR: 04:D4:C4:E3:3C:39
GENERAL.MTU: 1500
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: off
IP4.GATEWAY: --
IP6.GATEWAY: --

GENERAL.DEVICE: lo
GENERAL.TYPE: loopback
GENERAL.HWADDR: 00:00:00:00:00:00
GENERAL.MTU: 65536
GENERAL.STATE: 10 (unmanaged)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
IP4.ADDRESS[1]: 127.0.0.1/8
IP4.GATEWAY: --
IP6.ADDRESS[1]: ::1/128
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = ::1/128, nh = ::, mt = 256

$ nmcli con show
NAME UUID TYPE DEVICE
D29EBC 17dcf6db-75ce-47a2-a9c0-1fb181e991bc wifi --
D29EBC 1 b1bbee0f-6561-40e7-92d6-d60967a3c393 wifi --
D29EBD 514c4fbe-98f8-4925-a2be-78a6c77efb52 wifi --
nl-free-128.proto nvpn.net.tcp e4f53c01-9047-436d-8c70-b2cf2a5bd22c vpn --
TEST NETWORK 30948711-c3f7-4979-9f31-6774988e4888 wifi --
VERNELL 2GWIFI 5879c0fc-9113-4a45-aff2-79c9d15f4343 wifi --
VERNELL 5GWIFI 9c5a1f4e-e4c5-42a2-8f77-80fa80a8e00e wifi --
VERNELL 5GWIFI 8aa4a726-1cb2-433f-9c5f-814e05f332dc wifi --

$ ls /etc/netplan
01-network-manager-all.yaml

If you connect a LAN cable and re-issue the "nmcli device show" command, does it show an IP address for the device enp2s0?

Unfortunately no. The result is always the same as shown, I tried with several cables, just in case.

May I ask you if the 01-network-manager-all.yaml is the adequate for my laptop?
A big doubt is growing in my mind.

I owe you this information about lshw -C network

*-network
       description: Network controller
       product: Cannon Lake PCH CNVi WiFi
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       version: 10
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list
       configuration: driver=iwlwifi latency=0
       resources: irq:16 memory:a43a4000-a43a7fff
  *-network DISABLED
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0
       version: 15
       serial: 04:d4:c4:e3:3c:39
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=r8169 driverversion=5.17.0-1020-oem latency=0 link=no multicast=yes
       resources: irq:16 ioport:3000(size=256) memory:a4204000-a4204fff memory:a4200000-a4203fff

What happens if you open a terminal winow and issue the commands

sudo modprobe -rf iwlwifi
sudo modprobe -v iwlwifi

Which messages do you get in the terminal window?
Does networking start working?

$ sudo modprobe -rf iwlwifi
rmmod: ERROR: missing module name.
modprobe: FATAL: Error running remove command for iwlwifi

$ sudo modprobe -v iwlwifi
insmod /lib/modules/5.17.0-1020-oem/kernel/net/wireless/cfg80211.ko
insmod /lib/modules/5.17.0-1020-oem/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko

To Manfred:
I am so sorry for disturbing your time, It was my fault from the beginning: I installed the wrong package and that made my system do crazy things. You help me though guiding me to find my mistake. Thank you. I only hope that you also gain something from this experience.

Now I am going to declare this problem solved... for now.

Although I understand that using the Ubuntu ISO to solve a network problem is worthless, I am still unable to access the Internet, so I continue to look for solutions. Maybe I have to ask another question, like:

Is it possible to make a package that gives at least a minimun access, like through Ethernet cable, just to be able to get the resources needed to solve this kind of problem. I say this, because I tried to install the network manager package saving it into /var/cache/apt/archives/ but the apt try to go anyway to the internet to look for the package. When I succesfully made the apt to fetch the downloaded package, it still tried to acces the internet looking for the dependecies. Obviously it ends with errors all the time.

My last but one alternative is to reinstall Ubuntu itself, and the very last, that I don't want to take, is returning to Windows.

I accept any suggestion that doesn't talk about me needing to access the Internet in the first place, as most the answers I have checked do.

The key problem is that we still do not know, why your internet connection fails.

For collecting diagnostic information, the easiest way is using a cable connection and running the WLAN troubleshooting procedure.

For your attempt to copy the network manager deb file to /var/cache/apt/archives/:
The command that I gave earlier (sudo apt install --reinstall --no-download libnm0 network-manager) is supposed not to look at the internet for updates. Which command did you try?

If you are sure that you have the correct deb files already downloaded, then you can install them with dpkg and not with apt.

The commands to be executed have to be something like
cd /var/cache/apt/archives/
sudo dpkg -i libnm0_1.36.6-0ubuntu2_amd64.deb network-manager_1.36.6-0ubuntu2_amd64.deb

Still I doubt that the problem can be solved by reinstalling the software. I much more believe that there is something wrong in your configuration.
There are several reports on the web where people complain that networking failed because of certain vpn solutions that they installed. From your output I assume that you have ProtonVPN installed. Have you tried disabling it?

In your comment #14 you wrote something about "wrong package". What exactly do you think that you did wrong?

Good news and also concerning news.

I am running full internet in my laptop. How? I restored several times with TimeShift until found a 3 month old that made the miracle of starting with internet on! Of course I lost a lot of programs installed after that date, even old ones like Thunderbird that I had to reinstall.

The concerning news is that I copy/paste your
cd /var/cache/apt/archives/
sudo dpkg -i libnm0_1.36.6-0ubuntu2_amd64.deb network-manager_1.36.6-0ubuntu2_amd64.deb
to Text Editor (and now into this comment) with no problem. BUT when I try to do the same thing in LibreOffice Writer the paste gave me
cd /var/cache/
sudo dpkg -i libnm0_
And cannot even complete it writing myself! I can do copy/paste with any other text, but not with that couple of lines.
Does it mean that LibreOffice is contaminated?

Anyway, about the Internet thing:
Now I am having it running immediately before the problem happened, so the conditions to happen again are present somehow. How to prevent it? I am sure you now how to guide me into investigating the health of the situation.

The problem which you describe about copy/paste in LibreOffice Writer is inexplicable to me.
Eventually LibreOffice Writer interprets your data as part of a table.

The "standard" way of diagnostics for WLAN problems is connecting the system to the internet (with whatever means) and running https://help.ubuntu.com/community/WirelessTroubleshootingProcedure
If you now have network connection, then please execute the command in step 2 and paste all output into this question document. That information should come in handy in case of another failure in future.

I copy/paste the command in step 2 in the terminal, as you suggested.
It started to work showing several lines in the terminal... and suddenly it stopped with a message covering the terminal saying:
"
Configuring debian-security-support.
Limited security support for one or more packages
Unfortunately, it has been necessary to limit security support for some packages.
The following packages found on this system are affected by this:

* Source:binutils
"
After that, the message got stuck and I could not see the terminal writings anymore.
Maybe I should leave the terminal open for even more time, in spite of the message...
I am going to try again, if something else happens I will posted.

All right, this time the message did not come and the process gave this answer:

Ign:1 cdrom://Ubuntu 22.04 LTS _Jammy Jellyfish_ - Release amd64 (20220419) jammy InRelease
Err:2 cdrom://Ubuntu 22.04 LTS _Jammy Jellyfish_ - Release amd64 (20220419) jammy Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Hit:3 http://mirror.us-ny2.kamatera.com/ubuntu jammy InRelease
Hit:4 https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit:5 http://mirror.us-ny2.kamatera.com/ubuntu jammy-updates InRelease
Hit:6 http://mirror.us-ny2.kamatera.com/ubuntu jammy-backports InRelease
Hit:7 http://mirror.us-ny2.kamatera.com/ubuntu jammy-security InRelease
Err:8 https://ppa.launchpadcontent.net/kritalime/ppa/ubuntu jammy InRelease
  403 Forbidden [IP: 185.125.190.52 443]
Ign:9 https://ppa.launchpadcontent.net/mc3man/mpv-tests/ubuntu jammy InRelease
Hit:10 https://ppa.launchpadcontent.net/stefansundin/truecrypt/ubuntu jammy InRelease
Err:11 https://ppa.launchpadcontent.net/mc3man/mpv-tests/ubuntu jammy Release
  404 Not Found [IP: 185.125.190.52 443]
Reading package lists... Done
E: The repository 'cdrom://Ubuntu 22.04 LTS _Jammy Jellyfish_ - Release amd64 (20220419) jammy Release' does not have a Release file.
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.
E: Failed to fetch https://ppa.launchpadcontent.net/kritalime/ppa/ubuntu/dists/jammy/InRelease 403 Forbidden [IP: 185.125.190.52 443]
E: The repository 'https://ppa.launchpadcontent.net/kritalime/ppa/ubuntu jammy 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.
E: The repository 'https://ppa.launchpadcontent.net/mc3man/mpv-tests/ubuntu jammy Release' does not have a Release file.
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.
E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 67641 (apt-get)
N: Be aware that removing the lock file is not a solution and may break your system.
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
  *-network
       description: Wireless interface
       product: Cannon Lake PCH CNVi WiFi
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlo1
       version: 10
       serial: 04:ed:33:56:f7:11
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.15.0-47-generic firmware=46.fae53a8b.0 9000-pu-b0-jf-b0- ip=192.168.0.2 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:16 memory:a43a4000-a43a7fff
  *-network DISABLED
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: enp2s0
       version: 15
       serial: 04:d4:c4:e3:3c:39
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=r8169 driverversion=5.15.0-47-generic latency=0 link=no multicast=yes
       resources: irq:16 ioport:3000(size=256) memory:a4204000-a4204fff memory:a4200000-a4203fff
0: hci0: Bluetooth
 Soft blocked: yes
 Hard blocked: no
1: phy1: Wireless LAN
 Soft blocked: no
 Hard blocked: no
lo Interface doesn't support scanning.

enp2s0 Interface doesn't support scanning.

                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    ESSID:"CF 2.4g"
                    Channel:36
                    Frequency:5.18 GHz (Channel 36)
                    ESSID:"D29EBD"
                    Channel:36
                    Frequency:5.18 GHz (Channel 36)
                    ESSID:"CF 5g"
                    Channel:157
                    ESSID:"VERNELL 5GWIFI"
cat: /etc/network/interfaces: No such file or directory
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=22.04
DISTRIB_CODENAME=jammy
DISTRIB_DESCRIPTION="Ubuntu 22.04.1 LTS"
00:14.3 Network controller [0280]: Intel Corporation Cannon Lake PCH CNVi WiFi [8086:a370] (rev 10)
 DeviceName: Onboard - Ethernet
 Subsystem: Intel Corporation Cannon Lake PCH CNVi WiFi [8086:02a4]
 Kernel driver in use: iwlwifi
--
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
 Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:208f]
 Kernel driver in use: r8169
 Kernel modules: r8169
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 001 Device 004: ID 8087:0aaa Intel Corp. Bluetooth 9460/9560 Jefferson Peak (JfP)
Bus 001 Device 003: ID 13d3:56a2 IMC Networks USB2.0 HD UVC WebCam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
STATE CONNECTIVITY WIFI-HW WIFI WWAN-HW WWAN
connected full enabled enabled enabled enabled
H/W path Device Class Description
========================================================
                              system TUF Gaming FX505GT_FX505GT
/0 bus FX505GT
/0/0 memory 64KiB BIOS
/0/3a memory 16GiB System Memory
/0/3a/0 memory 8GiB SODIMM DDR4 Synchronous 2667 M
/0/3a/1 memory [empty]
/0/3a/2 memory 8GiB SODIMM DDR4 Synchronous 2667 M
/0/3a/3 memory [empty]
/0/46 memory 256KiB L1 cache
/0/47 memory 1MiB L2 cache
/0/48 memory 8MiB L3 cache
/0/49 processor Intel(R) Core(TM) i5-9300H CPU @ 2.
/0/100 bridge 8th Gen Core 4-core Processor Host
/0/100/1 bridge 6th-10th Gen Core Processor PCIe Co
/0/100/1/0 display TU117M [GeForce GTX 1650 Mobile / M
/0/100/1/0.1 card0 multimedia NVIDIA Corporation
/0/100/1/0.1/0 input20 input HDA NVidia HDMI/DP,pcm=3
/0/100/1/0.1/1 input21 input HDA NVidia HDMI/DP,pcm=7
/0/100/1/0.1/2 input22 input HDA NVidia HDMI/DP,pcm=8
/0/100/1/0.1/3 input23 input HDA NVidia HDMI/DP,pcm=9
/0/100/2 /dev/fb0 display CoffeeLake-H GT2 [UHD Graphics 630]
/0/100/4 generic Xeon E3-1200 v5/E3-1500 v5/6th Gen
/0/100/8 generic Xeon E3-1200 v5/v6 / E3-1500 v5 / 6
/0/100/12 generic Cannon Lake PCH Thermal Controller
/0/100/14 bus Cannon Lake PCH USB 3.1 xHCI Host C
/0/100/14/0 usb1 bus xHCI Host Controller
/0/100/14/0/6 input10 input Microsoft Microsoft® Nano Transcei
/0/100/14/0/b multimedia USB2.0 HD UVC WebCam
/0/100/14/0/e communication Bluetooth 9460/9560 Jefferson Peak
/0/100/14/1 usb2 bus xHCI Host Controller
/0/100/14.2 memory RAM memory
/0/100/14.3 wlo1 network Cannon Lake PCH CNVi WiFi
/0/100/15 bus Cannon Lake PCH Serial IO I2C Contr
/0/100/16 communication Cannon Lake PCH HECI Controller
/0/100/17 scsi4 storage 82801 Mobile SATA Controller [RAID
/0/100/17/0.0.0 /dev/sda disk 1TB Samsung SSD 860
/0/100/17/0.0.0/1 /dev/sda1 volume 15MiB EFI partition
/0/100/17/0.0.0/2 /dev/sda2 volume 646GiB Windows NTFS volume
/0/100/17/0.0.0/3 /dev/sda3 volume 7812MiB Linux swap volume
/0/100/17/0.0.0/4 /dev/sda4 volume 190MiB Windows FAT volume
/0/100/17/0.0.0/5 /dev/sda5 volume 276GiB EXT4 volume
/0/100/1d bridge Cannon Lake PCH PCI Express Root Po
/0/100/1d/0 enp2s0 network RTL8111/8168/8411 PCI Express Gigab
/0/100/1e communication Cannon Lake PCH Serial IO UART Host
/0/100/1f bridge HM470 Chipset LPC/eSPI Controller
/0/100/1f/0 system PnP device PNP0c02
/0/100/1f/1 system PnP device PNP0c02
/0/100/1f/2 generic PnP device INT3f0d
/0/100/1f/3 system PnP device PNP0c02
/0/100/1f/4 system PnP device PNP0c02
/0/100/1f/5 system PnP device PNP0c02
/0/100/1f/6 system PnP device PNP0c02
/0/100/1f/7 input PnP device PNP0303
/0/100/1f.3 card1 multimedia Cannon Lake PCH cAVS
/0/100/1f.4 bus Cannon Lake PCH SMBus Controller
/0/100/1f.5 bus Cannon Lake PCH SPI Controller
/1 power To Be Filled By O.E.M.
/2 input0 input Sleep Button
/3 input1 input Power Button
/4 input15 input Asus Wireless Radio Control
/5 input16 input USB2.0 HD UVC WebCam: USB2.0 HD
/6 input17 input Asus WMI hotkeys
/7 input18 input ELAN1200:00 04F3:30BA Mouse
/8 input19 input ELAN1200:00 04F3:30BA Touchpad
/9 input2 input Lid Switch
/a input24 input sof-hda-dsp Front Headphone
/b input25 input sof-hda-dsp HDMI/DP,pcm=3
/c input26 input sof-hda-dsp HDMI/DP,pcm=4
/d input27 input sof-hda-dsp HDMI/DP,pcm=5
/e input3 input Power Button
/f input4 input AT Translated Set 2 keyboard
/10 input7 input Video Bus
/11 input8 input Video Bus
Linux armando-ASUS 5.15.0-47-generic #51-Ubuntu SMP Thu Aug 11 07:51:15 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
dmesg: read kernel buffer failed: Operation not permitted
 Release Date: 11/26/2020
  Serial services are supported (int 14h)
 Manufacturer: ASUSTeK COMPUTER INC.
 Product Name: TUF Gaming FX505GT_FX505GT
 Serial Number: K9NRCV02X05537D
 Manufacturer: ASUSTeK COMPUTER INC.
 Product Name: FX505GT
 Serial Number: K936NRCV000S49MB
 Manufacturer: ASUSTeK COMPUTER INC.
 Serial Number: K9NRCV02X05537D
 Port Type: Serial Port 16550A Compatible
 Manufacturer: To Be Filled By O.E.M.
 Serial Number: To Be Filled By O.E.M.
 Manufacturer: Intel(R) Corporation
 Serial Number: To Be Filled By O.E.M.
 Manufacturer: Samsung
 Serial Number: 32C9BBB3
 Module Manufacturer ID: Bank 1, Hex 0xCE
 Module Product ID: Unknown
 Memory Subsystem Controller Manufacturer ID: Unknown
 Memory Subsystem Controller Product ID: Unknown
 Manufacturer: Not Specified
 Serial Number: Not Specified
 Module Manufacturer ID: Unknown
 Module Product ID: Unknown
 Memory Subsystem Controller Manufacturer ID: Unknown
 Memory Subsystem Controller Product ID: Unknown
 Manufacturer: 0000
 Serial Number: 010409BC
 Module Manufacturer ID: Unknown
 Module Product ID: Unknown
 Memory Subsystem Controller Manufacturer ID: Unknown
 Memory Subsystem Controller Product ID: Unknown
 Manufacturer: Not Specified
 Serial Number: Not Specified
 Module Manufacturer ID: Unknown
 Module Product ID: Unknown
 Memory Subsystem Controller Manufacturer ID: Unknown
 Memory Subsystem Controller Product ID: Unknown
  Debug Use USB(Disabled:Serial)
lo no wireless extensions.

enp2s0 no wireless extensions.

wlo1 IEEE 802.11 ESSID:"VERNELL 5GWIFI"
          Mode:Managed Frequency:5.785 GHz Access Point: 58:19:F8:F0:05:FC
          Bit Rate=433.3 Mb/s Tx-Power=22 dBm
          Retry short limit:7 RTS thr:off Fragment thr:off
          Power Management:on
          Link Quality=63/70 Signal level=-47 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:88 Missed beacon:0

/etc/modprobe.d/alsa-base.conf:install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; : ; }
/etc/modprobe.d/blacklist-ath_pci.conf:# which ath5k cannot recover. To prevent this condition, stop
/etc/modprobe.d/blacklist-ath_pci.conf:blacklist ath_pci
/etc/modprobe.d/blacklist.conf:blacklist eth1394
/etc/modprobe.d/blacklist.conf:# replaced by p54pci
/etc/modprobe.d/blacklist.conf:blacklist prism54
/etc/modprobe.d/blacklist.conf:# replaced by b43 and ssb.
/etc/modprobe.d/blacklist.conf:blacklist bcm43xx
/etc/modprobe.d/blacklist-oss.conf:blacklist uart6850
/etc/modprobe.d/iwlwifi.conf:# /etc/modprobe.d/iwlwifi.conf
/etc/modprobe.d/iwlwifi.conf:# iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
/etc/modprobe.d/iwlwifi.conf:# microcode file installed on the system. When removing iwlwifi, first
/etc/modprobe.d/iwlwifi.conf:# remove the iwl?vm module and then iwlwifi.
/etc/modprobe.d/iwlwifi.conf:remove iwlwifi \
/etc/modprobe.d/iwlwifi.conf:(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
/etc/modprobe.d/iwlwifi.conf:&& /sbin/modprobe -r mac80211
cat: /var/lib/NetworkManager/NetworkManager.state: Permission denied
10: PCI 200.0: 0200 Ethernet controller
  [Created at pci.386]
  Unique ID: c3qJ.g1yJ3amPfwB
  Parent ID: 1GTX.XPPxeIgU3d4
  SysFS ID: /devices/pci0000:00/0000:00:1d.0/0000:02:00.0
  SysFS BusID: 0000:02:00.0
  Hardware Class: network
  Model: "Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller"
  Vendor: pci 0x10ec "Realtek Semiconductor Co., Ltd."
  Device: pci 0x8168 "RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller"
  SubVendor: pci 0x1043 "ASUSTeK Computer Inc."
  SubDevice: pci 0x208f
  Revision: 0x15
  Driver: "r8169"
  Driver Modules: "r8169"
  Device File: enp2s0
  I/O Ports: 0x3000-0x3fff (rw)
  Memory Range: 0xa4204000-0xa4204fff (rw,non-prefetchable)
  Memory Range: 0xa4200000-0xa4203fff (rw,non-prefetchable)
  IRQ: 16 (2442243 events)
  HW Address: 04:d4:c4:e3:3c:39
  Permanent HW Address: 04:d4:c4:e3:3c:39
  Link detected: no
  Module Alias: "pci:v000010ECd00008168sv00001043sd0000208Fbc02sc00i00"
  Driver Info #0:
    Driver Status: r8169 is active
    Driver Activation Cmd: "modprobe r8169"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #22 (PCI bridge)

13: PCI 14.3: 0282 WLAN controller
  [Created at pci.386]
  Unique ID: S6TQ.b1yzsR52Oo8
  SysFS ID: /devices/pci0000:00/0000:00:14.3
  SysFS BusID: 0000:00:14.3
  Hardware Class: network
  Device Name: "Onboard - Ethernet"
  Model: "Intel Wireless-AC 9560 [Jefferson Peak]"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0xa370 "Wireless-AC 9560 [Jefferson Peak]"
  SubVendor: pci 0x8086 "Intel Corporation"
  SubDevice: pci 0x02a4
  Revision: 0x10
  Driver: "iwlwifi"
  Driver Modules: "iwlwifi"
  Device File: wlo1
  Features: WLAN
  Memory Range: 0xa43a4000-0xa43a7fff (rw,non-prefetchable)
  IRQ: 16 (2442243 events)
  HW Address: 04:ed:33:56:f7:11
  Permanent HW Address: 04:ed:33:56:f7:11
  Link detected: yes
  WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 144 149
  WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 2.462 5.18 5.2 5.22 5.24 5.26 5.28 5.3 5.32 5.5 5.52 5.54 5.56 5.58 5.6 5.62 5.64 5.66 5.68 5.7 5.72 5.745
  WLAN encryption modes: WEP40 WEP104 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Module Alias: "pci:v00008086d0000A370sv00008086sd000002A4bc02sc80i00"
  Driver Info #0:
    Driver Status: iwlwifi is active
    Driver Activation Cmd: "modprobe iwlwifi"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
root 879 0.0 0.1 43756 20060 ? Ss 06:36 0:00 /usr/bin/python3 /usr/bin/networkd-dispatcher --run-startup-triggers
root 901 0.0 0.0 17688 10888 ? Ss 06:36 0:00 /sbin/wpa_supplicant -u -s -O /run/wpa_supplicant
root 1194 0.0 0.1 263744 19164 ? Ssl 06:37 0:06 /usr/sbin/NetworkManager --no-daemon
armando 56274 0.0 0.0 317640 8532 ? Sl 09:24 0:00 /usr/libexec/gvfsd-network --spawner :1.2 /org/gtk/gvfs/exec_spaw/1
armando 70941 0.0 0.0 11824 2304 pts/3 S+ 15:29 0:00 grep --color=auto -E wpa|icd|etwork
Command 'netstat' not found, but can be installed with:
sudo apt install net-tools
# This is /run/systemd/resolve/stub-resolv.conf managed by man:systemd-resolved(8).
# Do not edit.
#
# This file might be symlinked as /etc/resolv.conf. If you're looking at
# /etc/resolv.conf and seeing this text, you have followed the symlink.
#
# This is a dynamic resolv.conf file for connecting local clients to the
# internal DNS stub resolver of systemd-resolved. This file lists all
# configured search domains.
#
# Run "resolvectl status" to see details about the uplink DNS servers
# currently in use.
#
# Third party programs should typically not access this file directly, but only
# through the symlink at /etc/resolv.conf. To manage man:resolv.conf(5) in a
# different way, replace this symlink by a static file or a different symlink.
#
# See man:systemd-resolved.service(8) for details about the supported modes of
# operation for /etc/resolv.conf.

nameserver 127.0.0.53
options edns0 trust-ad
search .
total 242253
11010049 drwxr-xr-x 4 root root 4096 Nov 25 07:55 .
       2 drwxr-xr-x 21 root root 4096 Sep 5 15:47 ..
11014025 -rw-r--r-- 1 root root 261841 Aug 10 03:49 config-5.15.0-47-generic
11010055 -rw-r--r-- 1 root root 261837 Oct 17 14:36 config-5.15.0-53-generic
       1 drwx------ 4 root root 512 Dec 31 1969 efi
11010051 drwxr-xr-x 5 root root 4096 Nov 25 07:55 grub
11010053 lrwxrwxrwx 1 root root 28 Nov 25 07:47 initrd.img -> initrd.img-5.15.0-53-generic
11010251 -rw-r--r-- 1 root root 105661284 Sep 15 06:51 initrd.img-5.15.0-47-generic
11010070 -rw-r--r-- 1 root root 105715360 Nov 25 07:53 initrd.img-5.15.0-53-generic
11010067 lrwxrwxrwx 1 root root 28 Nov 25 07:47 initrd.img.old -> initrd.img-5.15.0-47-generic
11010056 -rw-r--r-- 1 root root 182800 Feb 6 2022 memtest86+.bin
11010057 -rw-r--r-- 1 root root 184476 Feb 6 2022 memtest86+.elf
11010058 -rw-r--r-- 1 root root 184980 Feb 6 2022 memtest86+_multiboot.bin
11012043 -rw------- 1 root root 6245466 Aug 10 03:49 System.map-5.15.0-47-generic
11010052 -rw------- 1 root root 6250186 Oct 17 14:36 System.map-5.15.0-53-generic
11010068 lrwxrwxrwx 1 root root 25 Nov 25 07:47 vmlinuz -> vmlinuz-5.15.0-53-generic
11014309 -rw------- 1 root root 11530816 Aug 11 03:44 vmlinuz-5.15.0-47-generic
11010059 -rw------- 1 root root 11548224 Oct 17 14:41 vmlinuz-5.15.0-53-generic
11010066 lrwxrwxrwx 1 root root 25 Nov 25 07:47 vmlinuz.old -> vmlinuz-5.15.0-47-generic
2602 packages installed, of which:
2023 receive package updates with LTS until 4/2027
   3 packages are from third parties
   1 package is no longer available for download

Packages from third parties are not provided by the official Ubuntu
archive, for example packages from Personal Package Archives in
Launchpad.
For more information on the packages, run 'ubuntu-security-status
--thirdparty'.

Packages that are not available for download may be left over from a
previous release of Ubuntu, may have been installed directly from a
.deb file, or are from a source which has been disabled.
For more information on the packages, run 'ubuntu-security-status
--unavailable'.
Limited security support for one or more packages

Unfortunately, it has been necessary to limit security support for some
packages.

The following packages found on this system are affected by this:

* Source:binutils
  Details: Only suitable for trusted content; see https://<email address hidden>
  Affected binary packages:
  - binutils (installed version: 2.38-4ubuntu2)
  - binutils-common:amd64 (installed version: 2.38-4ubuntu2)
  - binutils-x86-64-linux-gnu (installed version: 2.38-4ubuntu2)
  - libbinutils:amd64 (installed version: 2.38-4ubuntu2)
  - libctf-nobfd0:amd64 (installed version: 2.38-4ubuntu2)
  - libctf0:amd64 (installed version: 2.38-4ubuntu2)

* Source:qtwebkit-opensource-src
  Details: No security support upstream and backports not feasible, only for use on trusted content
  Affected binary package:
  - libqt5webkit5:amd64 (installed version: 5.212.0~alpha4-15ubuntu1)

  % Total % Received % Xferd Average Speed Time Time Time Current
                                 Dload Upload Total Spent Left Speed
100 283k 100 283k 0 0 81396 0 0:00:03 0:00:03 --:--:-- 81376
Done.
Module Size Used by
cpuid 16384 0
tls 114688 1
lkp_Ubuntu_5_15_0_47_51_generic_90 49152 1
ccm 20480 3
rfcomm 81920 4
ip6t_REJECT 16384 1
nf_reject_ipv6 20480 1 ip6t_REJECT
xt_hl 16384 22
ip6_tables 32768 52
ip6t_rt 20480 3
ipt_REJECT 16384 1
nf_reject_ipv4 16384 1 ipt_REJECT
xt_LOG 20480 10
nf_log_syslog 20480 10
nft_limit 16384 13
xt_limit 16384 0
xt_addrtype 16384 4
xt_tcpudp 20480 18
xt_conntrack 16384 16
nf_conntrack 172032 1 xt_conntrack
nf_defrag_ipv6 24576 1 nf_conntrack
nf_defrag_ipv4 16384 1 nf_conntrack
nft_compat 20480 135
nft_counter 16384 170
nvidia_uvm 1314816 0
cmac 16384 2
algif_hash 16384 1
algif_skcipher 16384 1
snd_soc_skl_hda_dsp 28672 6
af_alg 32768 6 algif_hash,algif_skcipher
snd_soc_intel_hda_dsp_common 20480 1 snd_soc_skl_hda_dsp
snd_soc_hdac_hdmi 36864 1 snd_soc_skl_hda_dsp
bnep 28672 2
snd_hda_codec_realtek 159744 1
snd_hda_codec_generic 102400 1 snd_hda_codec_realtek
snd_soc_dmic 16384 1
snd_sof_pci_intel_cnl 16384 0
snd_sof_intel_hda_common 102400 1 snd_sof_pci_intel_cnl
soundwire_intel 40960 1 snd_sof_intel_hda_common
soundwire_generic_allocation 16384 1 soundwire_intel
soundwire_cadence 36864 1 soundwire_intel
snd_sof_intel_hda 20480 1 snd_sof_intel_hda_common
nvidia_drm 73728 2
snd_sof_pci 20480 2 snd_sof_intel_hda_common,snd_sof_pci_intel_cnl
snd_sof_xtensa_dsp 16384 1 snd_sof_intel_hda_common
snd_sof 147456 2 snd_sof_pci,snd_sof_intel_hda_common
snd_soc_hdac_hda 24576 1 snd_sof_intel_hda_common
snd_hda_ext_core 32768 4 snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_soc_acpi_intel_match 61440 2 snd_sof_intel_hda_common,snd_sof_pci_intel_cnl
snd_soc_acpi 16384 2 snd_soc_acpi_intel_match,snd_sof_intel_hda_common
soundwire_bus 94208 3 soundwire_intel,soundwire_generic_allocation,soundwire_cadence
intel_tcc_cooling 16384 0
ledtrig_audio 16384 2 snd_hda_codec_generic,snd_sof
nf_tables 245760 389 nft_compat,nft_counter,nft_limit
x86_pkg_temp_thermal 20480 0
libcrc32c 16384 2 nf_conntrack,nf_tables
intel_powerclamp 20480 0
nfnetlink 20480 2 nft_compat,nf_tables
binfmt_misc 24576 1
nvidia_modeset 1146880 3 nvidia_drm
coretemp 24576 0
snd_soc_core 339968 7 soundwire_intel,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_dmic,snd_soc_skl_hda_dsp
nls_iso8859_1 16384 1
snd_compress 24576 1 snd_soc_core
snd_hda_codec_hdmi 77824 2
ac97_bus 16384 1 snd_soc_core
snd_pcm_dmaengine 16384 1 snd_soc_core
kvm_intel 372736 0
snd_hda_intel 53248 1
snd_intel_dspcfg 28672 2 snd_hda_intel,snd_sof_intel_hda_common
nvidia 40816640 108 nvidia_uvm,nvidia_modeset
mei_hdcp 24576 0
intel_rapl_msr 20480 0
iwlmvm 569344 0
snd_intel_sdw_acpi 20480 2 snd_sof_intel_hda_common,snd_intel_dspcfg
snd_hda_codec 163840 7 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_intel_hda_dsp_common,snd_soc_hdac_hda,snd_soc_skl_hda_dsp
kvm 1028096 1 kvm_intel
mac80211 1253376 1 iwlmvm
snd_seq_midi 20480 0
snd_hda_core 110592 11 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_soc_intel_hda_dsp_common,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
btusb 61440 0
rapl 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
uvcvideo 106496 0
intel_cstate 20480 0
snd_rawmidi 49152 1 snd_seq_midi
snd_hwdep 16384 1 snd_hda_codec
libarc4 16384 1 mac80211
btrtl 24576 1 btusb
videobuf2_vmalloc 20480 1 uvcvideo
snd_seq 77824 2 snd_seq_midi,snd_seq_midi_event
snd_pcm 143360 11 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,soundwire_intel,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_compress,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
btbcm 24576 1 btusb
videobuf2_memops 20480 1 videobuf2_vmalloc
videobuf2_v4l2 32768 1 uvcvideo
processor_thermal_device_pci_legacy 16384 0
btintel 40960 1 btusb
serio_raw 20480 0
processor_thermal_device 20480 1 processor_thermal_device_pci_legacy
asus_nb_wmi 28672 0
8250_dw 16384 0
wmi_bmof 16384 0
mxm_wmi 16384 0
bluetooth 704512 33 btrtl,btintel,btbcm,bnep,btusb,rfcomm
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
ee1004 20480 0
videobuf2_common 77824 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops
joydev 32768 0
processor_thermal_rfim 24576 1 processor_thermal_device
iwlwifi 450560 1 iwlmvm
input_leds 16384 0
snd_timer 40960 2 snd_seq,snd_pcm
videodev 258048 3 videobuf2_v4l2,uvcvideo,videobuf2_common
processor_thermal_mbox 16384 2 processor_thermal_rfim,processor_thermal_device
cfg80211 974848 3 iwlmvm,iwlwifi,mac80211
mei_me 40960 1
processor_thermal_rapl 20480 1 processor_thermal_device
mei 135168 3 mei_hdcp,mei_me
snd 106496 29 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_soc_hdac_hdmi,snd_compress,snd_soc_core,snd_pcm,snd_soc_skl_hda_dsp,snd_rawmidi
hid_multitouch 32768 0
mc 65536 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common
intel_rapl_common 40960 2 intel_rapl_msr,processor_thermal_rapl
ecdh_generic 16384 1 bluetooth
ecc 36864 1 ecdh_generic
soundcore 16384 1 snd
intel_soc_dts_iosf 20480 1 processor_thermal_device_pci_legacy
intel_pch_thermal 20480 0
int3403_thermal 20480 0
int3400_thermal 20480 0
int340x_thermal_zone 20480 2 int3403_thermal,processor_thermal_device
acpi_thermal_rel 16384 1 int3400_thermal
acpi_tad 20480 0
asus_wireless 20480 0
acpi_pad 184320 0
mac_hid 16384 0
sch_fq_codel 20480 1
ipmi_devintf 20480 0
ipmi_msghandler 122880 1 ipmi_devintf
msr 16384 0
parport_pc 49152 0
ppdev 24576 0
lp 28672 0
parport 69632 3 parport_pc,lp,ppdev
ramoops 32768 0
reed_solomon 28672 1 ramoops
pstore_blk 16384 0
mtd 77824 0
pstore_zone 32768 1 pstore_blk
efi_pstore 16384 0
ip_tables 32768 8
x_tables 53248 12 xt_conntrack,nft_compat,xt_LOG,xt_tcpudp,xt_addrtype,ip6t_rt,ip6_tables,ipt_REJECT,ip_tables,xt_limit,xt_hl,ip6t_REJECT
autofs4 49152 2
usbhid 65536 0
i915 3104768 21
i2c_algo_bit 16384 1 i915
ttm 86016 1 i915
drm_kms_helper 311296 2 nvidia_drm,i915
syscopyarea 16384 1 drm_kms_helper
mfd_aaeon 16384 0
sysfillrect 20480 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
asus_wmi 45056 2 asus_nb_wmi,mfd_aaeon
sparse_keymap 16384 1 asus_wmi
fb_sys_fops 16384 1 drm_kms_helper
hid_generic 16384 0
crct10dif_pclmul 16384 1
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
aesni_intel 376832 5
crypto_simd 16384 1 aesni_intel
platform_profile 16384 1 asus_wmi
cryptd 24576 3 crypto_simd,ghash_clmulni_intel
cec 61440 2 drm_kms_helper,i915
rc_core 65536 1 cec
r8169 102400 0
drm 622592 16 drm_kms_helper,nvidia,nvidia_drm,i915,ttm
i2c_i801 36864 0
ahci 45056 3
intel_lpss_pci 24576 0
intel_lpss 16384 1 intel_lpss_pci
i2c_smbus 20480 1 i2c_i801
xhci_pci 24576 0
realtek 32768 0
libahci 45056 1 ahci
idma64 20480 0
xhci_pci_renesas 20480 1 xhci_pci
i2c_hid_acpi 16384 0
i2c_hid 36864 1 i2c_hid_acpi
wmi 32768 4 asus_wmi,wmi_bmof,mfd_aaeon,mxm_wmi
video 61440 2 asus_wmi,i915
hid 151552 4 i2c_hid,usbhid,hid_multitouch,hid_generic
pinctrl_cannonlake 36864 0

The only error that I see are the following, and they should not have any effect on the network functions:

Err:2 cdrom://Ubuntu 22.04 LTS _Jammy Jellyfish_ - Release amd64 (20220419) jammy Release
Err:8 https://ppa.launchpadcontent.net/kritalime/ppa/ubuntu jammy InRelease
  403 Forbidden [IP: 185.125.190.52 443]
Err:11 https://ppa.launchpadcontent.net/mc3man/mpv-tests/ubuntu jammy Release
  404 Not Found [IP: 185.125.190.52 443]

1. You have the installation DVD still enabled as a repository source, although you no longer have the installer DVD inserted.
2. The kritalime/ppa PPA is obsolete, see the first lines in https://launchpad.net/~kritalime
3. The mc3man/mpv-tests PPA does not contain any software for Ubuntu jammy and also has to be removed from your configuration.

Open a terminal window and execute the command
software-properties-gtk
On the different sheets inside that program search for the reference to kritalime, mc3man and the installer DVD and remove the tickmarks for them. For kritalime and mc3man you should even remove the whole entries.

ok, I'll do that.

Update on symptoms:
FreeOffice Word definitively not working as should, several tests shows that is taking symbols as commands (/,-).
Bluetooth: I found it on, but I don't use it. Turned it off but It turns on by it self,
Router: Suddenly one of the WiFi stop working, This is same symptom I had before the previous problem with network.
Shut down: After clicking the menu command, it says that there is a process still running(?) and asked me the pass to be sure to turn off the laptop. (how can I check which process is running?)
Turn on: several error messages (how to read them?)
Update on actions taken:
I blocked the internet in and out in the firewall.
I am not using LibreOffice until feeling secure of doing it.
I am not using Krita until is ok.
Router: I reset it and return to work.
I am using the laptop with WiFi off, using "friend" computer when necessary and possible. This is not to worsen the situation until finding a solution. Anyway I think I will still be able to restore the situation with Time Shifter as I did, if necessary.

First attempt:

$ software-properties-gtk

(software-properties-gtk:7128): Gtk-WARNING **: 11:10:13.730: Theme parsing error: gtk.css:1:2: Expected a valid selector

(software-properties-gtk:7128): Gtk-CRITICAL **: 11:10:32.270: gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkNotebook

(software-properties-gtk:7128): Gtk-CRITICAL **: 11:10:32.270: gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkNotebook

Second attempt (after removing tickmarks and removing whole entries)

$ software-properties-gtk

(software-properties-gtk:7860): Gtk-WARNING **: 11:19:00.154: Theme parsing error: gtk.css:1:2: Expected a valid selector

Result: the changes were accepted
-------------

NOTICE!

At 15:27, Saturday: attempt to connect to WiFi:
Surprise! No WiFi in Settings, Network shows only VPN and an empty Network proxy turned to manual (HTTP Proxy 8080, other proxies and host in 0, and in the ignore host: local host, 127.0.0.0/8, ::1)

So I returned back to the future!

If needed more information that requires internet access I can see if TimeShifter is still willing to returning me to early September, but I have the feeling that was a one time chance.

I feel the impulse to uninstall Kryta, which is experimental, I can always download later a stable Kryta.
What is the sequence of terminal commands to completely uninstall, remove and/or purge the installed program?
can I do it without internet?
Also, how I completely uninstall protonVPN? -- keep in mind that I have no access to the internet, for the time being.

Mon Nov 28:

1. I reset the BIOS of the laptop to see if there is any hardware problem.
2. The laptop restarted and I clicked the upper-right button to access the settings.
3. A message was displayed in the first line: "Wi-Fi Not Connected"
4. I clicked Settings.
5. A message showed: "Wi-Fi Connection disappeared" and the space for connections available said "Visible Networks" and a big empty space.
6. I clicked Network, on the side. Showed only VPN and the empty Network Proxy.

Light comment: Seems that something in the system is preventing the network manager to do its work.

7. I Checked the Router and it is working normally as the signals are coming to an old desktop, and also to cellphones, just as usual.

Maybe I need top do something to make the network manager to start?

Continue in Question #703984