hp offecejet pro 6968 does not work with 20.04, did with 19.**

After I updated system to 20.04, my HP OfficeJet Pro 6968 no longer works
normans@Larissa:~$ lsmod | grep usb
usb_storage 77824 1 uas
usblp 24576 0
btusb 57344 0
btrtl 24576 1 btusb
btbcm 16384 1 btusb
btintel 24576 1 btusb
bluetooth 581632 41 btrtl,btintel,btbcm,bnep,btusb,rfcomm
usbhid 57344 0
hid 131072 2 usbhid,hid_generic
normans@Larissa:~$ tail -f /var/log/syslog
Jul 9 15:19:35 Larissa kernel: [464567.905516] audit: type=1400 audit(1594333175.711:175): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91426 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:19:35 Larissa kernel: [464567.905558] TCP: request_sock_TCP: Possible SYN flooding on port 60000. Sending cookies. Check SNMP counters.
Jul 9 15:19:35 Larissa kernel: [464567.905612] audit: type=1400 audit(1594333175.711:176): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91426 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:19:35 Larissa kernel: [464567.905614] audit: type=1400 audit(1594333175.711:177): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91426 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:19:42 Larissa colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
Jul 9 15:21:27 Larissa kernel: [464679.413977] usb 3-2.2: USB disconnect, device number 10
Jul 9 15:19:42 Larissa colord-sane: message repeated 6 times: [ io/hpmud/musb.c 2101: Invalid usb_open: Permission denied]
Jul 9 15:21:27 Larissa ippusbxd[91409]: 60000|25890|
Jul 9 15:21:27 Larissa systemd[1]: ippusbxd@003:010.service: Succeeded.
Jul 9 15:21:52 Larissa wpa_supplicant[1083]: wlan0: WPA: Group rekeying completed with 18:31:bf:88:a1:54 [GTK=CCMP]
Jul 9 15:22:15 Larissa kernel: [464728.031133] usb 3-2.2: new high-speed USB device number 11 using xhci_hcd
Jul 9 15:22:15 Larissa kernel: [464728.143679] usb 3-2.2: New USB device found, idVendor=03f0, idProduct=0d54, bcdDevice= 1.00
Jul 9 15:22:15 Larissa kernel: [464728.143683] usb 3-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jul 9 15:22:15 Larissa kernel: [464728.143685] usb 3-2.2: Product: OfficeJet Pro 6960
Jul 9 15:22:15 Larissa kernel: [464728.143687] usb 3-2.2: Manufacturer: HP
Jul 9 15:22:15 Larissa kernel: [464728.143688] usb 3-2.2: SerialNumber: TH7BO1N1M4
Jul 9 15:22:15 Larissa kernel: [464728.149063] usblp 3-2.2:1.1: usblp1: USB Bidirectional printer dev 11 if 1 alt 0 proto 2 vid 0x03F0 pid 0x0D54
Jul 9 15:22:15 Larissa root: loading HP Device 003 011
Jul 9 15:22:16 Larissa python3: io/hpmud/musb.c 2189: [91493] hpmud_make_usb_uri() bus=003 dev=011
Jul 9 15:22:16 Larissa python3: io/hpmud/musb.c 2287: hpmud_make_usb_uri() uri=hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4 bytes_read=44
Jul 9 15:22:16 Larissa systemd[1]: Starting Daemon to make IPP-over-USB printers available as network printers (003:011)...
Jul 9 15:22:16 Larissa kernel: [464728.297723] audit: type=1400 audit(1594333336.099:178): apparmor="DENIED" operation="open" profile="snap.brave.brave" name="/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2.2/busnum" pid=2853 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.297728] audit: type=1400 audit(1594333336.099:179): apparmor="DENIED" operation="open" profile="snap.brave.brave" name="/sys/devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2.2/devnum" pid=2853 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.319287] usb 3-2.2: usbfs: process 91500 (ippusbxd) did not claim interface 0 before use
Jul 9 15:22:16 Larissa kernel: [464728.321082] usblp1: removed
Jul 9 15:22:16 Larissa systemd[1]: Started Daemon to make IPP-over-USB printers available as network printers (003:011).
Jul 9 15:22:16 Larissa kernel: [464728.331121] audit: type=1400 audit(1594333336.135:180): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/nsswitch.conf" pid=91515 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.331384] audit: type=1400 audit(1594333336.135:181): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/nsswitch.conf" pid=91515 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.331719] audit: type=1400 audit(1594333336.135:182): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91515 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.331763] audit: type=1400 audit(1594333336.135:183): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91515 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.331819] TCP: request_sock_TCP: Possible SYN flooding on port 60000. Sending cookies. Check SNMP counters.
Jul 9 15:22:16 Larissa kernel: [464728.331901] audit: type=1400 audit(1594333336.135:184): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91515 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:22:16 Larissa kernel: [464728.331904] audit: type=1400 audit(1594333336.135:185): apparmor="DENIED" operation="open" profile="ippusbxd" name="/etc/passwd" pid=91515 comm="ippusbxd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
Jul 9 15:22:18 Larissa colord[1199]: failed to get session [pid 81513]: No data available
Jul 9 15:22:21 Larissa colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
lsusb
^C
normans@Larissa:~$ lsusb
Bus 002 Device 002: ID 8087:8000 Intel Corp.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 2109:0812 VIA Labs, Inc. VL812 Hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 5986:055c Acer, Inc BisonCam, NB Pro
Bus 003 Device 003: ID 8087:07dc Intel Corp.
Bus 003 Device 006: ID 046d:c318 Logitech, Inc. Illuminated Keyboard
Bus 003 Device 011: ID 03f0:0d54 HP, Inc USB2.0 Hub
Bus 003 Device 004: ID 045e:00f6 Microsoft Corp. Comfort Optical Mouse 1000
Bus 003 Device 002: ID 2109:2812 VIA Labs, Inc. VL812 Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
normans@Larissa:~$ ls -l /dev/usb/lp* /dev/bus/usb/*/*
ls: cannot access '/dev/usb/lp*': No such file or directory
crw-rw-r-- 1 root root 189, 0 Jul 4 06:17 /dev/bus/usb/001/001
crw-rw-r-- 1 root root 189, 1 Jul 4 06:17 /dev/bus/usb/001/002
crw-rw-r-- 1 root root 189, 128 Jul 4 06:17 /dev/bus/usb/002/001
crw-rw-r-- 1 root root 189, 129 Jul 4 06:17 /dev/bus/usb/002/002
crw-rw-r-- 1 root root 189, 256 Jul 4 06:17 /dev/bus/usb/003/001
crw-rw-r-- 1 root root 189, 257 Jul 4 06:17 /dev/bus/usb/003/002
crw-rw-r-- 1 root root 189, 258 Jul 4 06:17 /dev/bus/usb/003/003
crw-rw-r-- 1 root root 189, 259 Jul 4 06:17 /dev/bus/usb/003/004
crw-rw-r-- 1 root root 189, 260 Jul 4 06:17 /dev/bus/usb/003/005
crw-rw-r-- 1 root root 189, 261 Jul 4 06:17 /dev/bus/usb/003/006
crw-rw-r--+ 1 root lp 189, 266 Jul 9 15:25 /dev/bus/usb/003/011
crw-rw-r-- 1 root root 189, 384 Jul 4 06:17 /dev/bus/usb/004/001
crw-rw-r-- 1 root root 189, 385 Jul 9 09:15 /dev/bus/usb/004/002
normans@Larissa:~$ sudo usb_printerid /dev/usb/lp0
[sudo] password for normans:
Error: No such file or directory: can't open '/dev/usb/lp0'
normans@Larissa:~$ sudo usb_printerid /dev/usb/lp1
Error: No such file or directory: can't open '/dev/usb/lp1'
normans@Larissa:~$ hp-info -i

HP Linux Imaging and Printing System (ver. 3.20.3)
Device Information Utility ver. 5.2

Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4

error: Unable to communicate with device (code=12): hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
error: Error opening device (Device not found).
Device Parameters (dynamic data):
  Parameter Value(s)
  ---------------------------- ----------------------------------------------------------
  back-end hp
  cups-printers ['OfficeJet-Pro-6960']
  cups-uri hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
  dev-file
  device-state -1
  device-uri hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
  deviceid
  error-state 101
  fax-uri hpfax:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
  host
  is-hp True
  panel 0
  panel-line1
  panel-line2
  port 1
  scan-uri hpaio:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
  serial TH7BO1N1M4
  status-code 5002
  status-desc

Model Parameters (static data):
  Parameter Value(s)
  ---------------------------- ----------------------------------------------------------
  align-type 15
  clean-type 4
  color-cal-type 0
  copy-type 0
  embedded-server-type 1
  family-class ['CopperheadXLP']
  fax-type 6
  fw-download False
  icon psc_2300_series.png
  io-mfp-mode 1
  io-mode 1
  io-support 14
  job-storage 0
  linefeed-cal-type 0
  model OfficeJet_Pro_6960
  model-ui HP Officejet Pro 6960
  model1 HP OfficeJet Pro 6960 All-in-One
  model2 HP OfficeJet Pro 6968 All-in-One
  monitor-type 0
  panel-check-type 0
  pcard-type 0
  plugin 0
  plugin-reason 0
  power-settings 0
  pq-diag-type 0
  r-type 0
  scan-src 3
  scan-type 7
  status-battery-check 0
  status-dynamic-counters 0
  status-type 10
  support-released True
  support-subtype 16804
  support-type 2
  support-ver 3.16.8
  tech-class ['CopperheadXLP']
  tech-subclass ['Normal']
  tech-type 2
  usb-pid 3412
  usb-vid 1008
  wifi-config 3

Status History (most recent first):
  Date/Time Code Status Description User Job ID
  -------------------- ----- ---------------------------------------- -------- --------
  07/09/20 15:27:45 5012 Device communication error normans 0

Done.
normans@Larissa:~$ hp-makeuri 003:011

HP Linux Imaging and Printing System (ver. 3.20.3)
Device URI Creation Utility ver. 5.0

Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

CUPS URI: hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
SANE URI: hpaio:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
HP Fax URI: hpfax:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4

Done.
normans@Larissa:~$ lpinfo -v
direct hp:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
network lpd
network socket
network http
network ipp
network ipps
network https
network beh
file cups-brf:/
direct hpfax:/usb/OfficeJet_Pro_6960?serial=TH7BO1N1M4
network ipp://OfficeJet%20Pro%206960%20%5BTH7BO1N1M4%5D._ipp._tcp.local/
normans@Larissa:~$ ubuntu-bug cups
normans@Larissa:~$ Gtk-Message: 15:36:42.083: Failed to load module "canberra-gtk-module"
Gtk-Message: 15:36:42.084: Failed to load module "canberra-gtk-module"
[92627:92627:0709/153642.167016:ERROR:sandbox_linux.cc(374)] InitializeSandbox() called with multiple threads in process gpu-process.