Comment 0 for bug 2031104

1) Release of Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04

2) version of package used
unknown

Additional information
- "linux-signed-hwe-6.2" was chosen, when I used the link https://launchpad.net/ubuntu/+source/linux (see 5)
- opted for unknown, because I wasn't sure about that

3) What did I expect to happen
3.1) What I did
- Fresh install Ubuntu 22.04.2 LTS on Lenovo X201 Tablet
-- Status: Touchscreen and pen working, shown and configurable in system settings as Wacom (additional information see below)
- Software Updater used to update from 22.04.2 to 22.04.3
3.2) What I expected
- Expected Touchscreen and pen continue to work

4) What happened instead
- Touchscreen and pen stopped working
- Wacom not listed in system settings anymore

5) Additional information

I have been following instructions from https://wiki.ubuntu.com/DebuggingTouchpadDetection, seemed to be applicable to my problem, too:

- Executed sudo cat /proc/bus/input/devices under 22.04.3 (result see below 5.2)
- Didn't see Wacom touchscreen or pen
- Followed recommendation to file a bug report using link https://launchpad.net/ubuntu/+source/linux

Additional preparation: Reinstall 22.04.2 LTS, getting dmesg and device list for comparison

5.1) dmesg | grep -i wacom

5.1.1) 22.04.2 (before update)

[ 7.629695] input: Wacom Serial Penabled 2FG Touchscreen Pen as /devices/pnp0/00:05/tty/ttyS4/serio3/input/input9
[ 7.633934] input: Wacom Serial Penabled 2FG Touchscreen Finger as /devices/pnp0/00:05/tty/ttyS4/serio3/input/input10
[ 26.705762] input: Wacom Serial Penabled 2FG Touchscreen Pen as /devices/pnp0/00:05/tty/ttyS4/serio4/input/input17
[ 26.706089] input: Wacom Serial Penabled 2FG Touchscreen Finger as /devices/pnp0/00:05/tty/ttyS4/serio4/input/input18

5.1.2) 22.04.2 (after update)

[ 8.018162] input: Wacom Serial Penabled 2FG Touchscreen Pen as /devices/pnp0/00:05/tty/ttyS4/serio3/input/input9
[ 8.018535] input: Wacom Serial Penabled 2FG Touchscreen Finger as /devices/pnp0/00:05/tty/ttyS4/serio3/input/input10

5.2) Device list 22.04.3 does not contain the following entries from 22.04.2

Device: Wacom Serial Penabled 2FG Touchscreen Pen
Kernel: /dev/input/event9
Group: 10
Seat: seat0, default
Size: 263x165mm
Capabilities: tablet
Tap-to-click: n/a
Tap-and-drag: n/a
Tap drag lock: n/a
Left-handed: n/a
Nat.scrolling: n/a
Middle emulation: n/a
Calibration: identity matrix
Scroll methods: none
Click methods: none
Disable-w-typing: n/a
Accel profiles: none
Rotation: n/a

Device: Wacom Serial Penabled 2FG Touchscreen Finger
Kernel: /dev/input/event10
Group: 10
Seat: seat0, default
Size: 263x165mm
Capabilities: touch
Tap-to-click: n/a
Tap-and-drag: n/a
Tap drag lock: n/a
Left-handed: n/a
Nat.scrolling: n/a
Middle emulation: n/a
Calibration: identity matrix
Scroll methods: none
Click methods: none
Disable-w-typing: n/a
Accel profiles: n/a
Rotation: n/a

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.2.0-26-generic 6.2.0-26.26~22.04.1
ProcVersionSignature: Ubuntu 6.2.0-26.26~22.04.1-generic 6.2.13
Uname: Linux 6.2.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 11 12:10:53 2023
InstallationDate: Installed on 2023-08-11 (0 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 (20230223)
SourcePackage: linux-signed-hwe-6.2
UpgradeStatus: No upgrade log present (probably fresh install)