No keybord after kernel upgrade

[Aussems J.a.c.]

Hi, I am using a Lenovo Thinkpas L15 laptop, X86 X64, with Xubuntu 22.04.04 LTS installed.
The version I am using is:

Linux t-l15 6.5.0-1019-oem #20-Ubuntu SMP PREEMPT_DYNAMIC Mon Mar 18 17:38:55 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

Yesterday, 2024-04-08, the system had a kernel upgrade and sind than I can't use the buildin keyboard of the laptop.
The mouse pad is still working and when I goto the BIOS the keyboard is also working.
At the moment I use a USB keyboard.

When I give the command, cat /sys/class/dmi/id/chassis_type, the system replys with '10'

Who can/will help to solve the problem?
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: pi 1884 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
DistroRelease: Ubuntu 22.04
InstallationDate: Installed on 2024-01-24 (77 days ago)
InstallationMedia: Xubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.1)
MachineType: LENOVO 21H3002SMH
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-1019-oem root=UUID=55d807e5-860a-4445-bf3d-3f39e30424f2 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 6.5.0-1019.20-oem 6.5.13
RelatedPackageVersions:
 linux-restricted-modules-6.5.0-1019-oem N/A
 linux-backports-modules-6.5.0-1019-oem N/A
 linux-firmware 20220329.git681281e4-0ubuntu3.29
Tags: jammy
Uname: Linux 6.5.0-1019-oem x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/01/2024
dmi.bios.release: 1.21
dmi.bios.vendor: LENOVO
dmi.bios.version: R24ET38W (1.21 )
dmi.board.asset.tag: Not Available
dmi.board.name: 21H3002SMH
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76530 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.13
dmi.modalias: dmi:bvnLENOVO:bvrR24ET38W(1.21):bd03/01/2024:br1.21:efr1.13:svnLENOVO:pn21H3002SMH:pvrThinkPadL15Gen4:rvnLENOVO:rn21H3002SMH:rvrSDK0T76530WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_21H3_BU_Think_FM_ThinkPadL15Gen4:
dmi.product.family: ThinkPad L15 Gen 4
dmi.product.name: 21H3002SMH
dmi.product.sku: LENOVO_MT_21H3_BU_Think_FM_ThinkPad L15 Gen 4
dmi.product.version: ThinkPad L15 Gen 4
dmi.sys.vendor: LENOVO

[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

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[Aussems J.a.c. (ramcsir)]

---------------------------------------------------------
I tryed the method with the '/etc/modprobe.d/blacklist-intel_vbtn.conf' file.
Contents of that file is:

# bug in module breaks keyboard, so don't load it
blacklist intel_vbtn

But this doesn't gives a solution.
---------------------------------------------------------
In the file /etc/default/grub
I tryed the commands:

- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.reset"
- GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nomux"

One after the other with NO effect.
--------------------------------------------------------

[Ganton (ganton)]

Thank you very much for reporting this and adding information about your particular case, it's useful. This bug report is a duplicate of another one (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2060727), which is already assigned to a developer.

[Aussems J.a.c. (ramcsir)]

-----------------------------------------------------
I changed in file '/etc/default/grub' the lines:

GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=-1

I used the command 'sudo update-grub' and Reboot the computer.
The grub menu is now shown and I can still use the internal keyboard.

I can choose between kernel version:

- Linux 6.5.0.-1019-oem
- Linux 6.5.0.-1018-oem

When I choose the kernel, 1019, the keyboard does not functions after booting
When I choose the kernel, 1018, the keyboard workes after booting.

So this shows that the problem is caused by the 1019 kernel.