Hello, 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 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?