REMARK: There seems to be a conflict with elan module. As a successul workaround I disabled the elants_i2c module in grub:
GRUB_CMDLINE_LINUX_DEFAULT="initcall_blaclist=elants_i2c"
This is just a workaround. However, the internal keyboard seems to work proper in the moment. No negative impact on loading of touchpad module (sudo modprobe i2c-hid-acpi) which is always necessary to get the touchpad working.
REMARK:
There seems to be a conflict with elan module.
As a successul workaround I disabled the elants_i2c module in grub:
GRUB_CMDLINE_ LINUX_DEFAULT= "initcall_ blaclist= elants_ i2c"
This is just a workaround.
However, the internal keyboard seems to work proper in the moment.
No negative impact on loading of touchpad module (sudo modprobe i2c-hid-acpi) which is always necessary to get the touchpad working.