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feluxe

Member

Registered: 2017-12-21

Posts: 14

Laptop keyboard not working after loing

Hi,

my laptop (thinkpad x280) keyboard stops working after the login screen.

It worked fine for years. I never had this issue. I think it came with an update.

The funny part:

If I reinstall "linux" and "linux-firmware":

pacman -R linux linux-firmware
pacman -S linux linux-firmware

and reboot the system the keyboard will continue to work until the next reboot.

Does anyone know where to go from there?

Thanks!

UPDATE

I noticed that the keyboard can be enabled with "xinput". It works again if I run the following:

> sudo xinput list

⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ Synaptics TM3381-002                    	id=10	[slave  pointer  (2)]
⎜   ↳ TPPS/2 Elan TrackPoint                  	id=11	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ Power Button                            	id=6	[slave  keyboard (3)]
    ↳ Video Bus                               	id=7	[slave  keyboard (3)]
    ↳ Sleep Button                            	id=8	[slave  keyboard (3)]
    ↳ Integrated Camera: Integrated C         	id=9	[slave  keyboard (3)]
    ↳ ThinkPad Extra Buttons                  	id=13	[slave  keyboard (3)]
    ↳ Chicony USB Keyboard Consumer Control   	id=14	[slave  keyboard (3)]
    ↳ Chicony USB Keyboard System Control     	id=15	[slave  keyboard (3)]
    ↳ Chicony USB Keyboard                    	id=16	[slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard            	id=12	[slave  keyboard (3)]

> sudo xinput enable 12

It seems that the system update disabled the keyboard somehow. But I wonder why and how? I don't think calling "xinput enable 12" in "xinitrc" is the right approach to fix this. Does anyone know which config is responsible for this?

Last edited by feluxe (2022-01-22 11:02:20)

feluxe

Member

Registered: 2017-12-21

Posts: 14

Re: Laptop keyboard not working after loing

I found the problem.

For some reason the xinput device ids changed and I had a script to disable the touchpad in my i3wm config:

exec --no-startup-id xinput --disable 12

Id 12 is now the id of the keyboard and should not be disabled.

Now the only question left is why did the ids change?