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#1 2020-10-14 09:51:20

millus
Member
Registered: 2019-07-21
Posts: 49

Screen toggle key not working / Mixer broken

After some recent package updates the brightness keys on this Asus laptop were no longer working.
I was able to get them fixed by creating this file

$ cat /usr/lib/udev/rules.d/90-backlight.rules 
ACTION=="add", SUBSYSTEM=="backlight", RUN+="/bin/chgrp video /sys/class/backlight/%k/brightness"
ACTION=="add", SUBSYSTEM=="backlight", RUN+="/bin/chmod g+w /sys/class/backlight/%k/brightness"
ACTION=="add", SUBSYSTEM=="leds", RUN+="/bin/chgrp video /sys/class/leds/%k/brightness"
ACTION=="add", SUBSYSTEM=="leds", RUN+="/bin/chmod g+w /sys/class/leds/%k/brightness"

However, the third backlight key, the one that toggles the display on/off (has a screen with an x symbol in it) still doesn't work. I typed 'xev' in a terminal and tried pressing it (Fn+F7) but it didn't register. Any idea how to get it working again?

Last edited by millus (2020-10-26 18:49:33)

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#2 2020-10-26 18:48:42

millus
Member
Registered: 2019-07-21
Posts: 49

Re: Screen toggle key not working / Mixer broken

Ok, update - after latest pacman updates, the backlight keys are now ALL broken again despite presence of that file in op, and additionally pulseaudio no longer auto-switches between headphones and speakers.
Instead, after pulling out the headphones pavucontrol mixer will for a split second show "speakers" again but then flip back to "headphones" even though these don't exist anymore. Also, speakers will have "(unavailable)" next to them and choosing them manually will result in silence.

Workaround for broken mixer is to start alsamixer and disable "auto-mute mode", then speakers work again.

Whoever is responsible for constantly breaking these things, you really need to stop.

Last edited by millus (2020-10-26 18:49:00)

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