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-   -   xbacklight stopped working - Mint 18.1 Cinnamon (https://www.linuxquestions.org/questions/linux-software-2/xbacklight-stopped-working-mint-18-1-cinnamon-4175640075/)

wingman358 10-10-2018 03:13 AM

xbacklight stopped working - Mint 18.1 Cinnamon
 
Hello, I'm on Mint 18.1 Cinnamon and I am having some issue with xbacklight. I used to be able to adjust my laptop's screen brightness using the commands
Code:

xbacklight -5
or
Code:

xbacklight +5
for example to adjust +/- 5%. Now those same commands don't work... I don't think I've changed anything since.

Any ideas where to look for more info? Where do I look for debug / verbose output?

Thanks

AwesomeMachine 10-10-2018 10:31 AM

You can try 'dmesg' command.

wingman358 10-25-2018 07:10 PM

dmesg doesn't record anything useful. No new debug info is posted to dmesg

ondoho 10-27-2018 01:41 AM

i faintly, vaguely remember reading somewhere that "xbacklight is broken".
not sure if that is true, but you can always try light instead.

wingman358 10-28-2018 05:17 PM

Quote:

Originally Posted by ondoho (Post 5919631)
i faintly, vaguely remember reading somewhere that "xbacklight is broken".
not sure if that is true, but you can always try light instead.

How is xbacklight broken though? It was just working recently and I haven't changed it.. shouldn't there be some debug output somewhere that would describe any errors which indicate that it is broken?


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