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Brightness control doesn't work on Solus Budgie
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Description

After fixing the suspend issue I had in T7517 2 new backlight devices appeared in /sys/class/backlight making 3 folders in total: intel_backlight, acpi_video0 and acpi_video1.

When I use the brightness hotkeys on my keyboard the backlight window appears the bar increases/decreases depending on the button pressed but the screen doesn't brighten/dimm accordingly. But when I use echo {value} > /sys/class/backlight/intel_backlight/brightness the screen dimms/brighten as it's supposed to so I think I just need to tell Budgie to access this brightness controller instead of the other ones, how can I do that ?

EDIT: I already tried to mask systemd-backlight@backlight:acpi_video0 and systemd-backlight@backlight:acpi_video1, it doesn't solve the problem

Tzigamm created this task.Mar 5 2019, 1:57 PM
Tzigamm updated the task description. (Show Details)Mar 5 2019, 2:01 PM
Girtablulu edited projects, added Software; removed Lacks Project.Apr 10 2019, 8:56 AM

Update: when I plug in the laptop the brightness goes to its max, when I unplug it brightness goes down to its minimum.

I don't actually know what is responsible for this so I don't know if that helps

Budgie does this through gnome-settings-daemon. That's about all I know atm.

Tzigamm claimed this task.Thu, Aug 1, 9:00 PM
Tzigamm closed this task as Resolved.

Okay so I fixed my problem, but it probably won't help people that come here looking for the answer to my question.

The solution to my problem was to use the kernel parameter acpi_backlight=none, then every problem I had went away!