Backlight device no longer appearing
- Linux 5.17.5
- Laptop with GeForce GTX 1070 Mobile and eDP
-
dmesg.txt with debug enabled in nouveau and
drm.debug=0x116
Commit 6b007654 ("drm/nouveau/backlight: Fix LVDS backlight detection on some laptops") made the backlight device stop appearing on my laptop.
With the commit applied, there is only acpi_video0
in /sys/class/backlight
and setting the brightness on that device doesn't do anything. When it is reverted, there is only nv_backlight
in /sys/class/backlight
and setting the brightness on that device works.
The commit was introduced to fix issue #137 (closed).
Edited by 5l8yj2lv