I am trying to control my screen's backlight using xbacklight. I have intel HD graphics 530 (skylake) disabled, and nvidia gtx960M on. (proprietary nvidia-361 driver active)
xbacklight has no effect when my nvidia card is enabled. And in fact, /sys/class/backlight only contains an intel_backlight folder (from which I can change brightness by modifying the value set in the "brightness" folder, even though intel card is disabled)
I tried different solutions found on other posts: - kernel flags like acpi_osi=Linux acpi_backlight=vendor/native/... video.use_native_backlight=1, etc. - Xorg conf file modification ("RegistryDwords" "EnableBrightnessControl=1") - I also tried using redshift to control brightness, with no more success than xbacklight.
I would keep modifying brightness directly from the /sys/class/backlight/brightness file if I didn't experience issues with the saving of the value (which is comprised between 0 and 937..) which sometimes set brightness to 0 even though I specified normal values (like 500..).
Do you know if there is a solution to this problem?
Thanks in advance for your answers =)