I’m running fedora 32 on a Lenovo p50 and using discrete graphics only. Graphics driver is nouveau.
I see that when the screen turns on again after a blank due to inactivity, the brightness is dimmer than before the blank.
I can see the
actual_brightness field reflects this.
$ cd /sys/class/backlight/nv_backlight $ grep . *bright* actual_brightness:90 brightness:90 max_brightness:100 $ sleep 1; xset dpms force off # Screen blanks then I press a key to turn it back on $ grep . *bright* actual_brightness:37 brightness:90 max_brightness:100
Anyone else observe this behaviour?