Brightness resetting issue
Opened this issue · 4 comments
I don't know if my yoga is faulty or something else is broken, but every time after the screen is blanked either caused by idle/restart/shutdown, the brightness reset to default (around 50%) but if I change the brightness it suddenly changed to previous brightness. I can't seem to find any fix other than some old thread mentioning adding acpi_backlight=vendor to kernel args, but it doesn't solve the problem for me either. Anyone having same issue or know the fix?
My system is Yoga 7 Gen 7 14ARB7 (AMD Ryzen 6600U)
I can reproduce this issue with Mint 21 Cinnamon.
Likely the Window manager should restore the value it has stored on resume, but does not.
But hey, Gnome based desktops are a massive garbage fire when it comes to such things.
Mine occasionally forgets the brightness set after a reboot, but suspend always works and reboots are fine 99% of the time.
I can reproduce this issue with Mint 21 Cinnamon.
Likely the Window manager should restore the value it has stored on resume, but does not. But hey, Gnome based desktops are a massive garbage fire when it comes to such things.
I just realized that all distro that i already tried is gnome based (zorin, popos, ubuntu, fedora) and like gave up, then i just remembered that fedora has spin and tried kde version. The brightness actually stayed for the first time in my machine running linux.
NixOS 23.05 here. After sleep on GNOME, it will pick a default brightness "fit for the room" (it might always be 50% i have not tested this idea thoroughly). The jumpiness in brightness change seems realted to that for me, GNOME expected it to still be at the old value, say "35%", instantly sets it to that, and then does a normal transition to "40%" lets say.