Backlight stopped working as well as previous solution after solving Panel Self Refresh problem on Fedora 37

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Hi!

I’ve been having issues with the backlight of my laptop since the beginning, but I was able to solve it using grubby, like is specified here, looking for the default kernel with --default-kernel, adding the argument to the args list with sudo grubby --args="amdgpu.backlight=0" --update-kernel OUTPUT_OF_PREVIOUS_COMMAND and rebooting.

I don’t know exactly when it started to happen, but the computer started having some microfreezings every couple of seconds ant it was pretty annoying, and I tried to solve it with what is explained here and following the observations on the commentaries of Neo_Nethshan, I ended up:

  1. Add this to the grub configuration (sudo gedit /etc/default/grub) : GRUB_CMDLINE_LINUX_DEFAULT="i915.enable_psr=0"

  2. Change GRUB_ENABLE_BLSCFG=true in /etc/default/grub to false. This has to be done before generating the grub config, or if not you won’t be able to boot to fedora.

  3. Then remove old grub config : sudo rm /boot/grub2/grub.cfg

  4. After that, generate new : sudo grub2-mkconfig -o /boot/grub2/grub.cfg

  5. Reboot your system.

The problem with the microfreezings seems to be solved, though is still less than a day of implementing it. Now the problem is that after rebooting, the backlight went again to 100% and I cannot change it. I try using grubby, but the configuration is already as it should be, and it doesn’t work.

My kernel is /boot/vmlinuz-6.1.10-200.fc37.x86_64 and my laptop has:

CPU: AMD Ryzen 7 4800H with Radeon Graphics (16) @ 2.900GHz
GPU: NVIDIA GeForce GTX 1650 Ti Mobile
GPU: AMD ATI 05:00.0 Renoir

I appreciate the help you could give me!

2

UPDATE:

After a couple of days I had to go back to how it was, since it actually didn’t got better, but worse.