Brightness keys doesn't work on HP laptop

yeah, my own combinations still works after reboot

so you can keep using custom, or we can try another kernel parameters - only 4 left, so its up to you

just list them here, I will try them in various combinations/kernels and then will use custom ones

ok, so first reset the shortcuts do defaults: fn+f2/f3
theres no need to try them with different kernels… ok going to list them here:

  1. replace the: pcie_aspm=off
    with:
    pci=nommconf
    update grub, reboot, test
  2. replace the: acpi_backlight=video
    with:
    acpi_backlight=vendor
    update grub, reboot
  3. replace the vendor with:
    acpi_backlight=native
    update grub, reboot
  4. replace the native with:
    acpi_backlight=none
    update grub, reboot

if it didnt work, remove them:
acpi_backlight=none
acpi_osi=Linux
keep the mommconf parameter because of the aspm in logs
update grub, reboot
and use the custom shortcuts

ok. thank you!

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