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Everytime i try to install a newer Nvidia drive ( either v455 and 460 ), my brightness locks at max, and even though the FN keys work and i actually see the brightness bar decreasing... it doesn't change anything, brightness stays at max.

Some aditional info:

OS: Ubuntu 20.04.1 Kernel: 5.8.0-36-generic ( i also tried 5.9 series, doesn't change anything ) Nvidia driver: 450.102.04 Nvidia card: GTX 1070 (dedicated) Laptop: HP Omen 15

Things i've tried:

  • Added the graphics PPA, so now my driver manager shows nvidia 460 available instead of 455. Anyway, the problem remains the same.
  • Tried a newer kernel, no joy either.
  • Added the following to my grub file: GRUB_CMDLINE_LINUX_DEFAULT="acpi_backlight=vendor" No joy either.
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If anyone comes here with the same issue: Waiting for the bug fix: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/+bug/1905591

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