Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080ĭefault connected primary 1920x1080+0+0 0mm x 0mmĪnd when I type xrandr -output default -brightness 1 it outputs xrandr: Gamma size is 0.Ĭhanging the line in /etc/default/grub to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" This just stops the brightness keys from working altogether. Xrandr: Failed to get size of gamma for output default When I type xrandr, it outputs the following:
None of the controls affect the brightness in any way. Additionally, the screen is very dim (about half the brightness when I use windows 10). When I press the built in brightness control keys, the brightness bar pops up and goes up and down but it doesn't actually do anything. Question Asus A53S laptop black screen with cursor still showing ? - tried everything.I just installed ubuntu 20.04 on my laptop and the brightness controls do not work. Question Fn key cannot be turned off on Gateway laptop
Please let me know if anyone has any potential solutions available besides the ones I tried many times. It's okay during the day, but during night it's way too bright and I'd love to fix this issue. This has happened with my new HP OMEN (2020 with ryzen)īefore writing here, I tried various potential solutions including turning off adjustable brightness (couldn't do it since such option simply did not exist on windows), tried disabling/enabling display and monitors drivers, using basic windows display driver, uninstalling and reinstalling them, updating all drivers, looked at some registry solution which should have allowed me to change brightness from 0 (screen off) to 100 (full brightness) according to guide, then some sort of CMD solution, troubleshooting power settings, which said that brightness has been optimized, but it didn't change at all and finally, fully clean reinstall of windows.
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