[FAILED] Failed to start Load/Save Screen Backlight Brightness of blacklight:amdgpu_b10

Support
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Hi everyone,

Im having brightness problems whenever i start or reboot my laptop, it start at 100% brightness and show this error “ [FAILED] Failed to start Load/Save Screen Backlight Brightness of blacklight:amdgpu_b10“ that usually come with other similar error ```
[FAILED] Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0

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Hi!
You can try this

edit /etc/default/grub
add acpi_backlight=vendor to GRUB_CMDLINE_LINUX_DEFAULT .
then run sudo update-grub
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hi, thank you for replying, but i especify that on my message, but somehow the complete message is not showing, im having problems with the one that is on the tittle of the message, where it is something related to my graphyc card.

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I recently reinstalled Manjaro KDE on an HP 14 with Ryzen 3 2200U and I’m experiencing the same problem. It had an old (a few years) XFCE install that didn’t have the brightness problem. I haven’t looked much into it.

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