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Ubuntu 20.04 LTS brightness isn't adjustable

ng flag

I have MSI Modern 14 B4MW-410IN Notebook. Specs - Ryzen 5 Hexacore 4500U. Everything is working fine but I can't change brightness after installing Ubuntu on it (which also using nomodeset otherwise couldn't boot the system). Tried every tutorial but not working.

Matthias Lenmher avatar
nl flag
what did you do to perform brightness switch? from FN + keyboard button or using the battery icon at systray?
ChanganAuto avatar
us flag
@MatthiasLenmher It doesn't matter. With `nomodeset` it couldn't possibly work.
Matthias Lenmher avatar
nl flag
@ChanganAuto thanks, chinese car vendor =) !
ChanganAuto avatar
us flag
@MatthiasLenmher It's brand ambassador ;) and our cars are global
Matthias Lenmher avatar
nl flag
@ChanganAuto Nice!. (ps: i understod we can't make offtopic here hehe. hope you have a nice day)
Lucifer avatar
ng flag
@MatthiasLenmher I have keys for controlling brightness i used that, icons also appeared that brightness is increasing/decreasing but nothing worked. Tried that slider from power in settings and from the control center in the top right nothing worked. Used some online solns like adding acpi_backligh=vendor and all sorts of things. Installed AMD drivers and installed them after installing them my pc didn't start. Now I've uninstalled ubuntu
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