![]() ![]() I use Ubuntu 21.04 Hirsute on built-in NVMe, but Ubuntu 20.04 booted from USB flash drive also does not allow me to control screen brightness. I know this is a popular problem with Lenovo laptops. ![]() ![]() Volume control keys Fn+F1 (off), Fn+F2 (down), Fn+F3 (up) all do work, and KDE shows appropriate indicators when they are pressed. The keys marked for brightness control on the keyboard are supposed to be Fn+F5 (down) and Fn+F6 (up).īut pressing them does not have any effects. ![]()
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