After reinstalling my Yoga 11S laptop yet again I ran into the lovely problem with the brightness control. (Hint: It does not work out of the box) Luckily the internet came to the rescue, but not with all the info put together, so here goes.
It is really just 4 simple steps (that sounds like a clickbait article).
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"in
- Blacklist the ideapad_laptop in modprobe by adding
blacklist ideapad_laptopto your
- Restart ;)
Thats all there is to it. Most of the information is taken from this Ask Ubuntu answer. The only information that I needed to dig up was the location of the grub config file, that I found in another Ask Ubuntu answer.