first of all i tried everything i found on internet and didn't get any result.
I have an ASUS Vivobook with AMD RADEON Graphics and I can not adjust the brightness on my laptop, neither with FN keys nor on settings.
The only thing that I have read about but couldn't do is upgrade my kernel. (I did it 2ice but I couldn't boot Ubuntu with the new Kernel).
Did anyone have the same issue?
Thank you in advance!
I upgraded to Ubuntu 20.10 which have kernel 5.8. This might was the problem. Everything works just fine! As I was told on another topic, kernel 5.8 will be available for 20.04 in a few months. Be patience! Or find a way to upgrade your kernel, I could't without issues.
What worked for me (and it is really simple ;-D) was to update the kernel, like in this: https://linuxhint.com/update_ubuntu_kernel_20_04/ where there are three different methods to do it. Choose what you want. Also, before you install the new kernel, I first reset the grub to its initial values, and then reinstalled it. Thanks to the guy from the cited website. (my machine: ubuntu 20.04, ASUS VivoBook AMD Ryzen7 Radeon, Realtek 8821 wifi, seems to work also for ubuntu 19.04 in another laptop)
