I bought a new Asus Vivobook. I installed Ubuntu 20.04 and when I connected my monitor via HDMI I saw that the screen quality is not so good. The brightness seams to high and the gamma (looks very red-heavy) is also not right.
I have a small second Windows 10 partition, there its looking good. And the quality of the notebook screen itself in Ubuntu is also good!
Before the new Asus I had a Dell Vostro 3750 with Ubuntu 18.04, when I connect the monitor to the old notebook it looks totally fine!
I also tried connecting a different monitor to the Vivobook and there the screen quality is also not good. So it seems not to be an issue with the monitor...
Thanks for any help.
PS: I already found this post: Second monitor not detected, brightness not working... with Nvidia (GTX 1660ti) and Ubuntu 20.04 (kernel 5.4.0)
But the solution with upgrading the kernel has no effect. I tried 5.8.1 and 5.11.11
Update 2021-04-08:
Its very strange, I noticed now two times that the screen suddenly looks good. But I changed nothing (at least not consciously). So it seems to be random. Here are two pictures I took from my screen to compare, when its bad and good:
Update 2021-04-10:
I think now, its maybe not a problem of the second monitor, but a problem of the browser. On Firefox everything looks good, also on the second monitor. But on Chromium, Google Chrome and Brave the colors and brightness is wrong. So its a issue with chrome based browsers?
