I have two ThinkPad laptops, both with 120 Hz IPS panels.
On both I have installed EOS with KDE. So far, so good.
Now, the issue I have is that KDE Kwin doesn’t detect the higher refresh rate.
Gnome, on the other hand, easily detects and use the 119 or 120Hz refresh rate, so I know that the panels I’ve upgraded to are sending the correct EDID.
What I tried.
First I ran cvt 1920 1080 to find out the details of actual display mode for X11.
Created a new xrandr modest, and forced it to use with xrandr.
Well, screen flickered a second and finally the image and graphics were smooth.
In my ~/kwinrc I set up MAXFPS=120Hz and all.
Also, created a 10-modeset.conf in my X.org config. Save and reset and the new refresh rate doesn’t show up and here is where I am stuck.
What I did wrong? Anyone can point me in the right direction?
PS Found out that this a ancient bug and is still to be addressed. People nowadays are running better screen with over 60Hz. It’s time to address it, don’t you think?