https://bugs.kde.org/show_bug.cgi?id=404092

--- Comment #2 from madc...@atlas.cz ---
(In reply to Vlad Zagorodniy from comment #1)
> > Maximum external resolution: 2560x1600
> 
> https://support.lenovo.com/ua/en/solutions/pd015734

I don't know what is the Lenovo specification based on but it is clearly wrong.

1) I *am* able to set 3840x2160@30 Hz mode in X11 and it works perfectly fine.
2) It actually *is* possible to get the same mode in Wayland session but it is
a major hassle, requires unplugging and replugging of the external display at
the right time and even then the results are sort of random.

I can only conclude that the specs are based on some artificial limitation of
the Intel GPU driver for Windows. The hardware itself can do 4K at 30 Hz, it is
just KWin in Wayland mode that is having issues here.

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