https://bugs.kde.org/show_bug.cgi?id=462551
--- Comment #7 from shin...@o2.pl --- (In reply to Zamundaaa from comment #6) > I see, it's falling back to CPU copy to make it work on the secondary GPU, > which is it pretty slow. You should be able to verify that by looking at the > CPU usage: when you put a video on the external monitor, it'll go up. > > I'm not sure how this could be cause by this update though; there's no > commits related to multi gpu in 5.26.4 that weren't also in 5.26.3, and > NVidia has never supported the fast path that KWin uses to make multi-gpu > work well. > > Did you maybe also change the boot GPU somewhere? NVidia as primary and > Intel as secondary should be fast, only the reverse will be slow. I upgraded Fedora 36 to 37 and it worked fine till there was that update 5.26.3 to 5.26.4. To be honest - on fedora 36 it was working like now... only X11 was working fine... but after upgrade to fedora 37 suddenly I checked Wayland and I was working on it for few days until upgrade... now again it's slow as before in F36 :P I didn't change GPU boot etc. That what you're saying about video and CPU - I played it and on main screen and it was 0-1%, after move to second screen now kwin-wayland is 4-6%. It won't be a problem for me because X11 is working fine (refresh rate) but... after upgrade from F36 to F37 something is broken and I can't use it on X11 because icons disappeared and many other weird things happens - because of that X11 is for me not usable, Wayland is usable but that refresh rate on second screen is getting me nervous because that screen has 240hz ;D -- You are receiving this mail because: You are watching all bug changes.
