http://bugzilla.opensuse.org/show_bug.cgi?id=1112963
http://bugzilla.opensuse.org/show_bug.cgi?id=1112963#c84
--- Comment #84 from Jean Delvare
OK, Here is what the video corruption looks like (attached).
That I can reproduce. It seems to be a resolution disagreement. By default I get a 1024x768 resolution in Plasma, which looks ugly. The best my AST2050 chipset can do is 1600x900, which is not screen-native, but at least matches the 16:9 ratio of my screen, so I used "xrandr -s 1600x900" to get that. Some time after, I called "xrandr" without argument, and the corruption started immediately. The output of xrandr at that moment was different from what it is usually (different list of resolutions and refresh frequencies). Note that SDDM does use the best resolution by default: 1600x900. And for example IceWM sticks to that. So I think the problem happens when Plasma tries to change the resolution when the user logs in, to something different from what SDDM had. When the corruption happens, I am able to get things back to a correct state by switching to a text console (Ctrl+Alt+F2) and then back to X.org (Ctrl+Alt+F7). Note that I can also get the "wrong" xrandr output, but without the corruption, under IceWM. So it is not Plasma-specific. The problem is that 1600x900 is not in the wrong list, so once it happens, I'm stuck with lower resolutions. I'll do some more tests and post my findings here. At any rate this seems to be a separate issue from the performance issue(s) reported before. -- You are receiving this mail because: You are on the CC list for the bug.