| Summary: | Full screen in some applications causes low display refresh rate | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | deadmeu <deadmeu> |
| Component: | general | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | djneba, xaver.hugl |
| Priority: | NOR | ||
| Version First Reported In: | 6.0.4 | ||
| Target Milestone: | --- | ||
| Platform: | Arch Linux | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
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Description
deadmeu
2024-04-21 07:36:13 UTC
Strangely, I have just tried to capture a video of this bug using OBS, but can no longer reproduce it. I'll see if I can reproduce this effect and will provide an update when I can. I can confirm. I run games in full screen. Frames are dropping like crazy even though my hardware was pushing 100+ fps before. Now the framerates are about 2 times lower. Should still be playable but it stutters even at 50 fps. Looks more like 10 fps. I can confirm. I run games in full screen. Frames are dropping like crazy even though my hardware was pushing 100+ fps before. Now the framerates are about 2 times lower. Should still be playable but it stutters even at 50 fps. Looks more like 10 fps. I've been experiencing it again all day today. I think a reboot resets it. I have not been able to resolve it as occurred yesterday. Visually, it looks as though the refresh rate drops to around 30 HZ. I suspect it is graphics related, as I have noticed that if I have a video playing on one display, and go full screen on another to trigger the effect, the video plays with terrible graphical artifacts. The artifacts appear as Horizontal bars across the entire video, comprised of smaller squares of various colours. When I move the mouse on the full-screen display I can see the cursor move at a choppy framerate, and the video artifacts like crazy. 6.0.4.1 is out with a fix for a performance regression for fullscreen apps, did that fix this issue too?
> I suspect it is graphics related, as I have noticed that if I have a video playing on one display, and go full screen on another to trigger the effect, the video plays with terrible graphical artifacts. The artifacts appear as Horizontal bars across the entire video, comprised of smaller squares of various colours. When I move the mouse on the full-screen display I can see the cursor move at a choppy framerate, and the video artifacts like crazy.
Does that only happen while the video is full screen, and does it go away if you move a small window over the fullscreen video?
I had no artifacts like the op. This new version did solve my performance problem. I've just updated to 6.0.4.1 and I can confirm the issue is resolved. I think the artifacting I was experiencing was more of a symptom of the performance issue with my combination of hardware & mesa. I have often experience artifacting in some full screen games prior to this issue so I don't think any of that was related to this bug. Thanks! |