| Summary: | External monitor randomly blacking out for a few seconds | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Kubek4155 <bumblebeepllxd124> |
| Component: | multi-screen | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED WORKSFORME | ||
| Severity: | normal | CC: | nate, xaver.hugl |
| Priority: | NOR | Keywords: | multiscreen |
| Version First Reported In: | 6.3.1 | ||
| Target Milestone: | --- | ||
| Platform: | Arch Linux | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
| Attachments: |
drm_info dump
Photo of everything being red on the monitor as mentioned in comment 3 |
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Description
Kubek4155
2025-02-18 19:18:03 UTC
Please attach the output of drm_info with the external monitor connected. This sounds very difficult to debug to be honest. There's really no pattern for when it happens? Created attachment 178649 [details]
drm_info dump
(In reply to Zamundaaa from comment #1) > Please attach the output of drm_info with the external monitor connected. > > This sounds very difficult to debug to be honest. There's really no pattern > for when it happens? I'm not sure this is what you meant but I attached the output. Yeah, I haven't recognized a pattern here. Sometimes it happens very often, sometimes it does not. For some time I believed this is becuause of media playback or games but it isn't the case, it can happen no matter what is the computer doing. Also I forgot to mention that sometimes just before a blackout happens, everything on the monitor turns red for like 0.1 second. I checked and it looks exactly like if you were to use that night colors option with the temperature set all the way to max. Imma attach a photo of what I mean. Just as I was writing this a blackout happened again but only a single line went red before it. Created attachment 178652 [details] Photo of everything being red on the monitor as mentioned in comment 3 Okay, that *could* be link-retraining happening when the connection between GPU and display goes bad. We should probably show a notification when that happens. Have you tried a different cable or port? It might be less sensitive to that issue. A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/7207 Git commit 40fd44ce7b46389ab569ec0b49f5c29d962bf8cd by Xaver Hugl. Committed on 20/02/2025 at 21:06. Pushed by zamundaaa into branch 'master'. backends/drm: log when link training is necessary M +3 -0 src/backends/drm/drm_gpu.cpp https://invent.kde.org/plasma/kwin/-/commit/40fd44ce7b46389ab569ec0b49f5c29d962bf8cd A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/7210 Git commit 3ce3299c673d07a4b9bd0a6bc960c35001018ed5 by Xaver Hugl. Committed on 20/02/2025 at 21:30. Pushed by zamundaaa into branch 'Plasma/6.3'. backends/drm: log when link training is necessary (cherry picked from commit 40fd44ce7b46389ab569ec0b49f5c29d962bf8cd) Co-authored-by: Xaver Hugl <xaver.hugl@gmail.com> M +3 -0 src/backends/drm/drm_gpu.cpp https://invent.kde.org/plasma/kwin/-/commit/3ce3299c673d07a4b9bd0a6bc960c35001018ed5 (In reply to Zamundaaa from comment #5) > Okay, that *could* be link-retraining happening when the connection between > GPU and display goes bad. We should probably show a notification when that > happens. > > Have you tried a different cable or port? It might be less sensitive to that > issue. I can't believe it but I have been using a different cable for 3 hours total and a single blackout didn't happen (I think one would occur with the previous cable in such a period of time). The one I am using now is from ps4 and the one I have been using before is a Klanet brand hdmi 2.1 cable (though I don't believe it is a 2.1 cable). I bought it for like 10$ and this brand seems to be very unknown, only sites with this stuff are Polish and Slovakian sites. I can find the link with that cable if you want. If anything happens I'll report that. Honestly how can an hdmi cable do stuff like this to a system? 🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME. For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging. Thank you for helping us make KDE software even better for everyone! 🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME. |