Bug 396946 - Display corruption occurs if system is resumed from suspend/standby/sleep while monitor is off
Summary: Display corruption occurs if system is resumed from suspend/standby/sleep whi...
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: general (other bugs)
Version First Reported In: 5.13.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-07-29 08:32 UTC by Sandeep
Modified: 2021-11-06 22:26 UTC (History)
4 users (show)

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Description Sandeep 2018-07-29 08:32:48 UTC 
Details
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Linux version: 4.17.10
Plasma, kwin : 5.13.3
SDDM: 0.18.0

Plasma Wayland session, started from SDDM 

Steps to reproduce
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* Suspend computer
* Turn off electrical power supply to monitor
* Resume computer
* Turn on electrical power supply to monitor


Observe display corruption - switching TTY's doesn't help either. Does not happen when using Gnome, with GDM or SDDM. Consistently occurs when using Plasma  on Wayland.
Comment 1 David Edmundson 2018-07-29 10:02:15 UTC 
what gets corrupted? Please add a screenshot
Comment 2 Sandeep 2018-07-29 10:43:14 UTC 
(In reply to David Edmundson from comment #1)
> what gets corrupted? Please add a screenshot

I can't take a screenshot, but will take a photo and attach it here.
Comment 3 Sandeep 2018-07-29 10:56:49 UTC 
Here's a bunch of photos, and a video that shows the corruption I'm talking about - https://photos.app.goo.gl/ZEFEf3jA7u5r4Brw8

The system becomes unusable, but I am able to force a restart using Ctrl + Alt + PrtScr + REISUB
Comment 4 Sandeep 2018-08-04 15:55:20 UTC 
I've provided the request info, please see my earlier comments.
Comment 5 Sandeep 2018-08-04 15:57:03 UTC 
This also happens if the monitor is turned off, and then turned on while KDE is running.

Let me know if you need any other information.
Comment 6 Alexander Mentyu 2018-08-06 14:56:05 UTC 
I noticed the sometimes similar display corruption appears in top left part of screen upon logging out from Wayland session with default Intel/NVIDIA video drivers on Yoga 520 laptop without using external display

Distribution: KDE neon Developer Edition
Kernel: 4.15.0-29-generic
Plasma: 5.13.80
Apps: 18.11.70
Qt: 5.11.1
Frameworks: 5.48.0
Comment 7 kde.org 2021-11-06 21:33:33 UTC 
This issue report is quite old. Can you please confirm, that it still persists with KDE 5.23?
Comment 8 Sandeep 2021-11-06 22:25:28 UTC 
It doesn't seem to happen anymore with recent KDE versions. I'm pretty sure it's no longer an issue. You can go ahead and close this bug.