Bug 419545 - Breeze theme screen locker background becomes misaligned after sleep with multi-monitor setup
Summary: Breeze theme screen locker background becomes misaligned after sleep with mul...
Status: RESOLVED FIXED
Alias: None
Product: plasmashell
Classification: Plasma
Component: generic-multiscreen (show other bugs)
Version: 5.18.3
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: 1.0
Assignee: Aleix Pol
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-04-02 15:16 UTC by Chase Lau
Modified: 2021-08-24 15:01 UTC (History)
5 users (show)

See Also:
Latest Commit:
Version Fixed In: 5.23


Attachments
Picture of the layout issue (344.42 KB, image/jpeg)
2020-04-02 15:16 UTC, Chase Lau
Details

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Description Chase Lau 2020-04-02 15:16:33 UTC
Created attachment 127205 [details]
Picture of the layout issue

SUMMARY
After the system has woken up and is waiting for the user to enter the password, the wallpaper will eventually become misaligned on the main screen. This is using the Unsplash wallpaper provider.

STEPS TO REPRODUCE
1. Lock the screen
2. Wait 20ish minutes
3. Wake the system

OBSERVED RESULT
The main screen becomes misaligned.

EXPECTED RESULT
Both screens are fully visible.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Fedora 32, Linux 5.6
(available in About System)
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.67
Qt Version: 5.13.2

ADDITIONAL INFORMATION
Comment 1 David Edmundson 2020-04-02 15:18:57 UTC
Does it happen all the time?

Does it happen with the basic wallpaper provider?

Is everything ok after login.
Comment 2 Chase Lau 2020-04-02 15:29:12 UTC
1. It isn't happening 100% of the time, but WILL happen 100% of the time, if left alone (if that makes sense?)

2. I've changed my provider back to a static image and will report back if something happens.

3. After login everything is fine.
Comment 3 Chase Lau 2020-04-02 17:18:04 UTC
This just happened with the image provider.
Comment 4 Chase Lau 2020-04-15 14:14:37 UTC
I've been trying to pay attention to how the computer acts when it goes to sleep... it seems like the monitor will flicker off, on, off, and when it comes back on the main screen will be mis-aligned.

To verity it isn't the monitor, I tried restarting it and changing some of its zoom settings but the problem persisted.

Display Details:
Monitor 0 (Left): 1920x1080 DVI-D-1
Monitor 1 (Right): 2560x1440 DP-1
Comment 5 Chase Lau 2020-04-17 20:31:29 UTC
Another update: I've noticed that sometimes when I resume from sleep, some windows have moved to my secondary monitor. There may be an underlying issue with my GPU being uninitialized?
Comment 6 Chase Lau 2020-04-20 14:23:41 UTC
Captured a crappy video of the issue happening. Look at the video description for where in the video the problems actually occur. What's weird is that the monitors attempt to sleep a few times but stop after the bug occurs.

https://youtu.be/KM817g6MpR0
Comment 7 Nate Graham 2021-08-17 01:53:58 UTC
Ah, this is one of those things that's fixed in Plasma 5.23.
Comment 8 Nate Graham 2021-08-17 01:55:18 UTC
Oops, wrong bug, sorry.
Comment 9 David Redondo 2021-08-24 12:54:08 UTC
Should be fixed in recent plasma versions since it got rewritten