| Summary: | Dual monitor setup: Program window display gets mashed up when small old monitor is configured left (aside new higher dpi monitor) | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | t061 |
| Component: | multi-screen | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED UNMAINTAINED | ||
| Severity: | normal | CC: | nate |
| Priority: | NOR | ||
| Version First Reported In: | 5.18.7 | ||
| Target Milestone: | --- | ||
| Platform: | openSUSE | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
| Attachments: |
Screenshot
Screenshot old monitor right=OK |
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Created attachment 143289 [details]
Screenshot old monitor right=OK
Very likely an issue specific to the proprietary NVIDIA driver. (In reply to Nate Graham from comment #2) > Very likely an issue specific to the proprietary NVIDIA driver. But why does it work with LibreOffice in GTK3 mode then, or VLC with custom skin? GTK3 programs seem to be always rendered correctly, no matter where the small monitor is configured. Because GTK apps draw using the CPU, not the GPU. The trade-off there is higher CPU and energy usage, but protection from GPU driver bugs. This bug was reported against an outdated version of KWin. We have made many changes since the. If the issue persists in newer versions can you reopen the bug report updating the version number. |
Created attachment 143288 [details] Screenshot SUMMARY The program window display of some programs (VLC at video playback, Kontact, LibreOffice) gets mashed up when small old monitor is configured left (aside new higher dpi monitor). (Settings-Display and monitor). When the old small monitor is configured right aside the new one, everything works fine. STEPS TO REPRODUCE 1. Open Settings - Display and monitor 2. Move the box representing the old monitor to the left 3. Start Kontact, VLC player (video playback) or LibreOffice --> program window display will be mashed up. :( 4. Move the box representing the old monitor to the right (no restart required) 5. Start Kontact, VLC player or LibreOffice again --> everything works fine :) See screenshots. Workaround: a) Libre Office: remove libreoffice-qt5 and libreoffice-gtk2 package, install libreoffice-gtk3 package instead (?!) b) VLC: use custom skin ("avs 95 beta") Hardware: Main display: Eizo 27" 2560 x 1440 (144ish-dpi) 2nd display: Acer 19" 1280x1024 Geforce GT 610 Software: OpenSuse Leap 15.3 KDE 5.18 LTS NVIDIA 390.144-lp153.31.1 graphics driver (closed source) libqt* 5.12.7* KDE Framework: 5.76