Public issue detail

Desktop graphics/session failure investigation for KDE Wayland desktop (nouveau)

Repeated EGL/Mesa/Qt desktop warnings affected chrome, adb, node, systemsettings, sddm-helper-start-wayland on KDE Wayland desktop (nouveau), suggesting a shared compositor or graphics-session failure.

highpackage: kwin-waylandsource: kwinscore: 110reports: 1

Last seen: 2026-05-27 05:28 UTC. Public JSON: /v1/issues/019e108e-a3e6-75f3-88bb-62a8c5c69c94

Technical snapshot

These are the public-safe log lines and high-level signals Fixer kept while correlating a shared desktop graphics/session failure.

Desktop graphics/session markers

  • Affected apps: chrome, adb, node, systemsettings, sddm-helper-start-wayland, dunst
  • Graphics driver: nouveau
  • Compositor: kwin_wayland
  • Why Fixer classified it this way: Fixer correlated repeated EGL/Mesa/Qt warnings across 26 desktop apps with session/compositor instability and crashes in chrome, adb, node, systemsettings, dunst. Fixer attached a bounded live profile to kwin_wayland after compositor-stall markers and saw i915_runtime_pm_status (7.07% of sampled CPU) while classifying the live behavior as `futex-lock-contention`.
  • Package: kwin-wayland 4:6.5.4-5
  • Kernel: 6.19.10+deb14-amd64
  • Distribution: debian
qt.qpa.wayland: Could not create EGL surface (EGL error 0x3000)
qt.qpa.wayland: There are no outputs - creating placeholder screen
qt.qpa.wayland: eglSwapBuffers failed with 0x300d, surface: 0x0
01:59:44.489-info qt.qpa.wayland unknown@0 # There are no outputs - creating placeholder screen
01:58:25.495-info qt.qpa.wayland unknown@0 # There are no outputs - creating placeholder screen
qt.qpa.wayland: Creating a popup with a parent, QWidgetWindow(0x5627d7471de0, name="Ui::RpWidgetClassWindow") which does not match the current topmost grabbing popup, QWidgetWindow(0x5627e8934620, name="Ui::RpWidgetClassWindow") With some shell surface protocols, this is not allowed. The wayland QPA plugin is currently handling it by setting the parent to the topmost grabbing popup. Note, however, that this may cause positioning errors and popups closing unxpectedly. Please fix the transient parent of the popup.
kwin_wayland_drm: The main thread was hanging temporarily!
18:25:56.393-info qt.qpa.wayland unknown@0 # There are no outputs - creating placeholder screen
00:33:17.741-info qt.qpa.wayland unknown@0 # There are no outputs - creating placeholder screen
00:14:12.521-info qt.qpa.wayland unknown@0 # There are no outputs - creating placeholder screen

Possible duplicates

These are suggestions based on sanitized trigram similarity plus structured fields like package, subsystem, classification, and wait site. They are not auto-merged.

Desktop graphics/session failure investigation for KDE Wayland desktop

possible duplicate

Repeated EGL/Mesa/Qt desktop warnings affected kwin_wayland, plasmashell, org_kde_powerdevil, xdg-desktop-portal-kde, org.kde.kwalletd6 on KDE Wayland desktop, suggesting a shared compositor or graphics-session failure.

highpackage: kwin-waylandsource: kwinscore: 110reports: 2similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same wait site

Last seen: 2026-07-10 01:21 UTC. Public page: /issues/019ddfed-62fb-79f3-967c-79873131796b. Public JSON: /v1/issues/019ddfed-62fb-79f3-967c-79873131796b

Published attempts

No public attempts have been published for this issue yet.

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