Plasma/Wayland Known Significant Issues: Difference between revisions

Latest revision as of 11:46, 12 February 2025

This page tracks the "Errata/Known issues" that are specific to the the Plasma Wayland session: significant omissions compared to the X11 session, quality-of-life annoyances, problems with workarounds, etc. This is part of KDE's Wayland goal.

It is the Wayland-specific companion to Plasma/X11 Known Significant Issues.

KWin/compositing/window management

Native Wayland windows cannot save and restore their window positions; KWin would need to do it: https://bugs.kde.org/show_bug.cgi?id=15329
"Spare Layouts" feature not implemented: https://bugs.kde.org/show_bug.cgi?id=455431
Using key combination shortcuts to type phrases into windows is not yet implemented: https://bugs.kde.org/show_bug.cgi?id=478219
No way to change the gamma or manually adjust the colors without generating or finding an appropriate ICC profile

Accessibility

Can't move pointer with numpad keys: https://bugs.kde.org/show_bug.cgi?id=478620 - there's a pending Merge request
Slow Keys feature doesn't work: https://bugs.kde.org/show_bug.cgi?id=490826
Only Maliit is supported, which is not a proper accessibility-oriented virtual keyboard (e.g. no modifier keys or arrow keys)

Graphics Tablet Support

Can't switch between absolute and relative modes for the graphic tablet. Bug report and Pending Merge Requests 1 and 2.
Can't create multiple profiles for tablet configurations so artists can choose different profiles (e.g. different shortcuts and pen pressure) for different workflows like inking a comic or doing vector art: https://bugs.kde.org/show_bug.cgi?id=477671
The UI for mapping tablet area and its buttons has a few issues compared to the UI in the X11 KCM: https://bugs.kde.org/show_bug.cgi?id=477750
Graphic tablets may have a touch strip or ring, but in the Wayland KCM, you can't assign shortcuts to touch rings. Bug report: https://bugs.kde.org/show_bug.cgi?id=477752
Some tablets allow users to switch between touch ring modes. For example, you can click a button and change the mode from one set of shortcuts like scrolling to another set of shortcuts, like changing hue or zooming in and out. This is not possible on Plasma Wayland: https://bugs.kde.org/show_bug.cgi?id=477787

Upstream

Waiting on new Wayland protocol

No session restore for native Wayland windows: https://bugs.kde.org/show_bug.cgi?id=436318 / https://invent.kde.org/plasma/kwin/-/issues/113. Our session management recovery engine is based on the X Session Management Protocol and there is apparently currently no generic concept to do it on Wayland. But on Qt it's plugin-able and GNOME has had their own implementation for some time. Possible workaround: Use Hibernation (Suspend To Disk) instead.
Picture-in-Picture windows from web browsers get a Task Manager icon and do not stay on top: https://bugs.kde.org/show_bug.cgi?id=463288; requires https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/132 and adoption in apps using PiP windows (like web browsers)
Calibration/Profiling tools like DisplayCAL and argyllcms are used with colorimeters to ensure monitors are displaying color accurately. A portal (which has not been proposed yet) is required for these tools to be able to calibrate the monitor on Wayland and hand the ICC profile over to the compositor as discussed here. Relevant DisplayCAL issue here: https://github.com/eoyilmaz/displaycal-py3/issues/133
Global Menu is not supported for non-Qt apps: https://bugs.kde.org/show_bug.cgi?id=424485. Needed wayland protocol: see https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/52

GTK

With screen scaling, cursor size is incorrect when hovering over native Wayland apps written with the GTK toolkit due to its lack of support for the cursor-shape-v1 protocol: https://bugs.kde.org/show_bug.cgi?id=451158. See also https://bugs.kde.org/show_bug.cgi?id=459161 for general cursor size issues.
When the compositor crashes or restarts, non-Qt apps are killed — Qt apps do stay alive, and work is ongoing to make other apps survive as well; see see https://invent.kde.org/plasma/kwin/-/wikis/Restarting

NVIDIA

Worse performance on external monitor connected to NVIDIA GPU when default GPU is Intel: https://bugs.kde.org/show_bug.cgi?id=452219

Fixed in an upcoming version

QtQuick windows exhibit jittery resizing: https://bugs.kde.org/show_bug.cgi?id=477900 - https://codereview.qt-project.org/c/qt/qtwayland/+/591892 - Fixed in Qt 6.9.0

@@ Line 1: / Line 1: @@
-This page tracks the "Errata/Known issues" that are specific to the the Plasma Wayland session: significant quality-of-life annoyances, significant problems with workarounds, etc. This is part of KDE's [[Goals/Wayland|Wayland goal]].
+This page tracks the "Errata/Known issues" that are specific to the the Plasma Wayland session: significant omissions compared to the X11 session, quality-of-life annoyances, problems with workarounds, etc. This is part of KDE's [[Goals/Wayland|Wayland goal]].
 It is the Wayland-specific companion to [[Plasma/X11 Known Significant Issues]].
-== Session management ==
+== KWin/compositing/window management ==
-* No session restore for native Wayland windows: https://bugs.kde.org/show_bug.cgi?id=436318. Our session management recovery engine is based on the [https://www.x.org/releases/X11R7.7/doc/libSM/xsmp.html X Session Management Protocol] and there is apparently currently no generic concept to do it on Wayland. But on Qt it's plugin-able and [https://wiki.gnome.org/Projects/SessionManagement/GnomeSession GNOME has had their own implementation] for some time.
+* Native Wayland windows cannot save and restore their window positions; KWin would need to do it: https://bugs.kde.org/show_bug.cgi?id=15329
-* Session-restored XWayland windows go on the wrong screens and virtual desktops: https://bugs.kde.org/show_bug.cgi?id=468252 + https://bugs.kde.org/show_bug.cgi?id=421870
+* "Spare Layouts" feature not implemented: https://bugs.kde.org/show_bug.cgi?id=455431
+* Using key combination shortcuts to type phrases into windows is not yet implemented: https://bugs.kde.org/show_bug.cgi?id=478219
+* No way to change the gamma or manually adjust the colors without generating or finding an appropriate ICC profile
-== KWin/compositing/window management ==
-* When the compositor crashes or restarts, non-Qt apps are killed — Qt apps do stay alive, and work is ongoing to make other apps survive as well; see see https://invent.kde.org/plasma/kwin/-/wikis/Restarting
-* Worse performance on weak Intel iGPUs: https://bugs.kde.org/show_bug.cgi?id=452119
-* Picture-in-Picture windows from web browsers get a Task Manager icon and do not stay on top: https://bugs.kde.org/show_bug.cgi?id=463288; requires https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/132 and adoption in apps using PiP windows (like web browsers)
-* Windows marked "Keep above other windows" cover up Meta+V Clipboard menu: https://bugs.kde.org/show_bug.cgi?id=462181
-* Previewing Window Switchers doesn't clean them up afterwards: https://bugs.kde.org/show_bug.cgi?id=374971
-* Dialog Parent effect isn't working: https://bugs.kde.org/show_bug.cgi?id=460819
-* Maximized XWayland windows have pixel gaps between screen edges when using a fractional scale factor: https://bugs.kde.org/show_bug.cgi?id=459373
 == Accessibility ==
-* Can't move pointer with numpad keys: https://bugs.kde.org/show_bug.cgi?id=478620
+* Can't move pointer with numpad keys: https://bugs.kde.org/show_bug.cgi?id=478620 - there's a [https://invent.kde.org/plasma/kwin/-/merge_requests/3362 pending Merge request]
-* Not all Sticky Keys options work: https://bugs.kde.org/show_bug.cgi?id=444335. Input on what is relevant/wanted there is welcome.
+* Slow Keys feature doesn't work: https://bugs.kde.org/show_bug.cgi?id=490826
+* Only Maliit is supported, which is not a proper accessibility-oriented virtual keyboard (e.g. no modifier keys or arrow keys)
-== Plasma ==
+== Graphics Tablet Support ==
-* XWayland applications may not autostart properly in a Wayland session due to various important environment variables not being set: https://bugs.kde.org/show_bug.cgi?id=469839
+* Can't switch between absolute and relative modes for the graphic tablet. [https://bugs.kde.org/show_bug.cgi?id=477898 Bug report] and Pending Merge Requests [https://invent.kde.org/plasma/kwin/-/merge_requests/4852 1] and [https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/1963 2].
-* XEmbedSNIProxy window eats input in top-left pixel of the screen: https://bugs.kde.org/show_bug.cgi?id=433079
+* Can't create multiple profiles for tablet configurations so artists can choose different profiles (e.g. different shortcuts and pen pressure) for different workflows like inking a comic or doing vector art: https://bugs.kde.org/show_bug.cgi?id=477671
-* Global Menu is not supported for non-Qt apps: https://bugs.kde.org/show_bug.cgi?id=424485
+* The UI for mapping tablet area and its buttons has a few issues compared to the UI in the X11 KCM: https://bugs.kde.org/show_bug.cgi?id=477750
-* Installed Chrome apps are grouped together with Chrome windows in Icon-Only Task Manager: https://bugs.kde.org/show_bug.cgi?id=358277
+* Graphic tablets may have a touch strip or ring, but in the Wayland KCM, you can't assign shortcuts to touch rings. Bug report: https://bugs.kde.org/show_bug.cgi?id=477752
-* Mirroring/"replica of" feature missing from KScreen KCM: https://bugs.kde.org/show_bug.cgi?id=460433 - workaround: drag a screen on top of another to mirror them
+* Some tablets allow users to switch between touch ring modes. For example, you can click a button and change the mode from one set of shortcuts like scrolling to another set of shortcuts, like changing hue or zooming in and out. This is not possible on Plasma Wayland: https://bugs.kde.org/show_bug.cgi?id=477787
-== NVIDIA ==
-* Transient graphical glitches after waking from sleep: https://bugs.kde.org/show_bug.cgi?id=448866
-* Transient graphical glitches after changing themes: https://bugs.kde.org/show_bug.cgi?id=470503
-== Upstream, not fixed yet ==
+== Upstream ==
-* With NVIDIA GPU, Plasma popups (e.g. Kickoff and KRunner) sometimes stops showing after opening / closing them a few times: https://bugs.kde.org/show_bug.cgi?id=455913 / https://codereview.qt-project.org/c/qt/qtwayland/+/503674
-* KWin doesn't differentiate numberpad shortcuts from above-the-letters shortcuts: https://bugs.kde.org/show_bug.cgi?id=413310 / https://bugreports.qt.io/browse/QTBUG-94892
+=== Waiting on new Wayland protocol ===
-* When using a Chromium-based browser in native Wayland mode, dragging an image to the desktop creates a sticky note out of it: https://bugs.kde.org/show_bug.cgi?id=449645
+* No session restore for native Wayland windows: https://bugs.kde.org/show_bug.cgi?id=436318 / https://invent.kde.org/plasma/kwin/-/issues/113. Our session management recovery engine is based on the [https://www.x.org/releases/X11R7.7/doc/libSM/xsmp.html X Session Management Protocol] and there is apparently currently no generic concept to do it on Wayland. But on Qt it's plugin-able and [https://wiki.gnome.org/Projects/SessionManagement/GnomeSession GNOME has had their own implementation] for some time. Possible workaround: Use Hibernation (Suspend To Disk) instead.
-* When dragging images from Firefox to the desktop, have to hold the drag 1 or more seconds over the desktop before releasing or else the desktop drop menu does not appear: https://bugs.kde.org/show_bug.cgi?id=448867 - https://codereview.qt-project.org/c/qt/qtwayland/+/518019
+* Picture-in-Picture windows from web browsers get a Task Manager icon and do not stay on top: https://bugs.kde.org/show_bug.cgi?id=463288; requires https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/132 and adoption in apps using PiP windows (like web browsers)
-* With screen scaling, cursor size is incorrect when hovering over native Wayland apps written with the GTK and Electron toolkits due to their lack of support for the cursor-shape-v1 protocol: https://bugs.kde.org/show_bug.cgi?id=451158. See also https://bugs.kde.org/show_bug.cgi?id=459161 for general cursor size issues.
+* Calibration/Profiling tools like DisplayCAL and argyllcms are used with [https://en.wikipedia.org/wiki/Tristimulus_colorimeter colorimeters] to ensure monitors are displaying color accurately. A portal (which has not been proposed yet) is required for these tools to be able to calibrate the monitor on Wayland and hand the ICC profile over to the compositor as discussed [https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/14#note_2125072 here]. Relevant DisplayCAL issue here: https://github.com/eoyilmaz/displaycal-py3/issues/133
-* Quick tile actions and window rules cannot override window's minimum size if needed as they can on X11: https://bugs.kde.org/show_bug.cgi?id=434615 / https://codereview.qt-project.org/c/qt/qtwayland/+/524982
+* Global Menu is not supported for non-Qt apps: https://bugs.kde.org/show_bug.cgi?id=424485. Needed wayland protocol: see https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/52
-* Wrong app icon in Task Switcher for LibreOffice apps: https://bugreports.qt.io/browse/QTBUG-77182
-* When dragging files, to trigger a specific result, you have to hold down a modifier key *before* you start dragging, not after: https://bugs.kde.org/show_bug.cgi?id=423031 - https://codereview.qt-project.org/c/qt/qtwayland/+/525413
+=== GTK ===
-* QtQuick windows exhibit jittery resizing: https://bugs.kde.org/show_bug.cgi?id=477900 - https://codereview.qt-project.org/c/qt/qtwayland/+/503676
+* With screen scaling, cursor size is incorrect when hovering over native Wayland apps written with the GTK toolkit due to its lack of support for the cursor-shape-v1 protocol: https://bugs.kde.org/show_bug.cgi?id=451158. See also https://bugs.kde.org/show_bug.cgi?id=459161 for general cursor size issues.
+* When the compositor crashes or restarts, non-Qt apps are killed — Qt apps do stay alive, and work is ongoing to make other apps survive as well; see see https://invent.kde.org/plasma/kwin/-/wikis/Restarting
+=== NVIDIA ===
+* Worse performance on external monitor connected to NVIDIA GPU when default GPU is Intel: https://bugs.kde.org/show_bug.cgi?id=452219
-== Fixed upstream ==
-These are fixed upstream but neither backportable nor backported to Qt 5.
-* plasmashell crashes when hovering or clicking items on the Panel due to "zwp_linux_buffer_params_v1.add" protocol error: https://bugs.kde.org/show_bug.cgi?id=447717; fixed in Qt 6.3
+== Fixed in an upcoming version ==
-* Wrong positioning of context menu in multiple screens: https://bugs.kde.org/show_bug.cgi?id=436016 / https://bugreports.qt.io/browse/QTBUG-85297; fixed in Qt 6.4
+* QtQuick windows exhibit jittery resizing: https://bugs.kde.org/show_bug.cgi?id=477900 - https://codereview.qt-project.org/c/qt/qtwayland/+/591892 - Fixed in Qt 6.9.0
-* When using a fractional scale factor, native Wayland apps are slightly blurry: https://bugs.kde.org/show_bug.cgi?id=446674; fixed in Qt 6.6
-* Changing scale causes Qt-based software to become blurry until restarted: https://bugreports.qt.io/browse/QTBUG-78327; fixed in Qt 6.6
-* Apps using QDesktopServices::openUrl()/Qt.openUrlExternally don't raise existing windows in the activated app: https://codereview.qt-project.org/c/qt/qtwayland/+/321246 and https://codereview.qt-project.org/c/qt/qtbase/+/447556; fixed in Qt 6.5
-* QMenus appear as standalone windows when opened using a stylus: https://bugreports.qt.io/browse/QTBUG-111130; fixed in Qt 6.6 - https://github.com/qt/qtwayland/commit/59fae923d72eaf640035237ae6ddb1ccfeba2210
-* After dragging-and-dropping a Favorites app in Kickoff, next click anywhere launches that thing: https://bugs.kde.org/show_bug.cgi?id=444489 - Fixed in Qt 6.5
-* When the compositor crashes or restarts, Qt apps are killed - Fixed in Qt 6.6
-* In multi-monitor setups with at least one scaled display, Context menus have items which are invisible until hovered: https://bugreports.qt.io/browse/QTBUG-93380 - Fixed in Qt 6.6
-* When logging into a Wayland session after having previously used the X11 session, all outputs have their scales reset to 100%: https://bugs.kde.org/show_bug.cgi?id=433460
-* Context menu text becomes is blurry until interacted with on scaled displays in multi-display setups: https://bugs.kde.org/show_bug.cgi?id=451259
-* Some Plasma icons are blurry until interacted with mixed-dpi multi-screen setup: https://bugs.kde.org/show_bug.cgi?id=460493
-* QDockWidget does not visually move when moving and is not re-dockable when detached: https://bugreports.qt.io/browse/QTBUG-87332 - fixed in Qt 6.6
-* Plasma and apps crash when dragging anything into another app: https://bugs.kde.org/show_bug.cgi?id=470925 - fixed in Qt 6.6
-* Unusably poor performance on external screens with NVIDIA Optimus setup: https://bugs.kde.org/show_bug.cgi?id=452219 - NVidia will release a driver that fixes this before Plasma 6.0 is released