Plasma/Wayland Known Significant Issues: Difference between revisions

Latest revision as of 15:44, 6 March 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

KDE applications

Cross-app activation/window raising doesn't work for certain apps and use cases:
- Opening files using command-line binaries in Konsole: https://bugs.kde.org/show_bug.cgi?id=442265
- Opening files from KRunner: https://bugs.kde.org/show_bug.cgi?id=475706
- Opening the Trash from a widget when Dolphin is already running: https://bugs.kde.org/show_bug.cgi?id=499936

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

Qt

Sub-menus are mis-positioned when parent menu is close to a screen edge: https://bugs.kde.org/show_bug.cgi?id=500584 / https://bugreports.qt.io/browse/QTBUG-124810 + https://bugreports.qt.io/browse/QTBUG-99618

GTK

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

GStreamer

GStreamer with OpenGL creates an empty "OpenGL Renderer" window on Wayland: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2997

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
Menubar in GTK apps does not behave correctly: https://bugs.kde.org/show_bug.cgi?id=490833 - fixed in GTK 3.24.49

@@ Line 1: / Line 1: @@
-This page tracks the Wayland showstoppers throughout the stack. Showstoppers are major bugs, or missing features affecting the Wayland session but not the X11 session. 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 ==
-* Applications don't prompt to save unsaved work, causing data loss: https://bugs.kde.org/show_bug.cgi?id=461176
-* Session restoring does not include Wayland native windows: https://bugs.kde.org/show_bug.cgi?id=436318. Our sessions management recover 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.
 == KWin/compositing/window management ==
-* When the compositor crashes or restarts, non-Qt apps are killed — work is ongoing to fix this, see https://invent.kde.org/plasma/kwin/-/wikis/Restarting
+* 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
-* Not all Sticky Keys options work: https://bugs.kde.org/show_bug.cgi?id=444335
+* "Spare Layouts" feature not implemented: https://bugs.kde.org/show_bug.cgi?id=455431
-* Visual line glitches with certain fractional scale factors: https://bugs.kde.org/show_bug.cgi?id=465158
+* Using key combination shortcuts to type phrases into windows is not yet implemented: https://bugs.kde.org/show_bug.cgi?id=478219
-* Windows marked "keep on top" cover up panel widget pop-ups and clipboard history menu: https://bugs.kde.org/show_bug.cgi?id=466844
+* No way to change the gamma or manually adjust the colors without generating or finding an appropriate ICC profile
-* Context menu text and Plasma icons are sometimes blurred until interacted with on scaled screens with mixed scale screen setup: https://bugs.kde.org/show_bug.cgi?id=451259 + https://bugs.kde.org/show_bug.cgi?id=460493
+== Accessibility ==
+* 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]
+* 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 ==
-* Saving and restoring activities does not work
+* 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 broken 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
-* 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
+* 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
-* Text copied from PDFs in Okular can't be pasted once Okular quits: https://bugs.kde.org/show_bug.cgi?id=468422
+* 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 issues, or KDE issues blocked by required upstream changes ==
-* No color management or support for changing Gamma: https://bugs.kde.org/show_bug.cgi?id=439135, https://bugs.kde.org/show_bug.cgi?id=439135, https://invent.kde.org/plasma/kwin/-/issues/11; requires https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/14 and adoption in KWin
+== KDE applications ==
+* Cross-app activation/window raising doesn't work for certain apps and use cases:
+** Opening files using command-line binaries in Konsole: https://bugs.kde.org/show_bug.cgi?id=442265
+** Opening files from KRunner: https://bugs.kde.org/show_bug.cgi?id=475706
+** Opening the Trash from a widget when Dolphin is already running: https://bugs.kde.org/show_bug.cgi?id=499936
+== 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 [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.
 * 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)
-* QDockWidget does not visually move when moving and is not re-dockable when detached: https://bugreports.qt.io/browse/QTBUG-87332
+* 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
+* 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
+=== Qt ===
+* Sub-menus are mis-positioned when parent menu is close to a screen edge: https://bugs.kde.org/show_bug.cgi?id=500584 / https://bugreports.qt.io/browse/QTBUG-124810 + https://bugreports.qt.io/browse/QTBUG-99618
+=== GTK ===
+* 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
+=== GStreamer ===
+* GStreamer with OpenGL creates an empty "OpenGL Renderer" window on Wayland: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2997
-== Specifically NVIDIA issues ==
+=== NVIDIA ===
-* Sometimes Plasma fails to launch with Wayland and NVidia (kwin_scene_opengl: Creating the OpenGL rendering failed: "query surface failed"): https://bugs.kde.org/show_bug.cgi?id=440397
+* Worse performance on external monitor connected to NVIDIA GPU when default GPU is Intel: https://bugs.kde.org/show_bug.cgi?id=452219
-* Plasma Panels sometime visually freeze: https://bugs.kde.org/show_bug.cgi?id=469016
-* All screen content freezes when Night Color is activated: https://bugs.kde.org/show_bug.cgi?id=468895
-* Also Night Color just doesn't work at all on Plasma Wayland with NVIDIA: https://bugs.kde.org/show_bug.cgi?id=450327
-* Ghost trails/graphical glitches when waking from sleep: https://bugs.kde.org/show_bug.cgi?id=440397
-* After waking NVIDIA-GPU-using system from sleep, sometimes text is partially or entirely missing from from QtQuick-based apps: https://bugs.kde.org/show_bug.cgi?id=451293
-== Quality-of-life issues that aren't fully showstoppers ==
-* Installed Chrome apps are grouped together with Chrome windows in Icon-Only Task Manager: https://bugs.kde.org/show_bug.cgi?id=358277
-* Multiple Chrome windows on different virtual desktops causes heavy stuttering/freezing in Chrome. Does not occur if the multiple windows are on the same virtual desktop. Similar bug report filed for Ubuntu/Gnome/Wayland here: https://bugs.launchpad.net/ubuntu/+source/xwayland/+bug/1906792
-* 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
-* Windows that *are* session-restored 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
-* Maximized XWayland apps leave pixel gaps when using a fractional scaling factor: https://bugs.kde.org/show_bug.cgi?id=459373
-* Wrong app icon in Task Switcher for LibreOffice apps: https://bugreports.qt.io/browse/QTBUG-77182
-== Fixed already in Qt 6 but not backportable nor backported to Qt 5 ==
+== Fixed in an upcoming version ==
-* 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
+* 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
-* 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
+* Menubar in GTK apps does not behave correctly: https://bugs.kde.org/show_bug.cgi?id=490833 - fixed in GTK 3.24.49
-* 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
-* When the compositor crashes or restarts, Qt apps are killed - Fixed in Qt 6.5
-* 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 using scaling, logging into Wayland session after X11 session resets scale to 1: https://bugs.kde.org/show_bug.cgi?id=433460