Plasma/Wayland Known Significant Issues: Difference between revisions

Latest revision as of 16:42, 10 April 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.

Note that to actually drop X11 support, even more is needed; see https://invent.kde.org/plasma/kwin/-/issues/202.

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 - in progress with https://invent.kde.org/plasma/kwin/-/merge_requests/7348
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

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

No session restore for native Wayland windows: https://bugs.kde.org/show_bug.cgi?id=436318 / https://invent.kde.org/plasma/kwin/-/issues/113. Preliminary support is implemented in Plasma 6.4, and toolkits and apps will need to opt into supporting it.

@@ Line 1: / Line 1: @@
-This page tracks the Wayland showstoppers throughout the stack.
+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]].
-== KWin/compositing/window management ==
+It is the Wayland-specific companion to [[Plasma/X11 Known Significant Issues]].
-No vertical / horizontal maximize of Wayland native clients. KWin uses NetWM modes internally to do this. Works with Xwayland clients. Would also work for Wayland clients, just the state cannot be exported to Wayland (c.f. Quick tiling).
-Task Switchers are sometimes black and unusable: https://bugs.kde.org/show_bug.cgi?id=415798
+Note that to actually ''drop'' X11 support, even more is needed; see https://invent.kde.org/plasma/kwin/-/issues/202.
-XWayland windows are upscaled and look blurry and ugly in HiDPI mode: https://bugs.kde.org/show_bug.cgi?id=389191
-Cursor lags under high CPU load: https://bugs.kde.org/show_bug.cgi?id=421131
+== 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
-Cursor is small when hovering over Firefox: https://bugs.kde.org/show_bug.cgi?id=421133
+* "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
-KDE app windows don't remember maximized state: https://bugs.kde.org/show_bug.cgi?id=409919
+* No way to change the gamma or manually adjust the colors without generating or finding an appropriate ICC profile
-Can't dismiss a popup by clicking another window of the same application: https://bugreports.qt.io/browse/QTBUG-83972
-== No remote support ==
-We don't have an API yet for remote support. Even if we had one, things like TeamViewer would not work any more ('''Partly fixed''' since we now have an API for screencast using a separate KWayland interface. There is also already support in xdg-desktop-portals for convenience of other apps and general support in Flatpaks. What's still missing is an API for remote input.)
-== NVIDIA ==
-The NVIDIA blob uses a custom EGL extension which [https://phabricator.kde.org/D18570 Plasma 5.16 added support] for. It requires setting the ''KWIN_DRM_USE_EGL_STREAMS=1'' environment variable to activate.
-Other aspects of the "Wayland experience" with NVIDIA such as XWayland compatibility are outside of our influence.
-'''Partly fixed:''' Requires manual activation.
-== Clipboard ==
-No clipboard manager protocol (for e.g. Klipper and clipboard plasmoid) and no clipboard sync with KDE Connect: https://phabricator.kde.org/T4449 (will be fixed with https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/1)
-== Input ==
-No configurable mouse gestures; X has the ability to accept fake input events to allow programs such as Easystroke. With the new security model of Wayland, such a program would need to be part of the compositor.
-No XModmap; we lack a functionality like XModmap to remap keys.
-== Plasma ==
-Session restoring does not include Wayland native windows. 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 GNOME has according to [https://wiki.gnome.org/Projects/SessionManagement/GnomeSession their wiki] an own implementation for some time.
-No window thumbnails; we don't yet have an API for this.
-No window move on empty area in breeze; This broke with switch to XdgShellV6. Needs new API added to Qt (native interface), KWayland and Breeze.
-No activities.
-Keyboard Layout indicator system tray item doesn't work: https://bugs.kde.org/show_bug.cgi?id=390079
-FIXED in Application 20.08: Top panel overlaps Yakuake: https://bugs.kde.org/show_bug.cgi?id=408468
-== Drag and Drop issues ==
+== 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)
-Dragging-and-dropping a file to https://imgur.com in Firefox brings down the whole session: https://bugs.kde.org/show_bug.cgi?id=421130
-https://bugs.kde.org/show_bug.cgi?id=422414
+== Graphics Tablet Support ==
+* 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].
+* 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 - in progress with https://invent.kde.org/plasma/kwin/-/merge_requests/7348
+* 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
-https://bugs.kde.org/show_bug.cgi?id=390321
-https://bugs.kde.org/show_bug.cgi?id=400014
+== 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
-https://bugs.kde.org/show_bug.cgi?id=383794
-https://bugs.kde.org/show_bug.cgi?id=405267
+== Upstream ==
-https://bugs.kde.org/show_bug.cgi?id=389261
+=== Waiting on new Wayland protocol ===
+* 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 [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
-reproducible (on my sysyem at least) plasma/kwin crashes
+=== 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
-https://bugs.kde.org/show_bug.cgi?id=398440
+=== 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
-https://bugs.kde.org/show_bug.cgi?id=418683
+=== GStreamer ===
+* GStreamer with OpenGL creates an empty "OpenGL Renderer" window on Wayland: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2997
-https://bugs.kde.org/show_bug.cgi?id=420949
+=== NVIDIA ===
+* Worse performance on external monitor connected to NVIDIA GPU when default GPU is Intel: https://bugs.kde.org/show_bug.cgi?id=452219
-https://bugs.kde.org/show_bug.cgi?id=414834
-https://bugs.kde.org/show_bug.cgi?id=419017
+== Fixed in an upcoming version ==
+* No session restore for native Wayland windows: https://bugs.kde.org/show_bug.cgi?id=436318 / https://invent.kde.org/plasma/kwin/-/issues/113. Preliminary support is implemented in Plasma 6.4, and toolkits and apps will need to opt into supporting it.