Plasma/Wayland Known Significant Issues: Difference between revisions

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== KWin/compositing/window management ==
== KWin/compositing/window management ==
No cross-app window activation/focus protocol. As a result, windows don't get brought forward when activated by another app: https://bugs.kde.org/show_bug.cgi?id=424795
* No cross-app window activation/focus protocol. As a result, windows don't get brought forward when activated by another app: https://bugs.kde.org/show_bug.cgi?id=424795
 
* 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).
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).
* 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
Task Switchers are sometimes black and unusable: https://bugs.kde.org/show_bug.cgi?id=415798
* "Pin/keep open" functionality for Plasma applets does not work: https://bugs.kde.org/show_bug.cgi?id=400317
 
* Focus is inconsistent for XWayland apps: https://bugs.kde.org/show_bug.cgi?id=400987
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
 
KDE app windows don't remember maximized state: https://bugs.kde.org/show_bug.cgi?id=409919
 
Can't dismiss a popup by clicking another window of the same application: https://bugreports.qt.io/browse/QTBUG-83972


== Remote control support incomplete ==
== Remote control support incomplete ==
Our screencasting API handles remote video streaming, but there is no API for remote input, so things like TeamViewer have no way to work (and would need to be ported to use those APIs once they exist).
* Our screencasting API handles remote video streaming, but there is no API for remote input, so things like TeamViewer have no way to work (and would need to be ported to use those APIs once they exist).
 
== 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.
 


== Input ==
== 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 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.
No XModmap; we lack a functionality like XModmap to remap keys.
* Can't type accented characters in native Wayland Qt apps: https://bugs.kde.org/show_bug.cgi?id=411729
 


== Plasma ==
== 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.
* 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 activities.
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.
* Session sometimes crashes when changing Global Themes: https://bugs.kde.org/show_bug.cgi?id=422424
 
No activities.
 
Keyboard Layout indicator system tray item doesn't work: https://bugs.kde.org/show_bug.cgi?id=390079


== Drag and Drop issues ==
== Drag and Drop issues ==
 
* Session crashes when hovering over task manager after dragging an entry in task manager to another virtual desktop: https://bugs.kde.org/show_bug.cgi?id=418683
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
* plasmashell crashes when dragging a file from Dolphin over a panel: https://bugs.kde.org/show_bug.cgi?id=398440
 
* Cursor sometimes erroneously displays "no drag possible" icon even when it is possible: https://bugs.kde.org/show_bug.cgi?id=383794
Drag and drop on Wayland: Wrong drop destination on drag'n drop https://bugs.kde.org/show_bug.cgi?id=422414
* Can't abort drag-and-drop with the Esc key: https://bugs.kde.org/show_bug.cgi?id=405267
 
https://bugs.kde.org/show_bug.cgi?id=390321
 
https://bugs.kde.org/show_bug.cgi?id=400014
 
https://bugs.kde.org/show_bug.cgi?id=383794
 
https://bugs.kde.org/show_bug.cgi?id=405267
 
https://bugs.kde.org/show_bug.cgi?id=389261
 
reproducible (on my sysyem at least) plasma/kwin crashes
 
https://bugs.kde.org/show_bug.cgi?id=398440
 
https://bugs.kde.org/show_bug.cgi?id=418683
 
https://bugs.kde.org/show_bug.cgi?id=420949
 
https://bugs.kde.org/show_bug.cgi?id=414834
 
https://bugs.kde.org/show_bug.cgi?id=419017

Revision as of 09:16, 28 December 2020

This page tracks the Wayland showstoppers throughout the stack.

KWin/compositing/window management

Remote control support incomplete

  • Our screencasting API handles remote video streaming, but there is no API for remote input, so things like TeamViewer have no way to work (and would need to be ported to use those APIs once they exist).

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.
  • Can't type accented characters in native Wayland Qt apps: https://bugs.kde.org/show_bug.cgi?id=411729

Plasma

  • Session restoring does not include Wayland native windows. Our sessions management recover 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 according to their wiki an own implementation for some time.
  • No activities.
  • Session sometimes crashes when changing Global Themes: https://bugs.kde.org/show_bug.cgi?id=422424

Drag and Drop issues