Plasma/Wayland Known Significant Issues: Difference between revisions

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== KWin/compositing/window management ==
== KWin/compositing/window management ==
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 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).
Task Switchers are sometimes black and unusable: https://bugs.kde.org/show_bug.cgi?id=415798
* 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
XWayland windows are upscaled and look blurry and ugly in HiDPI mode: https://bugs.kde.org/show_bug.cgi?id=389191
* "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
Cursor lags under high CPU load: https://bugs.kde.org/show_bug.cgi?id=421131
 
Cursor is small when hovering over Firefox: https://bugs.kde.org/show_bug.cgi?id=421133
 
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
 
 
== 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)
 
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
 
 
== Screenshots ==
Spectacle is annoying and missing features on Wayland:
* Always requires a click to take a screenshot (will be fixed with https://phabricator.kde.org/D29407)
* Timer functionality doesn't work: https://bugs.kde.org/show_bug.cgi?id=414532 (will be fixed with https://phabricator.kde.org/D29408)
* Can't capture context menus: https://bugs.kde.org/show_bug.cgi?id=384637
* Active Window mode doesn't work: https://bugs.kde.org/show_bug.cgi?id=386271
* Global shortcuts to take screenshots don't work: https://bugs.kde.org/show_bug.cgi?id=407489 (will be fixed with https://phabricator.kde.org/D29408)


== 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 ==
== 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 thumbnails; we don't yet have an API for this.
* Session sometimes crashes when changing Global Themes: https://bugs.kde.org/show_bug.cgi?id=422424
 
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.
 
Panel remains on top of full screen video: https://bugs.kde.org/show_bug.cgi?id=421132
 
Keyboard Layout indicator system tray item doesn't work: https://bugs.kde.org/show_bug.cgi?id=390079


Top panel overlaps Yakuake: https://bugs.kde.org/show_bug.cgi?id=408468
== 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
* 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
* Can't abort drag-and-drop with the Esc key: https://bugs.kde.org/show_bug.cgi?id=405267

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