(Fractional scaling is now implemented.)
(Drag and Drop issues)
 
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This page tracks the Wayland showstoppers through out the stack
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This page tracks the Wayland showstoppers throughout the stack.
  
== General issues ==
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== KWin/compositing/window management ==
=== No vertical / horizontal maximize of Wayland native clients ===
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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).
KWin uses NetWM modes internally to do this. Works with Xwayland clients.
 
  
=== No Drag and Drop between Wayland native and Xwayland clients ===
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Task Switchers are sometimes black and unusable: https://bugs.kde.org/show_bug.cgi?id=415798
From Wayland to Xwayland ignores. From Xwayland to Wayland falls through.
 
  
=== No remote support ===
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XWayland windows are upscaled and look blurry and ugly in HiDPI mode: https://bugs.kde.org/show_bug.cgi?id=389191
We don't have an API yet for remote support. Even if we had 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.
+
Cursor lags under high CPU load: https://bugs.kde.org/show_bug.cgi?id=421131
  
=== NVIDIA ===
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Cursor is small when hovering over Firefox: https://bugs.kde.org/show_bug.cgi?id=421133
The NVIDIA blob is not supported as it uses a custom EGL extension. It would require additional code just for NVIDIA. On the other hand many users are on NVIDIA. Further information: [https://blog.martin-graesslin.com/blog/2016/09/to-eglstream-or-not/ To EGL Stream or Not] and [https://blog.martin-graesslin.com/blog/2017/10/plasmawayland-and-nvidia-2017-edition/ Plasma/Wayland and NVIDIA – 2017 edition]
+
 
 +
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)
  
=== QT_QPA_PLATFORM ===
 
QT_QPA_PLATFORM is set to wayland breaking any application which has Qt included (e.g. appimages, proprietary software) and doesn't have wayland QPA.
 
  
'''Fixed'''
 
by not setting the variable in system, but let every app decide on itself. With 5.11 setting this variable is not needed at all anymore, because it autodetects the windowing system.
 
  
 
== Input ==
 
== Input ==
=== No (wacom) Tablet support ===
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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.
KWin lacks integration the tablet support from libinput. Also KWayland lacks wrapping the API for it.
 
  
=== No configurable gestures ===
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No XModmap; we lack a functionality like XModmap to remap keys.
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. See [https://github.com/xkbcommon/libxkbcommon/issues/40 xkbcommon-issue40] --> Explain how this issue is related?
 
  
 
== Plasma ==
 
== Plasma ==
=== Virtual Desktops ===
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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.
We don't have an API yet for virtual desktops, so pager is not working
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 +
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
  
=== Native Wayland windows are not restored ===
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== Drag and Drop issues ==
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 ===
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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
We don't have an API yet for window thumbnails.
 
  
=== No window move on empty area in breeze ===
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Drag and drop on Wayland: Wrong drop destination on drag'n drop https://bugs.kde.org/show_bug.cgi?id=422414
Broke with switch to XdgShellV6. Needs new API added to Qt (native interface), KWayland and Breeze.
 
  
=== Logout ===
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https://bugs.kde.org/show_bug.cgi?id=390321
[https://bugs.kde.org/show_bug.cgi?id=372789 There's a crash I know] (but fixing properly breaks X). [https://github.com/sddm/sddm/issues/897 Might be more stuff with SDDM], needs investigation
 
  
=== No activities ===
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https://bugs.kde.org/show_bug.cgi?id=400014
Activities are probably not a must-have feature, but anyway this is annoying for those who got accustomed to them on X11.
 
  
== Qt ==
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https://bugs.kde.org/show_bug.cgi?id=383794
=== No animated cursors ===
 
See [https://bugreports.qt.io/browse/QTBUG-48181 QTBUG-48181]
 
  
=== wl_proxy_create_wrapper  ===
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https://bugs.kde.org/show_bug.cgi?id=405267
http://bugs.kde.org/381630
 
  
'''Fixed''' in Qt 5.9.5
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https://bugs.kde.org/show_bug.cgi?id=389261
  
=== Key repeat not working ===
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reproducible (on my sysyem at least) plasma/kwin crashes
See [https://bugreports.qt.io/browse/QTBUG-55615 QTBUG-55615]
 
  
=== Compose key not working ===
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https://bugs.kde.org/show_bug.cgi?id=398440
Will be fixed in Qt 5.11, [https://wiki.qt.io/Qt_5.11_Release expected May 2018]. See [https://bugreports.qt.io/browse/QTBUG-54792 QTBUG-54792]
 
  
'''Fixed''' in Qt 5.11
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https://bugs.kde.org/show_bug.cgi?id=418683
  
=== No tablet support ===
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https://bugs.kde.org/show_bug.cgi?id=420949
QtWayland does not yet support the tablet API. So even if KWin had support Qt would not be able to use it.
 
  
=== Fullscreen does not work ===
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https://bugs.kde.org/show_bug.cgi?id=414834
see [https://bugreports.qt.io/browse/QTBUG-63748 QTBUG-63748]
 
  
'''Fixed''' in Qt 5.12
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https://bugs.kde.org/show_bug.cgi?id=419017

Latest revision as of 08:55, 10 July 2020

This page tracks the Wayland showstoppers throughout the stack.

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).

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

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 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 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 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

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

Drag and drop on Wayland: Wrong drop destination on drag'n drop https://bugs.kde.org/show_bug.cgi?id=422414

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


This page was last edited on 10 July 2020, at 08:55. Content is available under Creative Commons License SA 4.0 unless otherwise noted.