Plasma/Wayland Known Significant Issues: Difference between revisions

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