Plasma/5.9 Errata

Known issues in the Plasma 5.9 release.

Freezes Using Qt 5.6.0

When using Qt 5.6.0 Plasma loads itself incompletely and with long delays. Deadlocks occur in kded5. Use Qt 5.7 instead.

Intel GPUs

We recommend the Xorg modesettings ddx for use with Intel hardware. This is the default in many distributions nowadays. Using the Intel Xorg ddx can result in various graphical glitches and freezes.

Wayland

Integration features in Plasma still missing or incomplete (e.g. Pager applet)
No Drag and Drop from X11 to Wayland windows and vice versa
Support for per-screen DPI is missing
No support for primary selection (middle-click to paste)
No support for tablet devices (e.g. wacom tablets)
No clipboard history (e.g. klipper and clipboard plasmoid)
XWayland older than 1.19 lacks features or has bugs, we recommend XWayland 1.19
No focus stealing prevention for Wayland windows
No window rules support for Wayland windows
(Multi-)Screen configuration only partially implemented
QtWebEngine crashes when used on Wayland Qt Bug 55384
QtWayland: No support for animated mouse cursors Qt Bug 48181
QtWayland: Dropdown windows closes on key presses Qt Bug 55403
QtWayland: Missing compose key support Qt Bug 54792
QtWayland: Key repeat settings ignored Qt Bug 55615
QtWayland: Sub-menus may be placed incorrectly Qt Bug 50458
GTK: windows don't have a minimize and maximize button
GTK: windows are incorrectly placed
GTK: latest version requires newer xdg-shell version which is not yet supported

Missing features

KWin does not provide window tabs
Tooltips on window decoration buttons

Configuration changes

Environment variables and shutdown scripts are now sourced from ~/.config/plasma-workspace/env and ~/.config/plasma-workspace/shutdown, respectively. Existing scripts from Plasma 4 should be moved there.