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Known issues in the Plasma 5.9 release.
Known issues in the Plasma 5.9 release.
== Intel GPUs ==
We have received many reports on problems with running Plasma on hardware with graphic cards provided by Intel. We are sorry for the inconvenience and are sorry that we are not able to provide a product which is on par on all systems. Our aim is it to have our software run well on all hardware, but we cannot prevent errors in the underlying stack. Our software was hit by surprise by the issues which are from our view regressions in the underlying driver stack as previous versions worked fine. We would have liked to provide workarounds for these issues which can only be fixed by Intel. Unfortunately we were not able to find a satisfying solution. Given that we present here a list of known workaround which can be tried by affected users.


We encourage our users who experience problems to come to forum.kde.org so that we can help with our knowledge and to help us gather more information to provide better workarounds.
== Freezes Using Qt 5.6.0 ==


=== Random application crashes===
*http://bugreports.qt.io/browse/QTBUG-51676
This issue is caused by an [http://bugs.freedesktop.org/show_bug.cgi?id=86281 Intel driver bug]. A reported workaround is to change AccelMethod to UXA in the xorg configuration and restarting the system. Please refer to documentation provided by your distribution on how to change this.
*https://bugs.kde.org/show_bug.cgi?id=359611
When using Qt 5.6.0 Plasma loads itself incompletely and with long delays. Deadlocks occur in kded5.
Use Qt 5.6.1 or Qt 5.7.1 instead.


=== Heavy rendering artifacts===
== Plasma Discover With Qt 5.7.1 ==
Users told us that enabling DRI3 in xorg configuration can circumvent this problem. An alternative can be to use the new OpenGL ES backend in KWin which also seems to circumvent the problem or disable compositing completely.


=== Modesettings ===
Discover [https://bugs.kde.org/show_bug.cgi?id=375083 375083] crashes with Qt 5.7, use Qt 5.7.1 instead.
To circumvent the issues mentioned above it's also possible to switch the Xorg ddx driver from Intel to modesettings. Many distributions do so by default nowadays.
 
== Intel GPUs ==
We recommend the Xorg modesetting 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==
==Wayland==
* '''Not functional with Qt 5.8.0''' (see [https://bugreports.qt.io/browse/QTBUG-58423 Qt Bug 58423])
* Integration features in Plasma still missing or incomplete (e.g. Pager applet)
* Integration features in Plasma still missing or incomplete (e.g. Pager applet)
* No Drag and Drop from X11 to Wayland windows and vice versa
* No Drag and Drop from X11 to Wayland windows and vice versa
* Support for per-screen DPI is missing
* Support for per-screen DPI is missing
* Multiple issues with Qt 5.8.0 (weird plasma behavior, missing window decorations) [https://bugreports.qt.io/browse/QTBUG-58423 Qt Bug 58423]
* No support for primary selection (middle-click to paste)
* No support for primary selection (middle-click to paste)
* No support for relative pointer events
* No support for pointer confinement
* No support for tablet devices (e.g. wacom tablets)
* No support for tablet devices (e.g. wacom tablets)
* No clipboard history (e.g. klipper and clipboard plasmoid)
* No clipboard history (e.g. klipper and clipboard plasmoid)
* XWayland older than 1.18 lacks features, no touch, no updates on screen hot plug. Recommendation is XWayland 1.18.4 or 1.19
* XWayland older than 1.19 lacks features or has bugs, we recommend XWayland 1.19
* X11 windows don't have an icon in the task bar
* Several effects break multi-screen rendering
* No focus stealing prevention for Wayland windows
* No focus stealing prevention for Wayland windows
* No window rules support for Wayland windows
* No window rules support for Wayland windows
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* GTK: windows don't have a minimize and maximize button
* GTK: windows don't have a minimize and maximize button
* GTK: windows are incorrectly placed
* GTK: windows are incorrectly placed
* GTK: latest version requires newer xdg-shell version which is not yet supported


== Missing features ==
== Missing features ==
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== Configuration changes ==
== 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.
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.
== Plasma Workspace ksmserver hangs on broken autostart files ==
* In 5.9.5 release Plasma Workspace's ksmserver hangs when attempting to load a broken autostart file [https://bugs.kde.org/show_bug.cgi?id=379254 Bug 379254].  Use the updated 5.9.5.1 tar.

Latest revision as of 09:49, 28 April 2017

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 5.6.1 or Qt 5.7.1 instead.

Plasma Discover With Qt 5.7.1

Discover 375083 crashes with Qt 5.7, use Qt 5.7.1 instead.

Intel GPUs

We recommend the Xorg modesetting 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

  • Not functional with Qt 5.8.0 (see Qt Bug 58423)
  • 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
  • Multiple issues with Qt 5.8.0 (weird plasma behavior, missing window decorations) Qt Bug 58423
  • 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.

Plasma Workspace ksmserver hangs on broken autostart files

  • In 5.9.5 release Plasma Workspace's ksmserver hangs when attempting to load a broken autostart file Bug 379254. Use the updated 5.9.5.1 tar.
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