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Update KDE page with more detailed information post install

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unman 2025-06-05 15:18:41 +00:00
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user/advanced-topics/kde.md
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@ -8,17 +8,37 @@ ref: 176
title: KDE (desktop environment)
---
Installation
------------
## Installation
Prior to R3.2, KDE was the default desktop environment in Qubes. Beginning with
R3.2, however, [XFCE is the new default desktop environment](/doc/releases/3.2/release-notes/). Nonetheless, it is
still possible to install KDE by issuing this command in dom0:
R3.2, however, [XFCE is the new default desktop environment](/doc/releases/3.2/release-notes/).
Nonetheless, it is still possible to install KDE by issuing this command in dom0:
```shell_session
$ sudo qubes-dom0-update kde-settings-qubes
```
You may notice some warnings and errors in the installation - it is safe to ignore these.
After the installation is complete log out.
At the top of the log in screen is a small icon with *X* on it - if you click on it you will see choices between Xfce and
Plasma. Select the Plasma(X11) option, and log in - you will see that Plasma (the KDE desktop environment) loads.
KDE is very customisable, and there is a range of widgets to use.
If you want to use the Menu widget, then you must edit `/etc/X11/xinit/xinitrc.d/55xfce-qubes.sh` as follows:
```
#!/usr/bin/sh
# Use Qubes provided menu instead of default XFCE one
if [ "$XDG_SESSION_DESKTOP" = "KDE" ]; then
XDG_MENU_PREFIX="kf5-"
else
XDG_MENU_PREFIX="qubes-"
fi
export XDG_MENU_PREFIX
```
This allows you to edit the menu as you will. When editing the Menu *DO NOT use the option under "Edit->Restore to System Menu"*
### Login manager
You can also change your default login manager (lightdm) to the new KDE default: sddm
* first you need to edit the `/etc/sddm.conf` to make sure if the custom X parameter is set according to Qubes needs:
@ -44,8 +64,8 @@ You can also change your default login manager (lightdm) to the new KDE default:
If you encounter performance issues with KDE, try switching back to LightDM.
Window Management
-----------------
## Window Management
You can set each window's position and size like this:
@ -67,14 +87,12 @@ You can also use `kstart` to control virtual desktop placement like this:
kstart --desktop 3 --windowclass <vm_name> -q --tray -a <vm_name> '<run_program_command>'
~~~
(Replace "3" with whichever virtual desktop you want the window to be
on.)
(Replace "3" with whichever virtual desktop you want the window to be on.)
This can be useful for creating a simple shell script which will set up your
workspace the way you like.
Removal
------------
## Removal
If you decide to remove KDE do **not** use `dnf remove @kde-desktop-qubes`. You will almost certainly break your system.