qubes-doc/customization/kde.md

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---
layout: doc
title: KDE
permalink: /doc/kde/
redirect_from: /en/doc/kde/
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---
Using KDE in dom0
=================
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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](https://github.com/QubesOS/qubes-issues/issues/2119). Nonetheless, it is
still possible to install KDE by issuing this command in dom0:
$ sudo qubes-dom0-update @kde-desktop-qubes
You can also change your default login manager (lightdm) to the new KDE default: sddm
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* first you need to edit the `/etc/sddm.conf` to make sure if the custom X parameter is set according to Qubes needs:
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~~~
[XDisplay]
ServerArguments=-nolisten tcp -background none
~~~
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* disable the lightdm service:
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~~~
$ sudo systemctl disable lightdm
~~~
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* enable the sddm service:
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~~~
$ sudo systemctl enable sddm
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~~~
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* reboot
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Window Management
-----------------
You can set each window's position and size like this:
~~~
Right click title bar --> More actions --> Special window settings...
Window matching tab
Window class (application): Exact Match: <vm_name>
Window title: Substring Match: <partial or full program name>
Size & Position tab
[x] Position: Apply Initially: x,y
[x] Size: Apply Initially: x,y
~~~
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.)
This can be useful for creating a simple shell script which will set up your
workspace the way you like.
Mailing List Threads
--------------------
* [Nalu's KDE customization thread](https://groups.google.com/d/topic/qubes-users/KhfzF19NG1s/discussion)