VirtualBox

source: vbox/trunk/doc/manual/en_US/dita/topics/guestadd-resizing-linux.dita

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1<?xml version='1.0' encoding='UTF-8'?>
2<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
3<topic xml:lang="en-us" id="guestadd-resizing-linux">
4 <title>X11/XWayland Desktop Environments</title>
5
6 <body>
7 <p> The Guest Additions provide services for controlling the guest system's monitor topology. Monitor topology means the resolution of each virtual monitor and its state (disabled/enabled). The resolution of a virtual monitor can be modified on the VM by using the <b outputclass="bold">View</b> menu, or from the host side by resizing the window that hosts the virtual monitor, or the <userinput>VBoxManage controlvm <varname>vmname</varname> setscreenlayout</userinput> command. See <xref href="../cli_topics/vboxmanage-controlvm-setscreenlayout.dita"/>. Screens enabled must be contiguous or the command will have no effect.</p>
8 <p>On guest operating systems with X11/XWayland desktops this is put into effect by any of the following services:</p>
9 <pre xml:space="preserve">VBoxClient --vmsvga</pre>
10 <pre xml:space="preserve">VBoxClient --vmsvga-session</pre>
11 <pre xml:space="preserve">VBoxDRMClient</pre>
12 <p>On X11/XWayland desktops the resizing service is started during desktop session initialization, that is desktop login. On X11 desktops <codeph>VBoxClient --vmsvga</codeph> handles screen topology through the RandR extension. On XWayland clients <codeph>VBoxDRMClient</codeph> is used. The decision is made automatically at each desktop session start.</p>
13 <p>On 32-bit guest operating systems <userinput>VBoxDRMClient</userinput> is always used, in order to work around bugs.</p>
14 </body>
15</topic>
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