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← Revision 21 as of 2025-04-23 07:25:44 ⇥
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| #rev 2020-09-15 gfreudig ## page was renamed from x11vnc |
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| `x11vnc` allows you to view and interact remotely with an existing desktop session of yours. In case you have no running session on the physical display and need to login graphically, please contact [[mailto:support@isg.ee.ethz.ch|support]] and provide the name of the host you need to access. | |
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| == How do I use x11vnc? == | {{{{#!wiki important '''Please note:''' While you are working with `x11vnc`, someone in your office can watch your actions on the local monitor of your computer. }}}} |
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| Start a x11vncserver with: | == Other use cases == The normal [[RemoteAccess/VNC|vncserver]] relies on the [[https://www.mesa3d.org/|OpenGL implementation called Mesa]], which is not hardware-accelerated in a VNC session. In case you see errors similar to: |
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| fgtest02@balz:~$ x11vnc |
"Xlib: extension "GLX" missing on display ":1". }}} you might want to use x11vnc. The GLX driver in use and whether hardware acceleration ("direct rendering") is active can be shown with {{{#!highlight bash numbers=disable glxinfo |grep -E 'vendor string|direct rendering' |
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| You can also start it with a password. Replace USERNAME with your own username. | == How do I start x11vnc? == In a terminal window in your existing desktop session start a `x11vnc` server with password protection. If you already have a password file `~/.vnc/passwd` from `vncserver` you must enter: |
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| fgtest02@balz:~$ x11vnc -rfbauth /home/USERNAME/.vnc/passwd | pmuster@zampano:~$ x11vnc -usepw -q |
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| The VNC desktop is: zampano:0 PORT=5900 |
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| At the end you should get following message: | To start x11vnc in a ssh terminal not belonging to the existing desktop session you must specify the X11 display: |
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| The VNC desktop is: balz:0 | pmuster@zampano:~ $ x11vnc -usepw -q -display :0 The VNC desktop is: zampano:0 |
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| If you don't have a password file you can create one with: | If you don't have a password file from vncserver usage you will be prompted for one: |
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| fgtest02@balz:~$ x11vnc -storepasswd | pmuster@zampano:~ $ x11vnc -usepw -q |
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| Write password to /home/fgtest02/.vnc/passwd? [y]/n y Password written to: /home/fgtest02/.vnc/passwd |
Write password to /home/pmuster/.vnc/passwd? [y]/n y Password written to: /home/pmuster/.vnc/passwd |
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| The VNC desktop is: zampano:0 PORT=5900 |
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| After setting everything up you can connect to it with the program VNC Viewer | After setting everything up you can connect to it with a VNC viewer. If you are outside ETH you need to either use VPN or tunnel the VPN connection trough a SSH. See [[RemoteAccess|remote access documentation]] for details. |
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| '''Bild''' | |
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| If you log out or close the window the process will be stopped. | After connection, if you log out or close the window the process will be stopped. |
x11vnc
x11vnc allows you to view and interact remotely with an existing desktop session of yours. In case you have no running session on the physical display and need to login graphically, please contact support and provide the name of the host you need to access.
Please note: While you are working with x11vnc, someone in your office can watch your actions on the local monitor of your computer.
Other use cases
The normal vncserver relies on the OpenGL implementation called Mesa, which is not hardware-accelerated in a VNC session. In case you see errors similar to:
"Xlib: extension "GLX" missing on display ":1".
you might want to use x11vnc. The GLX driver in use and whether hardware acceleration ("direct rendering") is active can be shown with
glxinfo |grep -E 'vendor string|direct rendering'
How do I start x11vnc?
In a terminal window in your existing desktop session start a x11vnc server with password protection. If you already have a password file ~/.vnc/passwd from vncserver you must enter:
pmuster@zampano:~$ x11vnc -usepw -q The VNC desktop is: zampano:0 PORT=5900
To start x11vnc in a ssh terminal not belonging to the existing desktop session you must specify the X11 display:
pmuster@zampano:~ $ x11vnc -usepw -q -display :0 The VNC desktop is: zampano:0 PORT=5900
If you don't have a password file from vncserver usage you will be prompted for one:
pmuster@zampano:~ $ x11vnc -usepw -q Enter VNC password: Verify password: Write password to /home/pmuster/.vnc/passwd? [y]/n y Password written to: /home/pmuster/.vnc/passwd The VNC desktop is: zampano:0 PORT=5900
Connect with VNC Viewer
After setting everything up you can connect to it with a VNC viewer. If you are outside ETH you need to either use VPN or tunnel the VPN connection trough a SSH. See remote access documentation for details.
After connection, if you log out or close the window the process will be stopped.