Xvfb concerns and dummy driver issues

Adam Jackson ajax at nwnk.net
Tue May 2 14:13:57 UTC 2017

On Fri, 2017-04-28 at 14:24 -0400, David Jackson wrote:
> Is the plan to keep Xvfb as-is (KDrive?)

As-is, yes. Strictly speaking, Xvfb is not a kdrive server, in the same
sense that Xorg is not a kdrive server. There was a very similar kdrive
server named Xfake, and that was indeed deleted.

> Any ideas about why the dummy driver was not working (killing the
> headless dummy X server brings down any X server running on hardware,
> like the dummy X server somehow gets entangled with other X servers
> on the system),

By default, the Xorg server will remember which virtual terminal it was
launched from (if any), and will attempt to switch back to it when it
exits (or regenerates). So if you start both the dummy and hardware
server from the console, terminating either one will switch back to the
console, which may look like you're "bringing down" the other one.

You can suppress this by launching the dummy server with '-novtswitch'
on the command line.

> and problems playing video?

I'm not sure this is specific enough to guess at.

- ajax

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