[Pkg-xfce-devel] Bug#470227: xfce4-panel crashes when changing screen on non-xinerama dual screen setup

Vincent.McIntyre at csiro.au Vincent.McIntyre at csiro.au
Thu Mar 13 00:27:07 UTC 2008

>> If you like I will try with xinerama to see if I still have the issue.
> Yeah, thanks

I was able to test with xinerama.
In this mode, positioning panels on the other monitors works great.

>> It would be useful to have distinct xfce4-panels running on each
>> monitor, rather than one huge one which spans all four.
>> Presumably this is exactly why xfce4-panel lets you pick which
>> monitor the panel should appear on?
> Well that's xinerama purpose. There's one big screen, but applications are
> aware that it's composed from n screen. So the panel will only take one
> screen, and you can chose on wich one you want it to go.

This works for me.

> It'd be nice if you could reproduce with the free driver or with vesa one.

I think you should be able to reproduce with vesa, and a multihead setup.
I haven't tested this yet myself, but the only change I made in the
xorg.conf was turning on Xinerama in the ServerFlags. The initial setup
I had was just simple multihead.

Interestingly once I created all the panels I wanted and positioned them
on the various screens (this was done in xinerama mode) and then went back
to multihead, the panels were left positioned ok. It seems to be something
related to positioning in multihead setups.

I should clarify something.
Before I said a window appeared briefly on the screen where I'd asked
xfce4-panel to place panel2. This was the xfce4-panel configuration tool
window - it jumped from display 0 to the target (display 1) and _then_
exited/crashed. I didn't see a panel appear on the requested screen, at
all. In terms of the $DISPLAY variable, the panel configuration tool
jumped from display :0.0 to :0.1.


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