dual boot 8.10 and 9.04 and dual monitor setup - gnome panel positions

[Derek Broughton]

Colin Law wrote:

> Hi
> 
> I have a dual boot Ubuntu 8.10 and 9.04 setup with a common /home
> partition.  I have a Toshiba Satellite laptop with an external monitor
> which I use in conjunction with the laptop display in extended desktop
> mode.  This works fine except for a problem with the gnome panel
> positions at the top and bottom of the screen.  I can set which
> monitor I wish these to appear on using gconf-editor and setting
> /apps/panel/toplevels/top_panel_screen0/monitor (and
> bottom_panel_screen0) to 0 or 1.  The problem is that on my 8.10 boot
> monitor 0 is the external monitor and on 9.04 monitor 0 is the laptop
> display.  I am at a bit of a loss to know why or what to do about it.
> 
> I have checked the two xorg.conf files and they are identical (default
> except for the virtual display size to encompass the two monitors).
> 
> Any suggestions would be much appreciated.

udev & hal :-)  OK, you wanted something a little more verbose...

Essentially, most of the X configuration is being done in hal these days, so 
I'd locate all the .fdi files on your system and see if anything seems to be 
setting the monitor numbers.  The system fdis are in /usr/share/hal/fdi and 
you can put overrides in /etc/hal/fdi/policy.

You probably don't have to do anything to udev explicitly, but it's 
involved.
-- 
derek