[ltp] Hot/Warmplugging T30 (1400x1050) to port replicator with external LCD

[Diego Zamboni]

> just as the subject says, I am trying to hot- or warmplug my T30 to my port 
> replicator. Attached to the port replicator is an external LCD via DVI. The 
> internal LCD runs XFree @ 1400x1050, the external one @ 1280x1024. If I boot 
> the laptop standalone the internal display and its resolution is recognized 
> correctly, same applies to the external LCD when booting docked. But in both 
> cases hotplugging as well as warmplugging the laptop to/from the docking 
> station crashes my X although it works fine in Windows.

With my T30, I also had problems with the external display (I never had
crashes, but I had improper frequency settings mostly). The solution was
to enable Xinerama. Now I can hot-plug/unplug the machine from the port
replicator without problem. When unplugged, I lose the right half of all
my desktops (I haven't found a window manager that handles it
gracefully), but I can live with that :-)

To enable it, you need to add:

Section "ServerFlags"
        Option      "Xinerama" "on"
EndSection

You can see my full XF86Config at
http://www.cerias.purdue.edu/homes/zamboni/files/XF86Config-t30-xinerama

--Diego