I'm having trouble getting X to run on an external monitor and not the
internal LCD of my Dell Inspiron 4100 laptop.

I'm running XFree86 4.2, and I'm using the radeon driver for the Radeon
Mobility M6 LY rev 0 graphics adaptor under RedHat 7.2 with the 2.4.28
kernel.  I've seen the same behavior with the A03 BIOS that shipped with
the system and the A06 that was just released.

Here is the issue.  Even though I've specified 'Option     "CrtScreen"'
in the Device section of /etc/X11/XF86Config-4, whenever I start up the
X server with the laptop in its docking station, it starts on both the
built-in LCD and the external monitor.  In order to turn off the
internal monitor, I need to strike the Fn-CRT/LCD keys about 3 times
(this toggles between the various settings of internal vs. external
monitor).

I need to turn off the internal LCD display, because otherwise I'm
limited to a 60Hz refresh rate.  In normal docked use, I don't open the
laptop (I can't - there is a monitor stand over it), so I can't strike
the Fn keys.

Any ideas?

Thank!

dbr
-- 
David B. Ritch
High Performance Technologies, Inc.
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