Dell Latitiude C800 - problems using dock video

Alex Deucher alexdeucher at
Tue Apr 10 15:26:04 PDT 2007

On 4/10/07, Sam <ss99hi at> wrote:
> Hi,
> I have been struggling to get an external monitor to work with a Latitude C800
> laptop.  The LCD screen works fine with X when the system is undocked.  When
> the system is docked, the LCD is off (obviously) and the monitor is plugged
> into the back of the docking station.  This is when I can't get X to work.
> The video card is an ATI Rage 128 Mobility M4.  I let X do the configuration
> and then tweaked it a little (eg. "Display" "CRT").  I've included my config
> and log file.
> And the odd part is I'm able to use the external monitor fine when I boot up
> Suse 10.1 running X 6.9 and Suse 9.2 (6.8).
> The external monitor is a Sun 21" CRT.

Option "ProgramFPRegs" "FALSE"
in the device section of your config.  If you still have problems file
a bug (


More information about the xorg mailing list