I recently setup and configured a new IBM x346 (dual 3.6 GHz, 16 GB RAM, 2 TB DASD) which contains a single analog video output port (builtin, not a video card). However, the display control panel indicates that it believes the video card has two display outputs, both apparently connected through the same port.
I tried to utilize the "second" display by extending my desktop, but this caused my monitor to display the second screen and no longer display the primary screen (remember, one port).
When I utilized guesswork to "grab" the display control panel from the now unviewable, but accessible, screen 1 (off to the left side of screen 2), I was able to turn off the "extend desktop" feature, but screen 1 did not return to the monitor (even w/ reboot).
Any help would be appreciated; in the near-term, I booted up in safe mode and turned on remote desktop to access the machine (i.e. I can still see the boot sequence and Windows boot screen on the monitor prior to Windows UI kicking off and sending the now defunct screen 2 to the monitor).

Losing primary display on Windows 2003 SE w/ single Radeon display
Wizard of Ogz
per the support engineer:
I am not very clear about your question. Before I can reproduce the issue, I need your help to give me the detailed steps.
-brenda (ISV Buddy Team)
Terry Muench
I went into the system w/ F8 and then changed the display driver to standard VGA which restored the operation of the display.
Thank you for responding.