Sumsung 205BW(Wide-Screen) is used as an external display. When startx, Sumsung 205BW flashes and after a while, X exit.
When external display is a general screen monitor such as 15' LCD, it can display normally.
Created attachment 11017 [details]
Created attachment 11018 [details]
We tested on 915GM.
pls pull latest xserver bits, Eric just committed a change for quirk edid polarity, you have a good chance to test with his patch.
That monitor happened to be reported as fixed by the sync fix already.