Xorg 7.4 displays a black screen and hangs on my Iiyama Vision Master 450.
Xorg 7.2 worked out of the box.
Discussion on the x.org list identified bogus EDID data as the problem.
The server attempts to use a 1600x1200 mode that does not work.
The workaround is to add 'Modes "1280x1204"' to all the Display subsections of xorg.conf, then the server starts OK.
System is GNU/Linux, kernel 184.108.40.206, gcc 4.1.2, glibc 2.5.1.
Video card is ATI Radeon 9250 PCI
Versions: xorg-server-1.5.3, xf86-video-ati-6.12.2.
Created attachment 24994 [details]
Default xorg.conf that displays the bug
This is a copy of the default xorg.conf created by "Xorg -configure".
It reproduces the bug as described.
Created attachment 24995 [details]
Server log from a buggy X session.
This the server log using the previous xorg.conf and running "X -config <conf>".
The screen goes blank. I recovered with Alt-SysRq-r , Ctrl-Alt-F1 , Ctrl-C .
Created attachment 24996 [details]
Server log from buggy session.
Oops, I resubmitted the xorg.conf last time. *This* is the server log.
Created attachment 24997 [details]
Fixed xorg.conf .
This is a new xorg.conf, same as the old one except for adding Modes lines as described in the bug description.
With this configuration the server displays the background and cursor as you would expect.
Created attachment 24998 [details]
Server log of fixed session
This is the log of a successful session using the fixed xorg.conf submitted above.
The session was started and stopped exactly as before, only the config file is different.
The diff of the logs is very small.
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.