From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3.1)
Description of problem:
xinerama will not work with the radeon driver and radeon 7500.
xf86config is set correctly. when using driver supplied with mandrake
9.1, xinerama works. change back to fedora's radeon driver, and i am
back to cloned displays
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.configure xf86config for dual head
Actual Results: cloned displays
Expected Results: extended desktop
With help from Mike Harris I got xinerama working fine. I will attach
my x config. I had to add a a couple of lines to the conf file that
is generated, but it now works.
Created attachment 95991 [details]
working config for xinerama on radeon 7500
Should be fixed with system-config-display-1.0.10-1 in Rawhide.