Description of problem: system-config-display fails to setup a usable dual-head xorg.conf for either individual displays or for spanning displays when the card is radeon driver based. Version-Release number of selected component (if applicable): system-config-display-1.0.37-2 How reproducible: Always Steps to Reproduce: 1. Attempt to setup dual-head display with any video card that uses the xorg radeon driver. 2. Choose either Individual Desktops or Spanning Desktops 3. Choose either a different card, or same card as on the Settings.. tab. Actual results: According to which of the 4 permutations you select above, you will either get: The secondary monitor in power save mode but the mouse will travel off the side of the primary monitor as if correctly using two monitors in one display. or The secondary monitor in power save mode but the mouse will not travel off the side of the primary monitor, as if in plain single monitor mode. or The secondary monitor is a clone of the primary monitor, and the mouse will not travel off the side of the primary monitor, as if in plain single monitor mode. Expected results: Both monitors on, and the mouse will move across them, and either as a double wide :0.0 or as :0.0 and :0.1. Additional info: I think the problem is that Xinerama does not work with the radeon driver. The radeon driver uses MergedFB mode. I will attach an xorg.conf that works as a 3200x1200 :0.0. I will run any tests necessary to help with the resolution of this bug. Contact me directly via email at wwalker.
Created attachment 126415 [details] This is the xorg.conf file I manually created that works.
Workaround is given in this thread: http://www.fedoraforum.org/forum/showthread.php?p=495185 Seems like the "ServerLayout" options are being ignored. I think you need to add something like: Option "CRT2Position" "RightOf" to the "Device" section for your primary videocard. That worked for me, at least...
Reporter, I am sorry, that we have left this bug unnoticed for so long, but could you confirm please, that this bug still could be reproduced with the latest updates of Fedora (FC6, F7, or Rawhide)? And if it is reproducable, could we get also xorg.conf and Xorg.0.log generated by system-config-display which didn't work? Of course, working /var/log/Xorg.0.log would be useful as well.
No information requested provided, no joy for anybody -- closing this bug as INSUFFICIENT_DATA. Reporter, if you could, please, reopen with additional information.