I'm unable to reproduce this bug, as well as bug 885991. The seccond screen in xorg.conf does not appear to work (see Xorg.0.log). I do have dual (physical) screens working great via xrandr and gnome-settings daemon. This is using fglrx-updates-12.104-0ubuntu0.0.1 and kernel 3.2 in precise.
Here are the relevent sections of Xorg.0.log [ 15.802] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Oct 16 16:02:06 2013 [ 15.802] (==) Using config file: "/etc/X11/xorg.conf" [ 15.802] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 15.944] (==) ServerLayout "aticonfig Layout" [ 15.944] (**) |-->Screen "aticonfig-Screen[0]-0" (0) [ 15.944] (**) | |-->Monitor "aticonfig-Monitor[0]-0" [ 15.944] (**) | |-->Device "aticonfig-Device[0]-0" [ 15.944] (**) |-->Screen "aticonfig-Screen[0]-1" (1) [ 15.944] (**) | |-->Monitor "aticonfig-Monitor[0]-1" [ 15.944] (**) | |-->Device "aticonfig-Device[0]-1" and [ 17.046] (EE) Screen 2 deleted because of no matching config section. ** Attachment added: "Xorg.0.log" https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/885989/+attachment/3879661/+files/Xorg.0.log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/885989 Title: white screen on second monitor when using two xsessions Status in Nautilus: Confirmed Status in “nautilus” package in Ubuntu: Triaged Status in “nautilus” source package in Precise: Triaged Bug description: If enable dual head mode (two X screens), the second monitor went white after login with unity or unity-2d. After tracking the gnome- session, it is caused by running "nautilus -n" for this configuration. And if kill the nautilus process, the desktop showed up normally on second screen. lsb_release -rd Description: Ubuntu 11.10 Release: 11.10 apt-cache policy nautilus nautilus: Installed: 1:3.2.1-0ubuntu2 Candidate: 1:3.2.1-0ubuntu2 Version table: *** 1:3.2.1-0ubuntu2 0 500 http://cn.archive.ubuntu.com/ubuntu/ oneiric-updates/main amd64 Packages 100 /var/lib/dpkg/status 1:3.2.0-0ubuntu5 0 500 http://cn.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/nautilus/+bug/885989/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
