I've the same problem, 2nd Screen a simply mousedown crashes the whole X-Server. I could not find a soultion untill now.
My configuration: Ubuntu 8.04 w/ Compiz fusion # lspci | grep VGA 01:00.0 VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series] # cat /proc/cpuinfo | grep model model : 15 model name : Intel(R) Core(TM)2 Duo CPU E4400 @ 2.00GHz ** Attachment added: "xorg.conf" http://launchpadlibrarian.net/17298945/xorg.conf -- Xorg crashes when using two monitors set up by aticonfig (BigDesktop mode) https://bugs.launchpad.net/bugs/222163 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs