The following comment in bug 383345 seems to sum up the root cause of this issue. Though, why it worked in Jaunty and not in Karmic, I don't know. No bling for me!
> Please, before setting dual screen, disable desktop effects (compiz). > Compiz cannot work at resolution higher than 2048x2048 (yet) on > i915/945 hardware, limitation of HW 2048x2048 max texture size. > Without Desktop effects your dual screen configuration should work. > (it is then limited to 4096x4096 framebuffer size.) > With Desktop effects and resolution 1024+1024, you probably > will experience this BUG. https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video- intel/+bug/383345/comments/62 -- [i945gm] [karmic] X servers hangs when settings up dual monitor config https://bugs.launchpad.net/bugs/438000 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
