I am pretty sure that Arek is experiencing a different issue. The bug report is specifically about pseudo-Xinerama display size hinting being broken while using TwinView mode. Arek's xorg.conf is attempting to use true-Xinerama from a single geforce card. I am pretty sure that the BusID needs to be unique in each "Device" section. Look at the NVidia documentation for details.
On the other hand, the upgrade may have caused both problems in the same way. *** I may very likely be wrong here. *** I think the Gutsy upgrade reverts to open source drivers. You may have to enable/re-enable the NVidia proprietary driver to support this configuration. Cheers, Aaron -- nvidia dual head twinview (pseudo-xinerama): gnome-panel and maximized windows span both heads on first login https://bugs.launchpad.net/bugs/139313 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs