Ideally, xserver should be able to automatically select the right driver (and options) when switching, if no xorg.conf is present. In testing, though, it appears that the hardware's edid information is not getting read (ddcprobe returns 'edidfail').
So, could you also attach your /var/log/Xorg.0.log, and the (binary) output of get-edid (from the read-edid package)? ** Changed in: linux-restricted-modules-2.6.24 (Ubuntu) Status: Triaged => Incomplete -- Suspend fails on Sony Vaio SZ650, nVidia 8400M GS and nvidia-glx-new https://bugs.launchpad.net/bugs/196596 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