It turns out that I did upgrade the X packages to 1.9 (I was confused by the 1.8.99... version number). I'm sorry Harry, your first suggestion was right from the beginning. As far as the workaround, sadly, it didn't work. I'm attaching the Xorg log in case it provides any useful information. At least now I know that downgrading the X packages will probably fix the problem. Thanks.
** Attachment added: "The xorg.log with the ignoreABI option on" https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/607551/+attachment/1509782/+files/Xorg.0.log -- nvidia drivers not working https://bugs.launchpad.net/bugs/607551 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers 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