I have the same error. Installed 12.04 with one monitor, then replaced the monitor with a diff one... Using the normal video drivers, nothing special. I did have to rename the host. I edited hosts and hostname.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993579 Title: lightdm improperly report low graphics card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/993579/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs