There is one physical VGA connector on the card, and no other video output such as a TV out connector, so I certainly didn't deliberately configure more than one monitor. I am reasonably certain that this specific CRT is also the only monitor that has been connected to this box since Ubuntu was installed at all.
I had used the GNOME tools to change the display resolution, and been puzzled by that setting not sticking across a power cycle. After changing it a second time, it appeared to stick, and I stopped worrying about it. Shortly after that an update to the kernel, gdm and the screensaver (among other random things) was pushed and I had this problem. It doesn't look like the GNOME tools allow configuring a second monitor if one isn't actually plugged in and available so it should be hard to do by accident. -- Login with GNOME or Failsafe GNOME session goes black then back to login screen https://bugs.launchpad.net/bugs/495252 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