Comment 34 for bug 550486

Happens to me also. This makes it impossible for me to use my external monitor.

I am assuming that this is the same bug because I get the original symptom: my LG246WP identifies as a Goldstar Ltd. 24" screen, with an incorrect list of resolutions.

I am able to use 1024x768 (and certain other 4:3 resolutions) for a minute or so, then the monitor fails with "Invalid Format" message. Other resolutions fail immediately.

Incidentally, is there a work-around for this? Presumably there should be a way to configure this manually without being dependent on correct auto-detection, but I don't know how to do this.