Thanks for testing this. For what it's worth, I have been suspecting a recent kernel patch which altered graphics card timings, but I'm not really sure. It is interesting from that perspective that you booted an earlier kernel and it did not make the issue go away.
I wonder if something changed somewhere other than the kernel, which affects being able to read the edid from the graphics card? Fwiw, there is nothing particularly special about Ubuntu's X.org in terms of detection of external monitors; it should pretty much work the same here as upstream and other distros. We sometimes carry some quirks or other local fixes, but not in this case. -- External monitor suddenly gets wrong resolution on laptop (nvidia). https://bugs.launchpad.net/bugs/479323 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
