Hi Alan, I notice this is tagged 'regression'. Can you tell me when it first started cropping up?
It would be useful to boot an earlier Ubuntu version from when it was working properly, and collect the EDID (ala 'xrandr --verbose' or get- edid from the read-edid package) for comparison. Booting a livecd should be sufficient. Is there any difference between plugging the monitor in with the system booted, vs. plugging it in while off and then booting? This doesn't look like an rc6 type of bug, but it is sandybridge graphics. I think you may have filed this from before when that got switched on. If not, you may as well try booting with it off and see if it makes any difference. https://wiki.ubuntu.com/Kernel/PowerManagementRC6 On the off chance it's a video card hardware-specific problem, any chance you can appropriate a different laptop or PC and see what EDID it's able to get? ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/927155 Title: [snb-m-gt2+] Viewsonic VA2012w not correctly detected (Invalid EDID) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/927155/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
