Public bug reported: Ubuntu has new strict EDID guidelines that does not allow LCD widescreen configuration.
Symptoms: Constant flickering on and off of screen content, including distortion similar to a bad tv reception. The screen is a LCD Citizen C19604HD that should run 1440x 900 at 60 Hz (as per manual), which apparently does not have proper EDID. I should note this setup had no problems prior, until tty1 started to complain about a bad EDID checksum during 12.10 beta. Fix: Attempting to set my own xorg.conf evoked a message about running in low graphics mode. It asked if I wanted to (re)configure. I confirmed, after which I no longer needed xorg,conf, nor presumably Option "IgnoreEDID" "on" in xorg.conf which made xorg sessions usable. What should happen The system should be self-healing. The user should not have to grapple with xorg.conf (for hours or days on end with unfamiliar concepts [EDID] and work-arounds), and even less after all that time and effort just to have the system say, "Hey, I don't like what you're doing. Here, let me do it.". This (self-repair) hook should be invoked sooner in the trouble shooting process. See related problem about https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1047146 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1047156 Title: EDID does not allow LCD widescreen configuration To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1047156/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
