The way to get useful information out of the intel kernel driver is to add “drm.debug=0x04” to the kernel boot commandline, which will cause the kernel module to print out a bunch of modesetting debugging information. Since this problem goes back to boot with the plymouth splash screen, it's clearly a problem in the kernel module's modesetting.
It's very strange that it appears non-deterministic! -- [GM45] [upgrade] [regression] [lucid]: external monitor only usable via DVI, not via DP https://bugs.launchpad.net/bugs/557436 You received this bug notification because you are a member of Ubuntu-X, which is a direct subscriber. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
