>From your logs, it's clear that you've got some packages from xorg- edgers hanging around. Specifically libdrm2 2.4.19+git20100307.04fd3872-0ubuntu0sarvatt. You can't mix-and-match packages from the main archives & xorg-edgers - as you have found, nouveau will break.
You should try installing ppa-purge from the xorg-edgers and running “ppa-purge xorg-edgers”. ** Changed in: xserver-xorg-video-nouveau (Ubuntu) Status: Confirmed => Invalid -- X.org can't start with nouveau in normal ([drm] failed to open device, No devices detected.) and failsafe (FBDEV(0): FBIOPUTCMAP: Invalid argument) mode https://bugs.launchpad.net/bugs/545920 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in ubuntu. _______________________________________________ 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