Unfortunately, I can't send bug report related to the exact environment where bug occurs since system does not boot then at all. So this bug report was made when radeon.modeset=0 was used. Also, I couldn't find any usable information in kernel or Xorg log files ...
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. https://bugs.launchpad.net/bugs/735126 Title: [natty] system freezes on boot without disabling KMS _______________________________________________ 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