Same problem bothers me almost every hour. Here is my situation and what I found.
CPU: i7-2600 GPU: AMD HD 7850 Gigabyte (using FGLRX driver) Motherboard: ASRock Z68 pro 3 RAM: 8GM 2TB HDD + 120GB Intel SSD Ubuntu 12.04 with kernel 3.2.0-36-generic No other TTYs can be started "using Ctrl + Alt + F1, F2..." , and mouse and keyboard was locked too. Bu ,"Everything" seems to be keep running while the screen freeze. I can still listen to music through USB while the screen freezes. And today i found i can even remote log in using Macbook Air within the LAN. I can 'ls', 'vim', and 'ls -tnl /var/log'... I couldn't find anything happened at the time. and I EVEN tried 'sudo reboot' !! It WORKED for me !! I think the only three things freeze and crashed is "screen", "mouse", "keyboard" (I re-plug my mouse usb and insert again, nothing happened...) For anyone annoyed by this problem, try remote login and sudo reboot to avoid hard reboot, and I hope this could rule out some possibilities when debugging. Thx. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+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