Hi @Bryce, thank you for your information. Is that means I should manually install some PPA kernel and test it? I'd try it later. For the past few days, my system locked several times, then, it's more and more clearly shows that: the froze almost always occurred with my LibraOffice Calc ( very strange ). I tested three system options: 1. Ubuntu Classic Environment, 2. Ubuntu Classic Environment (No Effect). 3. Ubuntu Class Environment with your new intel driver. ( upgrade by official apt). The frozen always happened within 3 minute after I start LibraOffice. If I start LibraOffice Calc for just few seconds and close it immediately, after that the frozen won't occurred. But if I want use LibraOffice Calc for a long time, I MUST set 'fbdev' as my default graphics driver, otherwise the will occurred soon. In the past few days, the apport bug collection tool did not shows up after everytime this bug occurred, I don't know why until I did some research on google, it told me I should modify my configuration in "/etc/default/apport", and set the default value as '1', hehe. Now I've submitted a new bug here: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/777028 . It might contains some useful information for you guys. If you have any suggestions or advice, please contact me or leave a message here. If you want more frozen bug report, please let me know. Thank you for all your kindness help.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/754777 Title: [sandybridge-m-gt2] GPU lockup (Blitter IPEHR: 0x13000002, Render IPEHR: 0x02000006) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
