I think this bug is assigned to the wrong package. It is very likely a kernel problem. On my hardware, the kernel actually detects the lock. I posted extracts from the syslog file recovered after a hard reset in the following two posts to another thread on the same problem: <a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006/comments/42";>1154006#42</a> and <a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1154006/comments/46";>1154006#46</a>. The lines to look for are
Apr 10 18:58:51 ceylon kernel: [ 2412.456005] ioatdma 0000:00:08.0: reset Apr 10 18:58:52 ceylon kernel: [ 2412.603756] BUG: soft lockup - CPU#3 stuck for 22s! [svn:5127] in #42 and Apr 14 13:16:12 ceylon kernel: [18557.572005] ioatdma 0000:00:08.0: reset Apr 14 13:16:12 ceylon kernel: [18557.772001] INFO: rcu_sched detected stall on CPU 1 (t=15000 jiffies) Apr 14 13:16:12 ceylon kernel: [18557.772002] sending NMI to all CPUs: in #46. I just went back to 10.04, the instability of 12.04 is just ridiculous. I hope that a kernel developer is following this discussion and might find a hint in the syslog extracts I posted under the other number. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently. Status in “linux” package in Ubuntu: Fix Released Status in “xserver-xorg-video-intel” package in Ubuntu: Fix Released Status in “linux” source package in Precise: Fix Released Status in “xserver-xorg-video-intel” source package in Precise: Fix Released Bug description: Update: 6/12/2012 This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset. Seems to happen on a variety of configurations, including nVidia, ATI and Intel graphics. If you are still able to TTY or SSH into other sessions, move the mouse or use the keyboard, file another bug. Thx. Joris V. (brains). Update: 5/21/2012 Updating the kernel to 3.3.6 as suggested by Michael in #91, the system seems stable, no freezes yet in 5-6 hrs of using and watching videos for couple of hrs. Original description: I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing, for the first few hours it ran smoothly and when I started watching videos it started freezing randomly. I have to use hard restart every time. Initially it was only during videos but now even during normal browsing it is freezing. I am using on board graphics and do not have any graphics card installed. Can someone please help me here, I really love the new looks of 12.04 and it bugs me not being able to use :( Below is my hardware configuration: Processor: Intel CORE i3 processor (2nd generation) Board: Intel® Desktop Board DH67BL Ram: 4GB Graphics: On board HDD: 500 GB Please let me know if you need more information, or any specific logs I can capture (and how). Thanks, Ketan Patil To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
