I have seen this happen 3 times in the last 2 days since I installed 12.04.1-desktop-amd64 on my core i5 p8z77-v pro. Kernel is 3.2.0-35-generic and everything was brought up to date via update manager.
The system is totally frozen: I can't even ping it from my laptop and I've verified the correct IP from the my router and the mac address of the frozen system. I was able to ping it before. Perhaps even more interesting, when I hit the hard reset button, nothing immediately happens! I don't know how this is implemented, but in the past I've always got an immediate reset. I hit it 2 or 3 times, and it was perhaps 10 seconds later I got a reset. The last time it froze, I saw the same thing, but I didn't as long prior to trying the power button. A single press of the power button did nothing, and I had to hold it down to get the system to reset (as expected.) I was previously running 12.04.1-desktop-i386 on the same machine with identical setup and did NOT see any problems in the same amount of time. Not a definitive finding, I know, as the time frame is quite short, but I perhaps spent more time on the 32-bit version than I have so far on the 64-bit. The syslog doesn't show anything prior to the reboot, although it looked like cron would have just been running: the previous log was at 19:17:01 so the next hourly would have been 20:17:01 and and my reboot was started at 20:19:18. I was browsing the web with firefox 17.0.1 when it froze up. Nothing else going on that I can recall. The previous freeze, I can' t recall if I was browsing, but I was running filezilla to transfer a large directory from a local computer allowing 10 open sftp connetions. After rebooting, I did the same operation 3 or 4 times again without a problem. That was approximately 24 hours ago. Not sure what else to look for. I don't really know my way around linux that well, so if someone wants me to look at something the next time this hangs (and I'm sure it will within another 24 hours or so) just let me know. Otherwise, at some point, I'll may try to upgrade the kernel. I've never done so and don't know what the current state of affairs is, so I guess I'll have to do some research first. Brian Oh, I'll also run a memory test overnight. I've got 16g running at 1600 using an XMP profile, but otherwise, I'm not overclocked. Also, not using swap. I do have an SSD as my main system disk and have mounted /var and /home from an internal RAID5 array with /tmp, /var/tmp and /var/spool using tmpfs. Also, using deadline on the SSD (via rc.local) and leaving all other devices NCQ. The only other thing I've changed from stock is I've mounted the SSD with noatime, notdiratime and discard. Everything is ext4. The only other device I have mounted is an ntfs partition from another drive, but wasn't accessing anything at the time. Oh, and my browser cache is set to memory. I think that covers it. All of this was also my configuration when previously running 32bit. -- 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: Won't Fix Status in “plymouth-theme-int2mil-ubuntu-11.04” package in Ubuntu: Confirmed Status in “xserver-xorg-video-intel” package in Ubuntu: Won't Fix Status in “linux” source package in Precise: Won't Fix Status in “plymouth-theme-int2mil-ubuntu-11.04” source package in Precise: Fix Released Status in “xserver-xorg-video-intel” source package in Precise: Won't Fix 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 : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
