I can confirm complete freeze on 12.04 (no mouse, no keybord, no switch to tty possible)
It seems that the system freezes only when I run a virtualbox (with Windows 7, MS office application running) and additionally browse the web (firefox) outside the virtualbox. Although this might be coincidence or only one of possible triggers. System: Ubuntu Release 12.04 (precise) 64-bit Kernel Linux 3.2.0-32-generic GNOME 3.4.2 nvidia graphics driver version 295.40 Hardware: Dell Latitude E6520 8 GB memory Processor: Intel Core i7-2720QM CPU @ 2.20GHz × 8 graphics: NVIDIA NVS 4200M I had a look into kern.log. Here are the last entries: [11344.255385] warning: `VirtualBox' uses 32-bit capabilities (legacy support in use) [11350.185989] EXT4-fs (sda2): Unaligned AIO/DIO on inode 7208975 by VirtualBox; performance will be poor. [11432.691593] show_signal_msg: 51 callbacks suppressed [11432.691597] VirtualBox[3630]: segfault at 7f9d61cf8cdc ip 00007f9dbb946149 sp 00007fff6eb539d8 error 4 in libc-2.15.so[7f9dbb7fe000+1b5000] The problem is described here, too: https://www.virtualbox.org/ticket/10895 but there is no workaround. ** Bug watch added: Virtualbox Trac #10895 http://www.virtualbox.org/ticket/10895 -- 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 “xserver-xorg-video-intel” package in Ubuntu: Won't Fix Status in “linux” source package in Precise: Won't Fix 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
