I have tested all kernels from 3.2_amd64-3.5_amd64 that were shipped via updates and none worked for me.
After that i installed the 3.8.0-999_amd64 and tested with the options from #650 and as far as I can tell, the options 'powersave=0 i915.i915_enable_rc6=0' did not fix the problem for me. When using the 'i915.i915_enable_rc6=0' option, the X-Server behaves totally weird (cancels session; displays TTY cursor on X-Screen...). If I enable the option 'i915.i915_enable_rc6=1' (I know there are some other levels), the X-Server behaves fine, but the complete computer freezes after some time without any warning. With the 'powersave=0' option everything is fine, even CPU frequencies are adjusted dynamically. After all that testing and other bug reports from NVIDIA/ATI users, I guess the problem is located in a kernel driver for intel chipset (if the NVIDIA/ATI problem are not related to old blob drivers). What else speaks for a kernel bug is that I have still a 3.0.0-26 kernel running and everything is fine with that version. As I think this is a chipset problem this is my conf: MB: Intel DH67CF CPU: Core i5-2500K GRAPHIC: Intel HD3000 RAM: 8GB LINUX: Ubuntu 12.10 64Bit (kernel 3.0.0-26_amd64) Maybe this helps to sort out the problem somewhat. -- 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: Fix Released 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
