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 Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
