I am running 12.04 LTS and got the same problem. So far, I could reproduce it by running Filezilla. The machine completely freezes, no mouse, no terminal, not even the magic kernel commands work anymore, and yes, the fan spins up.
Machine T530, Intel i915, FullHD display. What I tried: Ubuntu 12.04.01 LTS from HDD upgraded from 10.10 via 11.04/11.10 Ubuntu 12.04.01 LTS from thumbdrive, plain installed from ISO Ubuntu 12.10 from thumbdrive, plain fresh ISO Gnome3 3.4 and 3.6 Gnome3 Fallback XFCE 4.10 Cinnamon 1.6.7 Unity Compiz Metacity With and without external display I cannot get kernel 3.3 or higher to work on my machine with the installed Ubuntu on HDD. Somehow the graphics fail but I currently have a 13.04 alpha running from thumbddrive and will see if this works ok or not. Already had a freeze without Filezilla open when I was starting Firefox. Survied an entire day when not using Filezilla, but since I had a freeze without it today, this is rather a lucky incident than system. But at least Filezilla seems to provoke it. Nothing in any log files, because the system stops instantly. So I suspect the kernel in conjunction with the T530 hardware. Turned of hyperthreading, power management, and so on... all the same. Because it happens with an 3.5 kernel as well, it is not only a 3.2 problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/908335 Title: Kernel Hard Freezing Very Often To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/908335/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
