@Louis Henriquez - OK so I *MIGHT* have some good news. I'm writing this entry from Ubuntu running 12.04 3.2.0-24 DOCKED! It's early days yet and I could yet be disappointed, but it *looks* like with your help I've narrowed down the problem and found a work around.
It appears to be a conflict between my Dell PR02X docking station's USB sub-system and the Logitech C-UAK42 Mini Receiver wireless keyboard and mouse controller. I'll explain this long-hand below in case others are searching for the issue, or it provides clues to anyone trying to fix the it. I followed your advice of removing USB devices under the docked configuration where I knew that the system would eventually fail. I've triple checked each of the results and run the system for long duration in docked configuration so it *looks* like this is the problem. But as I've been trying to resolve this for over a year and had many a false dawn, I'll only know it's fixed after more use. So booting docked, with just the Logitech C-UAK42 Mini Receiver plugged into my Dell PR02X docking station and simply waiting at the login screen was enough for the system to hang in under 5 minutes. Booting docked but with the Logitech C-UAK42 Mini Receiver removed from the docking station meant that in each of the three tests I ran, I was able to leave it at the login prompt for ~20 minutes. The problem was that without it I was obviously without a keyboard and mouse. So out of hope more than science I ran the same test above but this time with the Logitech C-UAK42 Mini Receiver plugged into my laptop (using its in-built USB system - not the docking station's). In this configuration I was able to run the system for >3 hours and through a couple of reboots last night with no problems at all. I'm using it again this morning and so far so good. I've never been able to use a 3.x kernel in that configuration for that long before. I'll keep you updated and *if* this proves to be more conclusive I will update my kernel bug report too. Thank you once again for your help and I'd be more than happy to run further tests if anyone is interested in tracking this down further. Danny Goodall -- 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
