Upstream kernel has been uninstalled. Before uninstall the "Soft Lockup" bug occured twice: once it was CPU#0 once it was CPU#3 (and the HARD lockup for CPU#2 previously mentioned) Additionally suspend invoked from the drop down menu with the upstream kernal installed would display two randomly alternating messages just before suspending: the ACPI and Device PNP0C0D:00 errors or "Could not write bytes: Broken pipe".
With the default kernel installed (3.2.0-29-generic-pae) the "Could not write bytes: Broken pipe" message seems to have stopped. The AHCI and Device PNP0C0D:00 errors occur less frequently and suspend/resume from the drop down menu functions more smoothly. Suspend/resume with the lid has assumed its previous pattern. With the upstream kernel installed the computer would boot briefly to the message: kvm: disabled by BIOS hda_codec: rates==00 (nid=0x1 : val 0x0...etc. (too fast to see all of it) just before the Ubuntu logo screen. With the default kernel installed this message doesn't appear. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1036456 Title: BUG: soft lockup - CPU#0 stuck for 22s! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1036456/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
