Public bug reported: The current Saucy kernel (config-3.10.0-2-generic) causes my machine to lock during bootup. Swithching to a text mode boot I discovered that CPU #1, #2 and #3 report that they are softlocked by the "migration" process (I believe that's internal to the kernel) and that on CPU #0 the RCU stall detector has detected a stall. The machine in question is a Thinkpad E525 with an AMD A8-3500m APU. I've tried and failed to extract more information from the kernel, but setting softlock_panic just ends up with a continuous repeating stream of text scroliing up the screen faster than can be read.
As I can't boot into that kernel I can't give you the output suggested on the bug submission form, but I've attached the lspci output from the 3.8 kernel version in case that is helpful. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Attachment added: "lspci-vnvn.log" https://bugs.launchpad.net/bugs/1198324/+attachment/3726225/+files/lspci-vnvn.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1198324 Title: softlockup during boot on AMD A83500m To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1198324/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs