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[Bug 1198324] Re: softlockup during boot on AMD A83500m

 

Julian

Running 3.11.0-3-generic I am seeing no reoccurence of the issue!  Good
stuff.

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https://bugs.launchpad.net/bugs/1198324

Title:
  softlockup during boot on AMD A83500m

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  The current Saucy kernel (config-3.10.0-2-generic) causes  my machine
  to lock during bootup. The last known working kernel I have is
  3.8.0-26-generic. Switching 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 scrolling 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.

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