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[Bug 1386518] [NEW] utopic: Watchdog detected hard LOCKUP on cpu

 

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After upgrading to Utopic, I have experienced two "crashes" (a few hours
apart).  I am unable to identify the trigger.  Searching for similar
bugs either apply to earlier releases of [K]Ubuntu or pertain to
hardware that I do not have.  I say my system "crashes" as I never wait
long enough for the system to actually crash.  I have had to reset the
system both times in order to generate a response.  In both instances,
the mouse was still moving the cursor but no action by the mouse buttons
or keyboard typing generated a response.  Also, the machine would not
respond to soft reset.  A hard reset (prolonged depressing of the power
button) was necessary to regain control.

I have never experienced this issue before (on any hardware type) so I
have limited information to offer (as I don't know where to look).  I
have attached the relevant syslog entries for the last crash.  It is
here that I determined the CPU lockups.  First CPU 4 had a hard lockup,
proceeded by a soft lockup on CPU 1.

Please let me know what else to gather when this occurs again.

- jss

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
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utopic: Watchdog detected hard LOCKUP on cpu 
https://bugs.launchpad.net/bugs/1386518
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