ubuntu-x-swat team mailing list archive

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Okay, some progress.   I was on a screen showing the System Monitor and
some processor load widgets when I experienced my most recent "freeze".
The System Monitor window went blank, but I could still move the mouse,
and I could the processor load widgets kept running.... I could see that
both cores had gone solidly to 100%.   I clicked on the desktop icon for
konsole.... about 5 minutes later, I got a pop up message saying that
the application couldn't be started.   I let the system continue to run
for almost 20 minutes... the mouse and keyboard froze, however the
system still responded quickly to external pings, and there was regular
flashing of the disk activity light.... which I believe was from an HD-
PVR recording to a separate drive that was in progress at the time of
the freeze.

So, it's not a "real" freeze... something is stealing 100% CPU time,
such that you can't even toggle numlock on the keyboard.  The kernel is
still alive....  responding to networking pings, and the HD-PVR driver
is still taking data from USB and storing it to disk.

So, I started hunting logs from the time of the freeze.  The attached
kern.log shows what happened during that very busy period.  The
following message seems to have been the start my systems "flash
forward"  ;-)  ....  more info in the log.

Jun  1 14:25:04 family kernel: [52468.400821] BUG: soft lockup - CPU#1
stuck for 61s! [soffice.bin:6615]


** Attachment added: "Excerpt from kern.log at time of 100% CPU"
   http://launchpadlibrarian.net/49515991/kern.log

-- 
Ubuntu 10.04 random freezes
https://bugs.launchpad.net/bugs/585765
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