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SubjectSysreq during system hang where ssh/screen still accessible.
Hello,
I have an unusual hang:
The box is responding to monitor wakeup key presses and putting the
display to sleep after idle, however the screen is always blank.

From the network side a previously started root ssh screen session can
create more views,but the shell never starts, neither does ls from an
existing shell.

I've configured remote logging and there is noting in any of the logs to
indicate a problem, smart-tools is installed.

The remote log(over SCTP) is still connected and the IRC client is still
connected.

Kernel messages are being logged, last msg from apparmor about empathy.

Key presses wake up monitor, but sysreq-s is not logging anything.

No further ssh shells able to check, but I don't think that dmesg would
even start.

However ssh/screen is still responsive to create new views and switch
views, but the shell never starts.

Feb 12 17:33:33: The only error is smatd: Prefailure: Spin_Up_Time (3)
changed to: 197
Feb 13 12:54 AM an email http://pastebin.com/A8srcY7v
However nothing in the _remote_ log around 1AM/12:54.

Any thoughts?
linux-image-3.2.0-15-generic-pae
System specs.
http://pastebin.com/35NwE0G1



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