kworker/u8:5 taking up 70%+ cpu
#1
so interesting problem, not sure where to look to solve.

I had a working copy of XBMCBuntu v13 installed, was running okay, then I went to switch it to login via opendesktop instead of going straight into steam.

Previously, I would do this by just exiting XBMC, then log on via XBMCBuntu.
With the lastest XBMCBuntu v13 install
First time I went to exit, it went right back into xbmc.
Second time I went to exit, it went right back into xbmc.
Third time, it actually went to the login screen. I logged in via XBMCBuntu, then restarted box, but noticed the system was laggy.

http://puu.sh/8MMET/40a03149bc.png

I'm not sure what kworker/u8:5 is, or why it's sucking up so much CPU.

Can anyone assist with diagnosing it?
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kworker/u8:5 taking up 70%+ cpu0