DQ77KB 100% kworker or high pitch noise

[Timo]

Hi,

I have an Intel motherboard DQ77KB which has a 2-pin header which says
panel_off and a fresh Ubuntu 12.10 (3.5.0-18-generic
) install and a display connected via Displayport (DP1, not eDP1). If I
connect the header in the running system a kworker process pops up with
100% cpu usage. If I leave the header unconnected no kworker process
runs, which is good, but a pitch noise comes from the motherboard,
probably from some voltage regulators.

I am no programmer, and I don't understand much about the kernel. But I
would like to get the problem solved. If I can be any help, please let
me know.

Kind regards
Timo
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[Greg KH]

Post by Timo
Hi,
I have an Intel motherboard DQ77KB which has a 2-pin header which
says panel_off and a fresh Ubuntu 12.10 (3.5.0-18-generic
) install and a display connected via Displayport (DP1, not eDP1).
If I connect the header in the running system a kworker process pops
up with 100% cpu usage. If I leave the header unconnected no kworker
process runs, which is good, but a pitch noise comes from the
motherboard, probably from some voltage regulators.
I am no programmer, and I don't understand much about the kernel.
But I would like to get the problem solved. If I can be any help,
please let me know.

Given that you are running the Ubuntu disto, I suggest you file a bug in
their bug tracking system, as they are the best ones that can help track
down this issue for you.

Best of luck,

greg k-h
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