I have the same kind of issue on a Thinkpad T61. I don't really know how/when it started, this T61 is not my main laptop anymore but this morning I had to do stuff on it and noticed network connection wasn't working while the network cable was plugged correctly. I modprobe-r'ed e1000e, then modprobed it again, and eth0 didn't reappeared. I tried to reboot, just in case, and saw this behavior: * high load (1-2) when idle * kworker threads activity (40-60 in spikes) * unresponsiveness of the system I've tried to boot with pcie_ports=compat but it didn't do anything. Unloading e1000e driver fix the cpu usage, but again after a new modprobe the interface doesn't reappear (but the cpu usage either). What really puzzles me is that I can't really link that to a kernel upgrade. I can't say if it happened after the latest kernel 3.0.0-4 upgrade, but even reverting to 2.6.32 doesnt help (in this case it's the 'events' thread which takes huge cpu usage. I didn't upgrade the bios recently either, so I really don't know what could have lead to that. Sorry for the undetailed bug report, if you have any idea how to debug that a bit more, please say so :) -- Yves-Alexis
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