Comment 26 for bug 440470

I have experienced same issue with all karmic kernels acpi laxing is not a real fix even if it suppresses the error, in some way the must be some IO probing being done by acpi and sensors banging IO ports which I understand can be harmful for hw. The asrock ION family has a hw monitoring/control chip with no drivers available in the wild from either Asrock or Linux communities. Asrock first line support say W83677HG-I (the chip in question) has linux drivers yet nowhere are they to be found.

I believe that this chip is also part of solving this issue properly lm-sensors project have a request for such driver but nothing so far is up.

Also noticed issues with kernels up to -18 karmic flavours have issues with supporting modules like coretemp for instance where the coretemp.ko must be compiled in order to work.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/485234

This is all related IMO.