keiz@ekz:~$ uname -a
Linux ekz 2.6.35-32-generic #67-Ubuntu SMP Mon Mar 5 19:39:49 UTC 2012 x86_64 GNU/Linux
keiz@ekz:~$ dmesg | grep thermal
[ 12.802106] k10temp 0000:00:18.3: unreliable CPU thermal sensor; monitoring disabled
keiz@ekz:~$
On affected machines the module will report “unreliable CPU thermal sensor; monitoring disabled”, you can add the force=1 option
keiz@ekz:~$ sudo rmmod k10temp [sudo] password for keiz: keiz@ekz:~$ keiz@ekz:~$ sudo modprobe k10temp force=1
If that resolves the issue then add to /etc/modprobe.d/99-local.conf
options k10temp force=1