@Carlos: Do you mean to say you've got a ThinkPad X220 (sandy bridge)? Or, as you stated, do you have an X200 (core 2 duo)?
This bug was originally reported regarding an X200s with core 2 duo, but was highjacked and subsequently "fixed" only for current Sandy Bridge processors. See comment #209 for a coherent explanation of the confusion in this bug report.
@Carlos: Do you mean to say you've got a ThinkPad X220 (sandy bridge)? Or, as you stated, do you have an X200 (core 2 duo)?
This bug was originally reported regarding an X200s with core 2 duo, but was highjacked and subsequently "fixed" only for current Sandy Bridge processors. See comment #209 for a coherent explanation of the confusion in this bug report.