Comment 8 for bug 555595

Relevant bug reports bug #519142 and bug #555315. I wonder if this is related to the fact that I've set the governor manually with the GNOME applet somehow, similar to bug #519142, which causes the bug to appear. If you can also confirm this in addition to the problem being with the governor, it'd be quite beneficial to know what goes wrong when the governor has been once set manually, even after setting it back to ondemand.

As for the kernel differences, they might be indeed explained by the fact that the governor might set the clock speed higher after boot, and decrease it later on, so depending on how soon you do comparison after a reboot, you might think it was the change of the kernel causing the speedup.