Comment 20 for bug 129226

It is actually http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-gutsy.git;a=commit;h=98f537ca1bc7218f299831c31224027892093ab6 which is causing the glitch. Based on what the patch reverts it (according to my WAG), it would come as no surprise that the DMI information is not precisely sane after a suspend/hibernate event in certain BIOSes and there is some odd poking that has to be done to get it back and/or you may have to wait for the information to stabilize.