I'd like to emphasize again that this bug has severe implications on some systems. I just found out that bug #50341 is actually caused by this bug. To summarize it: As long as I don't work around with max_cstate=1, I can't even scroll smoothly in an xterm (not speaking about something like firefox) and my keyboard repeat rate goes down to about 1/6 of the value with max_cstate=1.
** Bug 50341 has been marked a duplicate of this bug -- cpu idle time in /proc/stat wrong https://launchpad.net/bugs/30557 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs