I have this issue on a new Thinkpad X220 only when i am on AC power WITHOUT the battery. I've found that this happens due the 65W AC adaptor does not supply enough power to handle peak power draws from the CPU/disk/GPU on the later ThinkPads and probably other laptops and automatically downclocks CPU to the lowest frequency. The explanation and possible solution in this page : <a href = "http://www.thinkwiki.org/wiki/Problem_with_CPU_frequency_scaling";>http://www.thinkwiki.org/wiki/Problem_with_CPU_frequency_scaling</a>
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/555315 Title: ondemand CPU Scaling does not work when AC adapter is plugged in To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-applets/+bug/555315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
