I rebooted and the problem remains: CPU is always at 100% even when idle. If I run "sudo /etc/init.d/powernowd start" manually, it becomes fine.
gnome-power-manager 2.17.90-0ubuntu1 CPU: AMD Athlon(tm) 64 Processor 3000+ -- g-p-m capplet shuts down powernowd https://launchpad.net/bugs/81261 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
