It's seems it related to X-server. I have a high load (0.8) even in login screen, but when I stop lightdm, load drops to near zero. Note that highl load occures all the time, but cpu usage is low (few percent) I googled this problem, the problem may be with kernel drivers. I used power top and here is the results.
** Attachment added: "powertop-results.txt" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/985661/+attachment/3127539/+files/powertop-results.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/985661 Title: High load average To manage notifications about this bug go to: https://bugs.launchpad.net/xubuntu-desktop/+bug/985661/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
