Public bug reported: This happens on a Dell Latitude E6540 (4th gen core i7 CPU).
Steps to reproduce: 1) normally boot the computer and make sure everything works as expected (i use the ondemand governor) 2) suspend 3) make the computer is unplugged and resume Expected behavior: cpu should work normally Actual behavior: cpu always stays at minimum frequency (in my case 800 MHz) If i resume from suspend while plugged to the AC charger, everything works as expected. ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1260112 Title: CPU stuck on minimum frequency after resume from suspend and unplugged To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1260112/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs