Tried switching to 3.19 kernel - still high speed. Tried switching to intel X driver instead of modesetting: CPU still runs at high speed.
The only changes I haven't backed out are: a) The Ubuntu 15.10 userland. b) The BIOS update from 1.07 to 1.10. With absolutely quiescent system, under modesetting driver, CPU will settle at 800MHz, but wiggling the mouse or outputting to an xterm causes the CPU speed to rise. Under intel driver, an apparently absolutely quiescent system seems to use more CPU than under modesetting. powertop is reporting power usage between 12 and 26 W, whereas previously with 15.04 I had power usage of 5-8W. Please help, this is killing me. No battery = no computer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1535426 Title: CPU runs at high speed after upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1535426/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
