I also performed a BIOS update. Still the same: the cores all reach C10 whereas the package only reaches C2 (pc2).
$ uname -a Linux kaymes 4.7.0-994-generic #201606052244 SMP Mon Jun 6 02:46:22 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux $ sudo dmidecode -s bios-version R02ET46W (1.19 ) ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1578840 Title: System doesn't enter low power states on Skylake processors (Lenovo Thinkpad X260) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1578840/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs