Public bug reported: https://gitlab.freedesktop.org/drm/intel/issues/614 the fix released as CVE-2019-0154 increases idle power consumption on intel i915 6th gen and later. That's because the GPU does not enter RC6 any more.
For example, my Thinkpad P50 (6th gen) idles at 9w with current 5.3 kernels. Previously, it idled at 5W. Effects on a T480 (8th gen) are less dramatic but still significant. 5.5RC1 has the maintainer's second pass at this, which restores RC6 idling The maintainer's patch for 5.3 is here: https://gitlab.freedesktop.org/drm/intel/issues/614#note_366057 I have applied this to tag Ubuntu-hwe-5.3.0-25.27~18.04.2 and it builds. I am testing it now. I think it would be very helpful to backport this if you can. ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1856653 Title: CVE-2019-0154 caused major power problem, pls backport maintainers fix To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1856653/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
