Googled high ACPI interrupts and the issue appears to be BIOS-related. Definitely kernel-level, can be traced as far back, as 2007 - reappears after fixes.
Below is the most recent incident (when the bug was assigned) - abandoned by the developer for whatever reason. https://bugs.archlinux.org/task/28859 https://bbs.archlinux.org/viewtopic.php?id=138249 The reporter "fixed" it himself by some form of hard reset - removing the battery. So for anyone who owns a laptop with a removable battery (not Samsung 7) - here is a chance to try it. If you think it worked, test suspend/restore as well. BTW I tried his kernel parameters "acpi_os_name=\"Microsoft Windows NT\" i915.i915_enable_rc6=1 i915.lvds_downclock=1" with no effect. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/887793 Title: Kworker constantly taking about 100% CPU To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/887793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
