I am using a Fujitsu Lifebook A544, with normal HDD and optical drive. The high-cpu load issue is present with kernel 3.19 (Ubuntu Trusty), 4.2 (Ubuntu Wily and Fedora 23) and 4.3 (Ubuntu Xenial), with BIOS 1.18 and 1.19. Moreover, the optical drive seems to be unable to read CDs and DVDs.
After upgrading the BIOS to 1.20, the problem disappears with all the aforementioned kernels, and the optical drive is back to reading CDs and DVDs again. I believe that the issue was known by Fujitsu itself, since it reports the bug as fixed in the BIOS 1.19-1.20 changelog. I am wondering if upgrading the BIOS solves the problem also for the SSD-equipped laptop. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1491467 Title: kworker consuming cpu due to GPE13 interrupt storm on Fujitsu A544 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1491467/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
