I have just performed a clean install of Ubuntu 14.10 on a Samsung Chronus 7 (700Z7C-S02UK), and this problem returned. This time, adding "acpi=noirq" to GRUB_CMDLINE_LINUX_DEFAULT did not solve the issue (as it did with Ubuntu 14.04). Instead, as mentioned in posts above, disabling GPE13 works. I have added an entry to my /etc/rc.local so this is performed on startup:
echo disable > /sys/firmware/acpi/interrupts/gpe13 I've had a read of what was discussed on the kernel thread here: https://bugzilla.kernel.org/show_bug.cgi?id=53071 and it looks like this may not be a bug, but rather a "manufacturer incompatibility". -- 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: [HP 6710b] Kworker constantly taking about 100% CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/887793/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
