I am experiencing this bug as well, on the same hardware. I have tested the mainline builds, and can confirm that the bug exists with linux-image-4.4.0-040400rc7-generic_4.4.0-040400rc7.201512272230_amd64 as well.
After some searching, it appears that this bug is known in upstream: https://bugzilla.kernel.org/show_bug.cgi?id=109051 As such, it probably occurs on most machines with Intel BayTrail processors, and is so far unresolved in upstream, to my knowledge. As the bug report mentions, there is a workaround, namely to add "intel_idle.max_cstate=1" to the boot options (using grub, add this to the GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, then run update-grub). This likely comes at the cost of some increase in power consumption, but so far it seems to work for me. If I get any more hangs even with this option, I will leave another comment. ** Bug watch added: Linux Kernel Bug Tracker #109051 http://bugzilla.kernel.org/show_bug.cgi?id=109051 ** Tags added: kernel-bug-exists-upsream kernel-bug-exists- upstream-4.4-rc7 ** Tags removed: kernel-bug-exists-upsream ** Tags added: kernel-bug-exists-upstream ** 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/1518566 Title: Ubuntu 15.10 freezing randomly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518566/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
