The bug itself is fixed in the 4.11.0-041100rc5-generic kernel. But I encounter regular freezes with this version of the kernel, and I have ACPI related error messages.
Here are the ACPI messages from the dmesg : [ 6.090510] ACPI Warning: \_SB.IETM._ART: Return Package type mismatch at index 0 - found Integer, expected Reference (20170119/nspredef-297) [ 6.090530] ACPI: Invalid package element [0]: got number, expecting [R] [ 6.090531] _ART package 0 is invalid, ignored [ 6.090563] ACPI Warning: \_SB.IETM._TRT: Return Package has no elements (empty) (20170119/nsprepkg-130) ** Tags added: kernel-fixed-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/1677575 Title: Thunderbolt hotplug causes system hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1677575/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs