Comment 7 for bug 1548581

I'm aware of two Wacom bugs that can cause 4.4 to lockup, both of which have been recently fixed. It would be very good to know if you're experiencing either. Please let us know what Wacom device you are using that causes these lockups.

Issue [1] sounds most like the symptoms you describe and affects multiple tablets (Primarily the newest "Intuos" tablets with model numbers CTL-490, CTH-490, CTL-690, and CTH-690). A fix is included in Linux 4.4.2 as well as the linuxwacom project's backported input-wacom 0.30.2 driver. Updating the kernel or installing the input-wacom driver should narrow down if this is the problem. You might try SSHing into your system prior to the lockup, running `sudo journalctl -f`, and then bringing the pen into prox to trigger the lockup -- if you're lucky, after a short time you'll see a kernel LOCKUP message printed out that you can compare to the bug report.

Issue [2] I believe is specific to the CTL-471 and CTL-671. The fix has been sent for inclusion in later 4.4 releases but has not yet (as far as I'm aware) yet been accepted.

[1]: https://sourceforge.net/p/linuxwacom/bugs/293/
[2]: https://bugzilla.redhat.com/show_bug.cgi?id=1317116