Comment 9 for bug 1729337

Here are more details of two Ubuntu servers where I'm experiencing this issue:

uname -a
Linux 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 11:55:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.5 LTS
Release: 14.04
Codename: trusty

uname -a
Linux 4.4.0-98-generic #121-Ubuntu SMP Tue Oct 10 14:24:03 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

Ubuntu 16.04.3 LTS using kernel 4.4.0-97-generic works OK
Ubuntu 14.04.5 LTS using kernel 3.13.0-133-generic works OK

Let me know if there is extra info I can provide to help out, I've found this which seems related: https://bugzilla.redhat.com/show_bug.cgi?id=1502606