The HWE kernel has been pushed to 4.15 and the problem has disappeared (same machine). Tested again on Xenial and Bionic (which has the newer kernel) and they work fine.
I haven't yet tested Trusty but I suspect that it isn't yet fixed. I will update asap.
The HWE kernel has been pushed to 4.15 and the problem has disappeared (same machine). Tested again on Xenial and Bionic (which has the newer kernel) and they work fine.
I haven't yet tested Trusty but I suspect that it isn't yet fixed. I will update asap.