jtd, given you have had no response from the mailing list, as per https://wiki.ubuntu.com/Bugs/Upstream/kernel you should re-test on the latest kernel, and only if still reproducible report to bugzilla.
jtd, given you have had no response from the mailing list, as per https:/ /wiki.ubuntu. com/Bugs/ Upstream/ kernel you should re-test on the latest kernel, and only if still reproducible report to bugzilla.