Comment 7 for bug 1805816

Sorry - I've hit a hiccup. `apport` wants me to file extra information (as uploaded above, twice) but upon running at the command line it notes:
`
It appears you are currently running a mainline kernel. It would be better to report this bug upstream at http://bugzilla.kernel.org/ so that the upstream kernel developers are aware of the issue. If you'd still like to file a bug against the Ubuntu kernel, please boot with an official Ubuntu kernel and re-file.
`

I believe I installed 4.19.0 from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19/ which I presume is the official Ubuntu kernel source - should I be installing from elsewhere?

My first step is to mark this as Complete in case someone can give me sensible guidance and I've _also_ posted it to the Kernel.org Bugzilla (which might be the best place for this bug?):
https://bugzilla.kernel.org/show_bug.cgi?id=201811

Any and all guidance very happily received, thanks for your help, Ian.