Comment 82 for bug 1827884

Michael, first of all thanks for testing. It seems that (in your case at least) the problem was fixed by the extra commits that I backported into 4.15.0-54, so I think it's worth to have them applied.

To answer your questions, 1) you may want to install also linux-modules-4.15.0-54-generic_4.15.0-54.58+lp1827884_i386.deb and 2) the next step is to send an SRU email to the kernel-team mailing list (I'll do that) requesting to include these fixes. If the request is accepted, during the next SRU cycle these fixes will be applied to the "official" kernel.

In the meantime you can safely use the test kernel if it works and, as soon as the new kernel comes out, you'll get it via the regular automatic updates.