@Thomas, Jacob,
and "dpkg -l|grep 4.4.0-77", does that show and linux-image-extra or not? If not, try the manual update I described in comment #12 from the -75 kernel.
@Thomas, Jacob,
and "dpkg -l|grep 4.4.0-77", does that show and linux-image-extra or not? If not, try the manual update I described in comment #12 from the -75 kernel.