Didn't test this on a full install but enabled the 4.18.0-16 signed kernel through the cosmic-proposed repository on a Bionic install. Works fine! mokutil reports secure-boot enabled and release shows as 4.18.0-16 :)
It should be noted that just installing this kernel itself did not fix the issue, the kernel-modules-extra package must be installed!
Didn't test this on a full install but enabled the 4.18.0-16 signed kernel through the cosmic-proposed repository on a Bionic install. Works fine! mokutil reports secure-boot enabled and release shows as 4.18.0-16 :)
It should be noted that just installing this kernel itself did not fix the issue, the kernel- modules- extra package must be installed!
Thanks.