Comment 20 for bug 1894778

Aksahat: The kernel 5.8.0-42 is not yet in proposed, on Ubuntu 20.04. For now only on Ubuntu 20.10.

The alternative, until it is included in Ubuntu 20.04.2 is this:

sudo apt install linux-oem-20.04

This way, the OEM 5.6 kernel is installed, which is fix.

Then you have to uninstall the hwe kernel:

sudo apt remove --purge --install-recommends linux-generic-hwe-20.04

To list installed kernels:

sudo dpkg --list | grep linux-image
and:
sudo dpkg --list | grep linux-headers

Clear all 5.8 kernels with:

sudo apt-get --purge remove linux-xxx

That or wait for it to be fixed in ubuntu 20.04 with kernel 5.8