Tried ppa drivers 410, 390, same issue.
I've discovered that although restarting gdm3 does not work:
$ sudo /etc/init.d/gdm3 stop $ sudo /etc/init.d/gdm3 start
If I sudo to root, stop gdm3, start Xorg -verbose, stop it, restart gdm3, the displays wake up.
Tried ppa drivers 410, 390, same issue.
I've discovered that although restarting gdm3 does not work:
$ sudo /etc/init.d/gdm3 stop
$ sudo /etc/init.d/gdm3 start
If I sudo to root, stop gdm3, start Xorg -verbose, stop it, restart gdm3, the displays wake up.