Comment 31 for bug 1957094

Setup focal on 201606-22344 in cert pool, this system's GPU can supported both with nvidia-driver-390 and nvidia-driver-470. Installed ubuntu-drivers-common, nvidia-settings from focal-proposed repository. With nvidia-driver-390, try to setup on-demand mode with "prime-select on-demand", system will fall back to nvidia mode after reboot. With nvidia-driver-470, setup on-demand mode with "prime-select on-demand", system will change to on-demand mode after system reboot. The behaviour of nvidia-drivers-common and nvidia-settings in focal-proposed is as expected.