Setup focal on 201606-22459 in cert pool and install nvidia-driver-390 on target system. Then install nvidia-settings and ubuntu-drivers-common mentioned in #2. Try to switch on-demand mode with "prime-select on-demand" and nvidia-settings UI. After system reboot, GPU will keep in nvidia mode. And glxinfo works normally.
Setup focal on 201606-22459 in cert pool and install nvidia-driver-390 on target system. Then install nvidia-settings and ubuntu- drivers- common mentioned in #2. Try to switch on-demand mode with "prime-select on-demand" and nvidia-settings UI. After system reboot, GPU will keep in nvidia mode. And glxinfo works normally.