1. Update the system to the latest without focal-proposed.
2. Enable focal-proposed, and then only install update-manager/1:20.04.10.2 and update-notifier/3.192.30.4 from focal-proposed.
3. Reboot the system and wait for a while.
The notification will pop up and we can see "Improved hardware support" on the certified machines.
I found a way to verify this.
1. Update the system to the latest without focal-proposed. manager/ 1:20.04. 10.2 and update- notifier/ 3.192.30. 4 from focal-proposed.
2. Enable focal-proposed, and then only install update-
3. Reboot the system and wait for a while.
The notification will pop up and we can see "Improved hardware support" on the certified machines.