Comment 0 for bug 1997505

If the GMed image used earlier kernel than 1020-oem, then you would like meet this issue.

1020-oem is in security channel. In jammy the unattende-upgrade will install security fixes by default.

For the I+N platforms, the nvidia driver couldn't be installed for 1020-oem kernel, then user will meet a black screen cause of nvidia modules couldn't be loaded.

Unattended-Upgrade::Allowed-Origins {
        "${distro_id}:${distro_codename}";
        "${distro_id}:${distro_codename}-security";
        // Extended Security Maintenance; doesn't necessarily exist for
        // every release and this system may not have it installed, but if
        // available, the policy for updates is such that unattended-upgrades
        // should also install from here by default.
        "${distro_id}ESMApps:${distro_codename}-apps-security";
        "${distro_id}ESM:${distro_codename}-infra-security";