Blender shows no Nvidia Driver after waking up from standby

[brahma]

check this possible solution from the stable update annoucement:

@philm

System freeze on suspend

A feature in systemd 256 freezing a user session when suspending may freeze the system.

• [SOLVED] System freezes after sleep since update / Newbie Corner / Arch Linux Forums
• Systemd 256 may break sleep

The issue is most prominent with Nvidia systems but reports exist that it may affect other systems as well.

System freezes for 60 seconds and then wakes back up or hangs after waking up

Since systemd v256, systemd freezes user.slice before sleeping. This process can fail due to kernel bugs, particularly when KVM is in use.[13] [14]

Messages in the logs will contain Failed to freeze unit 'user.slice' before sleep. When such an issue occurs, trying to login (start another session) would fail with pam_systemd(process:session): Failed to create session: Job 9876 for unit 'session-6.scope' failed with 'frozen'.

To temporarily revert back to the old behavior, edit systemd-suspend.service, systemd-hibernate.service, systemd-hybrid-sleep.service, and systemd-suspend-then-hibernate.service with the following drop-in:

[Service]
Environment="SYSTEMD_SLEEP_FREEZE_USER_SESSIONS=false"

– Power management/Suspend and hibernate - ArchWiki