Cron job resetting hardware?

[Tom Horsley]

This bug:

https://bugzilla.redhat.com/show_bug.cgi?id=958326

has gotten me doing crazy things like setting up my android
camera to take time lapse pictures of the screen every minute
to find out exactly when it happens so I can look in the logs
to see what was going on then :-).

Last night, the screen went funny between 1:16 am and 1:17 am.
In /var/log/messages I found this sort of stuff:

Aug 16 01:17:08 zooty bluetoothd[453]: bluetoothd[453]: Endpoint registered: sender=:1.5382 path=/MediaEndpoint/HFPAG
Aug 16 01:17:08 zooty pulseaudio[17966]: [pulseaudio] module.c: Failed to load module "module-esound-protocol-unix" (argument: ""): initialization failed.
...

Almost like something came around and reset a bunch of
hardware at the same time the screen flaked out (though
I found no messages at all for anything related to the
intel video drivers).

Does anyone know of something that runs in cron (or maybe
systemd) that helpfully resets a lot of hardware nightly?

This whole thing is getting more and more mysterious.