I'm the proud new owner of a Raspberry Pi and have it up and running now with VPN/SSH/X11VNC.
This morning I had it booted up on a TV on my table where I was working on it. Went to work and have been working on it remotely via VNC over my VPN just fine. I came to a point where I had to reboot which all went fine, I've logged back in and reconnected to the VNC session – however the resolution is stuck in 656×416, so not really usable.
Now I'm guessing that this is because the Pi booted up without the TV/HDMI monitor being on.
Is there a way by terminal or otherwise I can force it bigger?
I read about HDMI groups and modes you can put in a config file then reboot, but wasn't sure if this would then affect my monitor when I get home and try to log on locally.
Or is the key here to establish what HDMI group/mode it is using when using locally and then adding to the config file used on bootup?