I am new to Ubuntu (11.10) - I installed Ubuntu on a box which has no screen and no keyboard. It is mostly used as a file and media server (i.e. samba + XBMC) and I control it via tightvncserver.
So far so good: I can connect via VNC and view / control the screen remotely.
But after a few days, when trying to connect via VNC, I don't get a response. The media server is still on, ping is fine, but VNC is down. The only solution I have found is to plug a screen and keyboard and reboot. All is then fine but the problem arises again after a few days...
I am not sure how to diagnose the problem (maybe some log files?) or if this is just a configuration issue.
Any help appreciated.