I have an Ubuntu 12.10 Desktop PC acting as my headless home server. I can ping it and access the files and folders on the computer with no issues. But after a few hours of running, its networking stops working. I can no longer ping it or access any files on it.
Every morning I cannot access the server. But if I suspend it and then again wake it up, the networking starts working again !
I tried solving it for days with no luck. The PC had Windows Server 2008 on it before Ubuntu and it had the exact same issue.
What could be causing the problem ? For 10 days, I have tried almost everything there is in terms of OS/software configuration, registry tweaks, etc. Doesn't seem like a software issue.
I have an ASUS P8Z77-V motherboard. I feel that this board could be having some power saving features if there is no mouse or keyboard input for hours. Since this is a headless server, it might be the cause. But I read the manual for the motherboard and googled but still couldn't find any clue towards some sort of power saving feature.