I am having some network issues with a custom-built PC running Fedora 16. I have run F16 on a different PC since its release in 2011 and have not had network problems, so I think this may be a software-hardware interaction problem.
Here's what happens: When my PC sits idle for some time (overnight, sometimes just a few hours, I haven't found a pattern yet), the network just dies. I cannot ping hosts (even inside my subnet), traceroute anything, nothing. Running "systemctl restart network" returns a successful "OK", but it does not restore actual network access. I have to restart the OS to restore an active network connection
One way I have found to prevent this is to run a media stream overnight; as long as the stream does not disconnect randomly, this preserves the network connection. The other thing I tried was running a cron script every 30 minutes that runs a traceroute (just to google.com), but this did not prevent the network from dying. (I reduced that to 15 minutes, but haven't been able to test it over a long period yet.)
Any thoughts on where to look or changes to make? I keep an eye on /var/log/messages, but have not been able to identify an error message associated with the network dying.
ASUS PZ868-M Pro Motherboard (onboard NIC), Intel Z68 chipset
Intel i5-2500K CPU
Fairly vanilla install of F16, I keep the kernel up to date.
The motherboard has a UEFI BIOS and I turned off the power saving features.