Quote from: sdz123 on September 20, 2013, 09:08:30 PM

Quote from: kano on September 20, 2013, 01:49:07 PM

The network connection is USB also (on the motherboard of course)
You will most likely find in the system log a comment about the network device failing.

On mine I wrote a cron job that runs every minute and checks the network and if it's not working, it send cgminer a quit and shuts down the RPi
The main reason for this is that obviously pulling the power out while the RPi is running is a bad idea, and once the network dies it seems it wont restart without a reboot anyway

Sounds like Raspbian have screwed up something there with the update Sad

The network dropout isn't unknown, just it seemed to have become quite rare at least up until recently.
I've had it happen once on Arch (but only once) but a few times on Raspbian (used to sometimes happen when I plugged in an Icarus pl2303)

Interesting. Makes sense. Could you share your cron job ? It's not ideal but should get me hashing again until Raspbian gets a fix.

The last few entires in my syslog before I have to hard reset is as follows :

Quote

Sep 20 16:00:22 raspberrypi kernel: [ 59.983209] netlink: 20 bytes leftover after parsing attributes.
Sep 20 16:00:22 raspberrypi kernel: [ 59.983245] netlink: 20 bytes leftover after parsing attributes.
Sep 20 16:00:22 raspberrypi kernel: [ 59.983392] netlink: 20 bytes leftover after parsing attributes.

I have done some more testing. I can't get the RPi to loose its network connectivity and need resetting apart from when running cgminer. I've tried hammering the NIC with heavy downloading and it handles it fine. I've removed all but 3 Block Erupter USB's just in case it was a power issue but it's not. Im running a D-Link DUB-H7 with 5 Erupter's total.

I wonder whats so specific about cgminer that causes the nic to hang under the current Raspbian...

It's the combination of using other USB devices and networking, as internally the network device is effectively just another USB device.