I have 3 rigs running 6x 270 GPUs each. Most are Gigabyte, but a few are Asus. I get anywhere between 450-490 kh/s per GPU. At least once a day one or two of the rigs crashes, and there seems to be two types of failures:

1. The first type of failure the GPUs go to zero load and miner restart will usually get things going.

2. The second type of failure the GPUs are still under load but BAMT shows no mining activity, and SSH login is very laggy. A reboot is usually required to fix this.

Failure # 2 above often results in this message upon reboot:

xauth: (argv):1: merge: unable to open file /home/user/.Xauthority

Sometimes it takes a few reboots to get things running again. This is becoming frustrating because i cant babysit these miners all day and reboot them every time one freezes.

What do I do?