Since a view days 1 rack with rx 470 is making troubles.
Hangs in OpenCL Fall (always same GPU) after reboot it stuck offen in Boot cause a network-job is waiting. After 5:30 minute counter it boots up, but it cant Connecticut to the pool and is still offline in dashboard.
After fixingit with hardshutdown, wait 5 Minuten and changing lanport it boots AS usual.
But now there are New lines i never habe Seen. See picture below
https://drive.google.com/file/d/0B8mc7WOJIqybdnlNbW9UU21heGc/view?usp=drivesdk