Short version - this card has one broken die, and one usb ripped out, but was still hashing flawless for weeks at 925mhz~575gh/s.
I had a 5 second blackout this morning, and now the device cycles hotplug:
[2014-09-05 19:40:25] HFA : OP_USB_INIT failed! Operation status 6 (All cores failed diagnostics)
[2014-09-05 19:40:32] HFA: Found device with name Dabs
[2014-09-05 19:40:32] Hotplug: Hashfast added HFA 1
[2014-09-05 19:40:41] HFA : OP_USB_INIT failed! Operation status 6 (All cores failed diagnostics)
[2014-09-05 19:40:59] HFA: Found device with name Dabs
[2014-09-05 19:40:59] Hotplug: Hashfast added HFA 2
[2014-09-05 19:41:08] HFA : OP_USB_INIT failed! Operation status 6 (All cores failed diagnostics)
[2014-09-05 19:41:15] HFA: Found device with name Dabs
[2014-09-05 19:41:15] Hotplug: Hashfast added HFA 3
[2014-09-05 19:41:24] HFA : OP_USB_INIT failed! Operation status 6 (All cores failed diagnostics)
[2014-09-05 19:41:41] HFA: Found device with name Dabs
[2014-09-05 19:41:41] Hotplug: Hashfast added HFA 4
[2014-09-05 19:41:50] HFA : OP_USB_INIT failed! Operation status 6 (All cores failed diagnostics)
[2014-09-05 19:41:57] HFA: Found device with name Dabs
[2014-09-05 19:41:57] Hotplug: Hashfast added HFA 5
All other equipment on that circuit is flawless, including another hab at 950Mhz~725gh/s.
Has Dabs passed away? Is there any troubleshooting I can do?
Thanks for the suggestion, it worked. Got a few weird busy errors when adjusting the per-die settings. Looks like the FW settings were borked.
Reflashed FW, rewrote hftool.py settings, and it's back up and running. Thanks!