Running Claymore 12.4 and the latest rx480 drivers.
Turned the PCI slots to Gen1 and turned off the onboard video.
GPUs are RX 480 nitro (not nitro +) 4gb sapphires
Mobo is a biostar TB85.
Had the risers in another machine and they worked fine. Ruled them out.
Occasionally the machine craps out and the screen goes black. could have been me mucking around in the case though..
The issue is that the second GPU reports a negative hash rate. Right now it is at -27. The first card is running fine. All seems well for the first hour or two, but then this happens. or claymore reports opencl failed call and the machine eventually freezes. Any advice?