My GPU is 50hx. Today, after replacing the network cable on the network switch, some graphics cards experienced the above situation. Restarting the device and changing the network cable were useless. The graphics card was removed and the power cable was reconnected, which is also the case。
you will need to troubleshoot each rig individually. find out if the problem gpus share anything such as PSUs or splitters. verify each troublesome gpu is working independently