Frage No boot with 10th GPU

[pubartos]

Hi !

Strange behavior: Last weeks I mined with 4 Rx580 and 8 Rx5700XT in 1 rig, everything worked fine.

Now I tried to replace all 4 RX580 with 2 new 5700XT cards but rig does not boot anymore. Bios is not reachable as well but fans are spinning.

If I disconnect 1 random 5700XT, rig starts up though.

In my opinion I can exclude risers, cables, GPUs and board bios.
Power supply could be an issue but does not make sense for rig startup due to standby power consumption.

What else could make this trouble?

BR

 

[pubartos]

Played around a little bit and the picture is:
Only if the 10th GPU is a 5700(XT) the rig will not boot.
9x5700(XT) with 3xRX580 works like a charm.

What is special about many 5700(XT) ?

 

[pubartos]

Found the issue, it's because of the mining board asrock h110 pro btc+ / default BIOS settings.

Follow the BIOS settings guide here, worked at least for me.

H110 Pro BTC+ Cannot boot with more than 9 GPU

Thanks heaps for this, this info helped me solve my problem.

forum.asrock.com

BR