Where to buy HDMI DUMMY PLUGS on eBay ? Aliexpress?

[adaseb]

units dont boot on a reboot without a monitor or a dummy plug.  well RX cards anyway

I don't use dummy plugs on any of my rigs.  I'm currently using the on-board VGA in my Rx 470 rig, but it would boots fine with the on-board VGA disabled as well.  Tried this with H97 Anniversary boards and with an Asus z87.

Are all the GPUs in the rig the RX series? Or do you have 1 GPU that's like an 280X? Because with all my rigs if all the GPUs are RX series, then one of them will hash at 4MH/s until you connect a monitor to it momentarily.

2 Rx 470s and no other GPU cards:

Code:

00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67df (rev cf)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67df (rev cf)

The only reason I use the on-board VGA is so I can use an old monitor with only analog VGA input when I setup the BIOS & install Linux.

Strange it works for you because even with onboard video enabled and a monitor plugged into the onboard video, one GPU always hashes at 4MH/s.

[nerdralph]

2 Rx 470s and no other GPU cards:

Code:

00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67df (rev cf)
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 67df (rev cf)

The only reason I use the on-board VGA is so I can use an old monitor with only analog VGA input when I setup the BIOS & install Linux.

Strange it works for you because even with onboard video enabled and a monitor plugged into the onboard video, one GPU always hashes at 4MH/s.

I did have problems similar to what you're describing (first card staying in the lowest dpm state) when I first tried the AMDGPU-Pro drivers.  I think it was kernel 4.4 and AMDGPU 16.30.
With >= 4.8/16.40 everything is hunky-dory.
http://nerdralph.blogspot.ca/2017/03/amdgpu-pro-1660-on-ubuntu-kernel-4105.html

[Oakey22]

never had a problem myself, running rx480's too