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Title pretty much says it all.

I am using a supermicro board with integrated IPMI support. When I connect remotely I can take control of the mouse and keyboard but the video is totally black (no error displayed).

Onboard video is turned off (jumper setting) and I am using the video output of a PCI-E installed card. Is remote K*V*M only available with onboard video?

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I don't know specifically about SuperMicro, but on all of the HP/Compaq and Sun x86 servers I've ever touched, yes, the remote KVM is directly integrated with onboard video. I don't believe there's any other way to really do it, aside from a serial (dumb) terminal. Is there any reason why you're using a PCI-E video card instead of onboard video? – Jason Antman Sep 28 '11 at 21:10
@Jason we are using Cuda on Tesla GPU and were told by our vendor that there were drivers issue with the onboard video. (But I have not doubled checked). – Benoittr Sep 29 '11 at 17:50
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Yes, it does.

The IPMI controller and video controller are linked, which is what allows the IPMI controller to actually get you the contents of your screen. When you are using an external display adapter, all the "rendering" takes place on the card, so the IPMI adapter has no idea is being displayed.

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