Re: Problem of using a PCI device in a Hot Plug PCI slot

From: Igor Sharovar
Date: Tue Sep 26 2006 - 16:22:10 EST

I checked these pins. They are grounded.
I wonder if a Hot Plug slot doesn't have enough power to feed the card. I measured voltages (12, 3.3 and 5). I saw a spark during power on, but this spark never goes to a normal voltage level. For example, in the +12v pin I saw a spark +3.5 volt.


From: Robert Hancock <hancockr@xxxxxxx>
To: Igor Sharovar <ig_sh@xxxxxxxxxxx>
CC: linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: Problem of using a PCI device in a Hot Plug PCI slot
Date: Mon, 25 Sep 2006 18:16:32 -0600

Igor Sharovar wrote:

A PCI card, which developed in my company, isn't powered in a Hot Plug PCI slot( Intel server ).
During boot-up, a populated slot powers up, then immediately powers off.
The card works fine in non Hot Plug slots. The Hot Plug PCI specification says that a regular PCI card should at least be powered in a Hot Plug PCI slot.
What are requirements for running a PCI card in a Hot Plug slot.
I would appreciate any help.

Maybe the card isn't grounding the right PRSNT pins to allow the machine to detect the presence of the card?

Robert Hancock Saskatoon, SK, Canada
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