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Precision OCX has to start twice to get working in GTX 1080 Ti SLI?

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SilentMarket
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2017/07/13 10:34:38 (permalink)
I recently purchased two FTW3 1080Tis and they perform well except the Precision OCX software ( I need it to switch fan profile ) will stop responding in SLI mode for the first time after computer reboot.
It has to start twice. The first time it will stop responding and the second time it starts without crash then fan profile is loaded because I can hear the fans become louder as I set a higher spin speed for the upper card.
In SLI mode it identifies the lower second card as GPU1 and the upper primary card as GPU 2.
With SLI disabled it properly starts and identifies the GPUs in right order. 
I've tried to reinstall it and delete fan profile and uninstall Nvidia drivers with DDU. It doesn't work though.
post edited by SilentMarket - 2017/07/13 10:43:43
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    CriticalHit_NL
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    Re: Precision OCX has to start twice to get working in GTX 1080 Ti SLI? 2017/07/17 13:56:38 (permalink)
    SilentMarket
    It has to start twice. The first time it will stop responding and the second time it starts without crash then fan profile is loaded because I can hear the fans become louder as I set a higher spin speed for the upper card.

    This behaviour also happens to me with one card, the first load always restarts after a second or 10 before it's fully usable, not sure what the deal is with that.
    SilentMarket
    In SLI mode it identifies the lower second card as GPU1 and the upper primary card as GPU 2.
    With SLI disabled it properly starts and identifies the GPUs in right order. 

    This is an issue that has been going on for a while, but I don't recall it being a bug on the old PrecisionX V4.2.1 and older (the rivatuner versions), MSI Afterburner I think will show them in the correct order, but MSI Afterburner doesn't support iCX fans.
    It appears it has to be something about the way the motherboard enlists the device bus and/or the way Windows assigns the device numbering, and Precision just rolls with that.
    Some topics about this issue:
    https://forums.geforce.com/default/topic/953571/geforce-drivers/gpu1-and-gpu2-swapped-possible-driver-issue-gtx-1080-sli-
    https://forums.evga.com/GPU1-is-GPU2-and-GPU2-is-GPU1-m632202.aspx

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