Author

Topic: Only 1 out of two video cards running on rig (Read 587 times)

legendary
Activity: 2212
Merit: 1001
January 11, 2014, 07:07:13 PM
#6
I'm using a Gigbyte 990FXA-UD3 with a 7970 & 5870 for Litecoin,Running about 900khs  Grin

You need to add a card,install vid driver,shut down,add a card,install vid driver,etc...

I'm with Easy on checking your bios settings.Or you may in fact have a defective board  Roll Eyes

BTW,I found GUIminer Alpha is WAY easier to use for Litecoin mining  Cool

https://litecointalk.org/index.php?topic=7722.0

Use one instance per GPU & CPU  Wink

Here's for Nvidia:

http://www.litecoinminingmadeeasy.com/cudaminer-windows-guide.php

Good Luck!!!  Wink
hero member
Activity: 854
Merit: 500
einc.io
I have never mined Litecoin before, I trade it with BTC.
When I mined BTC with AMD GPU'S, Windows don't see more than 1 GPU, I have to use dummy plugs for a multi GPU setup.
It took AMD more than 1.5 years to release drivers that are capable for Windows to see more than 1 GPU.
If you know how to setup linux they work flawless with multi GPU setups.

You already have installed the latest SDK from AMD?
Read your motherboard manual and go into the BIOS.
I think the problem is there.
I had a similar  problem with an Asus M4A89GTD PRO/USB3
sr. member
Activity: 260
Merit: 250
I'm using the slot farthest from cpu but its the only one that works--  I have tried each slot with a total of one card at a time  using windows 7 and cg miner--- mining litcion
hero member
Activity: 854
Merit: 500
einc.io
What are you mining?
You using Windows?
hero member
Activity: 490
Merit: 500
Slot 0, usually the 16x one nearest the CPU, has to be populated first before you can add other cards.

Did you try a second card? Read the motherboard manual and see which it says is slot 0.
sr. member
Activity: 260
Merit: 250
I've got a ASRock 990FX EXTREME3 AMD Quad CrossFireX nVidia Quad SLI SATA3 USB3 Motherboard--and only one slot is reading my 7950 will I  need to replace or can this be fixed?
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