Serious problem with mining rig, might need face to face support near London

kenshin

Yes, I got 2 x Corsair 860i using Dual PSU 24 pins cable adapter to connect them together.

This is the commands I use in cgminer

#!/bin/sh

export DISPLAY=:0

export GPU_MAX_ALLOC_PERCENT=100

export GPU_USE_SYNC_OBJECTS=1

cgminer --scrypt -o stratum+tcp://stratum.wemineftc.com:4444 -u dragonkid.1 -p 1 --auto-fan --gpu-engine 1010 --gpu-memclock 1250 -I 20 -w 256 --thread-concurrency 21712

kenshin

I got 6 Gigabyte HD7950 GPUs. I also have power risers for all of them. I am using xubuntu with i7 CPU and 8GB RAM. I also have MSI motherboard which suppose to support up to 6 GPUs.

vizay

it’s a tough nut to crack for sure.

How’s the rig built physically? Is there enough space between the cards? (suspecting a yes here but want to rule it out :) )

I’d start by looking into the following areas to narrow down what the fault can be:

* Driver related? (beta drivers or latest stable? try a few different versions of catalyst and the APP libraries)
* OS related? (Try windows or bamt just to rule out that it’s not xubuntu causing the problems)

* Hardware component related? (Make sure that the memory is okay. Try to get hold of another brand of PSU’s to try everything out with)

kenshin

Just finished my 6 GPU rig. First, the basics: are all GPUs recognized by your OS? How did you connect GPUs, CPU, disk drive, risers to those two PSUs?

Yes, when I run aticonfig don’t list all the GPUs. I connect my GPUs with power risers, actually I am using a Coolmaster case LAN Box. And the GPUs are not directly on the mobo.

HopeStillFlies

Yes, when I run aticonfig don’t list all the GPUs. I connect my GPUs with power risers, actually I am using a Coolmaster case LAN Box. And the GPUs are not directly on the mobo.

so when you:

sudo aticonfig --adapter=all --odgt

It only shows 2 cards? Have you verified it’s definitely not the risers by putting a label on the cards that show up good, swapping another card to their spot to see if they do the same thing?

It’s slow going, but when I get a rig going I install one card at a time and re-add with

sudo aticonfig --adapter=all --initial

After each one to troubleshoot if I did something stupid.

uncle_muddy

OK lets do a bit of a rewind here, can you provide a list of all the parts you have please?

PSU, MoBo, Mem, GPU’s, Risers, HDD, O/S, you get the idea.

From there we can probably work it out a lot quicker for you, I’m on Skype if you wanna add me PM me for my details, and quite regularly visit east London if there really is a major problem that can’t be resolved here.

UM

kenshin

OK lets do a bit of a rewind here, can you provide a list of all the parts you have please?

PSU, MoBo, Mem, GPU’s, Risers, HDD, O/S, you get the idea.

From there we can probably work it out a lot quicker for you, I’m on Skype if you wanna add me PM me for my details, and quite regularly visit east London if there really is a major problem that can’t be resolved here.

UM

PSU = 2 x Corsair 860i

Mobo = MSI Z77a-GD65

Memory = 2 x 4 RAM

GPU’s = Gigabyte HD7950

Riser = Have both 1 and 16 PCI slot power risers

HDD = 30 GB SSD

O/S = Xbuntu 13.05 (I tried 13.10 and 12.05 they both gave me problem)

I will try to fix it here, but if no success. I will reward you for coming down to fix this. :)

uncle_muddy

Have you tested each card in turn, single card in to the MoBo test it, shut it down rinse and repeat for all 6 cards?

Once that is done pick a card and test all the risers 1 at a time

uncle_muddy

I’ve just had a problem with 1 of my GPU’s would only work when connected to a full width 16x slot, so had to order another riser in. Everything else works fine with a 16x --> 1x riser. Took a couple of days of testing to tie it down to being the problem.

svennand

Sounds like your mobo isn’t properly set up in bios to handle all the gpuÂ¨s connected on the pci-e.

That the mobo has x numbers of pci-e doesn’t really mean that it can support the same x amount of gpuÂ´s without some tweaking.

I have a bunch of mobos, and they truly are a nightmare sometimes to get all the gpuÂ´s to be recognized.

Given that aticonfig doesn’t display more than two cards i would say that this your problem.

Take out one card at the time to check which card actually gets recognized, then you get a better picture of which pci-e ports that don’t work, look in manual if some of em are disabled when using 16X slot etc, might be one of em requires the use of ivy bridge processor and the list goes on. I HATE MOBOS! can’t wait to test out my asrock h61 btc mining mobo :) if that is straightforward awesome i might just swap out all my mobos for it.

kenshin

Sounds like your mobo isn’t properly set up in bios to handle all the gpuÂ¨s connected on the pci-e.

That the mobo has x numbers of pci-e doesn’t really mean that it can support the same x amount of gpuÂ´s without some tweaking.

I have a bunch of mobos, and they truly are a nightmare sometimes to get all the gpuÂ´s to be recognized.

Given that aticonfig doesn’t display more than two cards i would say that this your problem.

Take out one card at the time to check which card actually gets recognized, then you get a better picture of which pci-e ports that don’t work, look in manual if some of em are disabled when using 16X slot etc, might be one of em requires the use of ivy bridge processor and the list goes on. I HATE MOBOS! can’t wait to test out my asrock h61 btc mining mobo :) if that is straightforward awesome i might just swap out all my mobos for it.

Yeah, I am trying to only get up to 3 GPUs per rig now. If I only use 2 it is fine, but when I got the 3rd one, it is SICK. So I read that I need to change the --gpu-vddc voltage 10 increment at a time. I am trying to do that. Anyone know how high I can get without burning the GPU?