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Author Topic: Five card rig with 5870s, Ubuntu 11.04, poclbm  (Read 1168 times)
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May 14, 2012, 12:56:10 AM

Hi everyone,

I'm currently working on trying to get all 5 GPUs to mine using Ubuntu 11.04 and poclbm, the specs and installed software are as follows:

2x Rosewill CAPSTONE Series CAPSTONE-750
    ASRock 970 EXTREME4 (3 x16 PCI-E slots, 2 x1 slots)
    AMD Sempron 145
    Patriot 4GB RAM
    WD 40GB HDD
5x 5870 (mix of XFX and Sapphire)

ATI 11.5 driver
SDK v2.4
bitcoin 0.6.2
pyopencl 0.92 (with python installed)
The mining command: python -v -d 1 ********

With this set up, opencl recognizes only two of the card (chances are b/c I mostly followed this guide: So I'm wondering what I have to change for it to recognize all 5, perhaps update the ATI driver version? (to 11.6, 11.12, which one works the best?)

Another possibility is that 3/5 cards are on risers, without molex extenders. I know 59** and 69** cards need them, but I was under the impression that 58** did not need them. Anyone know for sure if 5870s will work without molex?

Many thanks!
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May 14, 2012, 01:36:28 AM

Does lspci list all the cards? Do the bus numbers in lspci and the ones set up in /etc/X11/xorg.conf agree (note xorg.conf uses decimal bus # if > 9, lspci lists it in hex [a = 10, b = 11, etc])? Does xorg.conf have the correct number of devices/adapters/screens for your cards?

Whenever I have problems with cards not being detected, I always check those things first.

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