Print Page - Help requested - HD 7850's, CGMiner, and Linux

I posted this in another subforum but found this one might be more appropriate, so I am reposting here.

First of all, I'm running 2 Gigabyte AMD Radeon HD 7850 1GB (http://www.amazon.com/dp/B009LTUC90/ref=pe_175190_21431760_M3T1_ST1_dp_1)

Rest of my setup is 2GB of RAM, and Xubuntu running off of a flashdrive

I followed the steps at https://docs.google.com/document/d/1Gw7YPYgMgNNU42skibULbJJUx_suP_CpjSEdSi8_z9U/edit# to get ATI drivers and cgminer set up on an Xubuntu install with no problems.

I wrote a bash script to start CGIMiner, and it does in the following manner:

Code:

#!/bin/sh
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
./cgminer -o http://ppcpool.bitparking.com:20098 -u user -p pass --api-listen --api-network -I 14 --auto-fan --gpu-engine 1100 --gpu-memclock 1000

However, I am only getting ~375mh\s? Any ideas?

Here is the CGMiner output. It looks like one of the GPUs is not working that much?:

https://i.imgur.com/MD9Gjxr.png

I have my gpu and memory set to what's suggested in this guide already, and no help. For whatever reason my cards are stuck outputting half each of what they should be according to that guide...and I dont have a spare PC to throw the other card in

If I try to press G and change card settings during mining, it sells me the driver reports success but nothing actually changes. One card is actually running at the proper clock speeds, the other one is essentially off (300 mhz gpu, 150mhz RAM)

Crossfire is not enabled

The dev of cgminer suggest not using intensity greater than 11.

do aticonfig --adapter=all --odgc and spam it a few times. Make sure both your cards are cooking.

if 0 is 99% and the other is 0%, you have the same problem that I do, which I think we may need a dummy plug. See

http://www.techpowerup.com/forums/showthread.php?t=86507
and/or
http://blog.zorinaq.com/?e=11

Bitcoin Forum

Bitcoin => Mining support => Topic started by: Vuxil on April 03, 2013, 10:32:40 PM