Help - I'm only getting half of the expected hash rate

c789

hero member

Activity: 850

Merit: 1000

Thanks for your inputs...after several hours of troubleshooting this I am ecstatic to announce the solution: a monitor must be plugged in. Huh

Now I'm getting the hash rate I should be getting for both cards. Only 1 monitor is plugged into 1 card.

I thought that having to have a monitor was no longer an issue, but evidently it is. Now I'm off to find a dummy plug to see if that will suffice. I've been viewing my "screen" through X11VNC...sure beats hauling a monitor around from computer to computer. I'll post back after I've given the dummy plug a try.

Thanks for your help, and I hope this helps you if you're experiencing the same issue.

**UPDATE**: I tried a makeshift dummy plug (http://blog.zorinaq.com/?e=11) with 68 and 82 ohm 1/4W resistors, in all of the possible 4 pins, and it didn't work for me. The only thing that works is plugging in the monitor, starting cgminer, and unplugging the monitor.

LivesUnderTheBridge

newbie

Activity: 28

Merit: 0

Quote from: c789 on April 05, 2013, 08:02:15 PM

I have two 6770's (one XFX, the other Sapphire) and each should get around 200MH. I'm only getting 187MH total.

This is on cgminer 2.11.4 on Xubuntu 12.04 64-bit.

Code:

cgminer -n

[2013-04-05 19:24:30] CL Platform 0 vendor: Advanced Micro Devices, Inc.
[2013-04-05 19:24:30] CL Platform 0 name: AMD Accelerated Parallel Processing
[2013-04-05 19:24:30] CL Platform 0 version: OpenCL 1.2 AMD-APP (1084.4)
[2013-04-05 19:24:30] Platform 0 devices: 2
[2013-04-05 19:24:30] 0 Juniper
[2013-04-05 19:24:30] 1 Juniper
[2013-04-05 19:24:30] GPU 0 AMD Radeon HD 6700 Series hardware monitoring enabled
[2013-04-05 19:24:30] GPU 1 AMD Radeon HD 6700 Series hardware monitoring enabled
[2013-04-05 19:24:30] 2 GPU devices max detected

On Q (exit), I get:
[2013-04-05 19:24:08] Summary of per device statistics:
[2013-04-05 19:24:08] GPU0 | (5s):0.000 (avg):94.06Mh/s | A:41 R:0 HW:0 U:1.2/m I: 9
[2013-04-05 19:24:08] GPU1 | (5s):0.000 (avg):93.95Mh/s | A:45 R:0 HW:0 U:1.3/m I: 9

Here's the command I run:

Code:

cgminer -o stratum+tcp://stratum.btcguild.com:3333 -u MYUSER -p 123 -o http://pool.50btc.com:8332 -u MYUSER -p 1 -I 9,9

I think maybe GPU 1 is not being used because its temp is only 27. What am I missing?

with your miner running, in another terminal window, type...

Code:

aticonfig --adapter=all --odgc

this will show the load on both your cards. Only one is probably working.

Vuxil

newbie

Activity: 28

Merit: 0

All I can say is "Welcome to the club" Sad

https://bitcointalk.org/index.php?topic=164825.20

Possible fix is to use a Non-Debian based distro (I still need to test this, I'm thinking there are broken packages somewhere in Deb or Ubuntu)

For sure fix is use Windows (Tested and works)

Looks like it's more than just a couple of us having this problem.

c789

hero member

Activity: 850

Merit: 1000

I have two 6770's (one XFX, the other Sapphire) and each should get around 200MH. I'm only getting 187MH total.

This is on cgminer 2.11.4 on Xubuntu 12.04 64-bit.

Code:

cgminer -n

[2013-04-05 19:24:30] CL Platform 0 vendor: Advanced Micro Devices, Inc.
[2013-04-05 19:24:30] CL Platform 0 name: AMD Accelerated Parallel Processing
[2013-04-05 19:24:30] CL Platform 0 version: OpenCL 1.2 AMD-APP (1084.4)
[2013-04-05 19:24:30] Platform 0 devices: 2
[2013-04-05 19:24:30] 0 Juniper
[2013-04-05 19:24:30] 1 Juniper
[2013-04-05 19:24:30] GPU 0 AMD Radeon HD 6700 Series hardware monitoring enabled
[2013-04-05 19:24:30] GPU 1 AMD Radeon HD 6700 Series hardware monitoring enabled
[2013-04-05 19:24:30] 2 GPU devices max detected

On Q (exit), I get:
[2013-04-05 19:24:08] Summary of per device statistics:
[2013-04-05 19:24:08] GPU0 | (5s):0.000 (avg):94.06Mh/s | A:41 R:0 HW:0 U:1.2/m I: 9
[2013-04-05 19:24:08] GPU1 | (5s):0.000 (avg):93.95Mh/s | A:45 R:0 HW:0 U:1.3/m I: 9

Here's the command I run:

Code:

cgminer -o stratum+tcp://stratum.btcguild.com:3333 -u MYUSER -p 123 -o http://pool.50btc.com:8332 -u MYUSER -p 1 -I 9,9

I think maybe GPU 1 is not being used because its temp is only 27. What am I missing?

Topic: Help - I'm only getting half of the expected hash rate (Read 2262 times)