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i am running a mining rig a couple of days on windows7.
But on windows i have the problem with the "dummy plug".
So i switched to ubuntu today. first it seems to run smothly after starting the first miner.
The first GPU was running about 380MHs
I started the 2nd GPU and suddenly the first GPU runs only at 150Mhs
and the second GPU @100mhs
At the first moment i thought that i set the wrong devices but no.
GPU1 runs @ d0 GPU2 @d3
if i start the other 3 GPU's they slow down more and more.
Any Ideas?
Here some technical facts:
Code:
Adapter 0 - AMD Radeon HD 6990
Sensor 0: Temperature - 42.50 C
Adapter 1 - AMD Radeon HD 6990
Sensor 0: Temperature - 65.50 C
Adapter 2 - ATI Radeon HD 5700 Series
Sensor 0: Temperature - 38.00 C
Adapter 3 - ATI Radeon HD 5800 Series
Sensor 0: Temperature - 32.00 C
Adapter 4 - ATI Radeon HD 5700 Series
Sensor 0: Temperature - 45.00 C
You can see that GPU1 and GPU4 are running.
Code:
fglrxinfo
display: :0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: AMD Radeon HD 6990
OpenGL version string: 4.1.10666 Compatibility Profile Context
display: :0 screen: 1
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: AMD Radeon HD 6990
OpenGL version string: 4.1.10666 Compatibility Profile Context
display: :0 screen: 2
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5700 Series
OpenGL version string: 4.1.10666 Compatibility Profile Context
display: :0 screen: 3
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5800 Series
OpenGL version string: 4.1.10666 Compatibility Profile Context
display: :0 screen: 4
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 5700 Series
OpenGL version string: 4.1.10666 Compatibility Profile Context
CPU runs @100%
I hve tried poclbm, phoenix/phatk
Crossfire is switched Off.
It is the same like in this topic:
http://forum.bitcoin.org/index.php?topic=3359.msg160724#msg160724
but cant write there. :/
Thank you for any feedback.
