Are you running Windows or linux with on your setup? I'm looking for more info on the power throttling under linux, but so far have only found anything useful for Windows.

Forgot to come back and update this thread, but I have got everything working. After a couple more attempts are reinstalling the drivers/sdk, I was able to get clinfo to detect the cards properly, but only as root. At this point I'm not going to worry about where the permissions are off that I can't do so as a normal user.

I did notice that leaving the fans on auto they typically never spun up past about 40%. I've gone to manually setting the speeds on them for the moment. I can keep the temps in the low 80s at 50-60% fan speed, and currently at 100% is where the temp is maxing out just about 80, but I'm getting somewhat better performance from the card as well. Currently I'm running in the 700-725MH/s range up from more like 650-675.

I haven't increased the voltage beyond the onboard switch being set to position 1. After some more experimentation thought, it seems to be heat related. When both are initially started, I can usually get a minute or so where they are running at ~400MH/s each. Then as the temp climbs and levels out in the low 80s, the hash rate drops a bit and settles. When I opened the case and got some additional fans going, if I can keep the temps in the mid to upper 70s under load, both cores are able to stick near 400MH/s. So with that in mind, any ideas for the most efficient way to improve cooling with this card? The case is a big with lots of room, and all cabling is routed on the back side of the motherboard. Currently has 3x200mm fans and a 140mm as well, so I think airflow inside the case is going to be to tough to improve. I suppose water cooling might be an option? I don't have a ton of experience water cooling, but I assume there are blocks available for the 6990 by now?

Currently mining using the following:

 ./poclbm.py  -d0 -w 128 -r 5 -f 0 -v
 ./poclbm.py  -d1 -w 128 -r 5 -f 0 -v

When the first one is launched it runs at 400MH/s until the second is launched at which device 0 levels off around 350 and d1 around 325. Crossfire is disabled. I've also tried an equivalent setup with phoenix using both the poclbm and phatk kernels. This one edges them out just slightly for my setup.

CPU generally never jumps over a few percent. Either card, when run on it's own, is able to hit 400MH/s. Also, the setup is already headless.

I can keep the aggression high since its a server that I don't need a responsive desktop on. Also, temps under load stay in the upper 70s to low 80s range, regardless of one or both cores going.

The one thing I did notice however, is that when I'm only mining with one core, GPU usage as displayed by aticonfig --odgc is a constant 99. However, mining on both cores results in usage on both to alternate between 100% and 0%.

So I finally got my 6990 setup running correctly under Ubuntu 11.04. Been doing some testing with the various settings, and so far with a single core running I'm able to hit just over 400MH/s. However, as soon as I enable the second core, both drop to more in the 340MH/s range. Is this to be expected with a dual GPU card like this? Are there any settings you'd suggest modifying to see if it makes a difference?

Well, finally able to get things running. After yet another wiping of the drivers and SDK, another reinstall is working, at least when run as root. Still unable to detect the cards as a normal user account however, but this seems like it should be much easier to fix. Any ideas where the permissions might be goofy that clinfo is able to run, but only detects the card as root?

Minty, just curious, what brand are your 3 6990s? Wondering if that might possibly have anything to do with whether or not the cards are detected properly. For what it's worth I've got the Diamond version.

My only other thought is that at least in my case, I started with what I originally had built as a server/network storage box, so it was only accessible via ssh with no X components installed at all. I've done a pretty minimal X install, but I'm wondering if there are still components I'm missing since I had a non-standard starting point with the Ubuntu install. I think my next step is going to be a fresh install, I'm just a bit hesitant to do so as I do have enough other things running on here currently that it would be quite a hassle to properly back up and reinstall them as well.

I appreciate the help so far. I have tried to install process a few times for the SDK, but always with the same results. I'm using the 64bit SDK from http://download2-developer.amd.com/amd/APPSDK/AMD-APP-SDK-v2.4-lnx64.tgz. For the "install" process, I've unpacked to /opt, set the associated environment variables:

export AMDAPPSDKROOT=/opt/AMD-APP-SDK-v2.4-lnx64/
export AMDAPPSDKSAMPLESROOT=/opt/AMD-APP-SDK-v2.4-lnx64/
export LD_LIBRARY_PATH=/opt/AMD-APP-SDK-v2.4-lnx64/lib/x86_64/:/lib:/usr/lib:/usr/local/lib
export ATISTREAMSDKROOT=/opt/AMD-APP-SDK-v2.4-lnx64/

export DISPLAY=:0


It seems to be working to at least some degree as running clinfo does detect both of my CPU cores, just no GPUs. Also, I've noticed that if I try running clinfo as root with sudo, it does error out with:

/opt/AMD-APP-SDK-v2.4-lnx64/bin/x86_64/clinfo: error while loading shared libraries: libOpenCL.so.1: cannot open shared object file: No such file or directory

However, that libOpenCL.so.1 does exist and is found properly when run as a standard user.

Below is the output after trying aticonfig --initial -f --adapter=all again along with a reboot

sudo aticonfig --lsa
* 0. 03:00.0 AMD Radeon HD 6990
  1. 04:00.0 AMD Radeon HD 6990

* - Default adapter


poclbm/poclbm.py
No protocol specified
Wrong platform or more than one OpenCL platforms found, use --platform to select one of the following

•     AMD Accelerated Parallel Processing
[1]     AMD Accelerated Parallel Processing


poclbm/poclbm.py --platform 0
No protocol specified
No device specified or device not found, use -d to specify one of the following


•     Intel(R) Celeron(R) CPU          430  @ 1.80GHz

poclbm/poclbm.py --platform 1
No protocol specified
No device specified or device not found, use -d to specify one of the following

•     Intel(R) Celeron(R) CPU          430  @ 1.80GHz

The --lsa flag does correctly return the cards. I'm using SDK 2.4 since I've got a 6990 and from what I can tell nothing prior supports it. The DISPLAY and other various environment vars are set correct to no avail.

minute_of_angle, I tried your suggestion and in the end the xorg.conf was repopulated with the same sections that were present prior to deletion. Still having the same issue in that fglrxinfo detects the card correctly, but clinfo / any of the miners are unable to do so.

For what it's worth, my xorg.conf is essentially identical to yours, except for only have a single 6990 vs. your 3. I have no boot issues using mine:

I'm in the exact same boat as you, everything seemingly is installed correctly, but clinfo / poclbm only sees my CPU. My setup is Ubuntu 11.04 (though I also tried 10.04 and 10.10 previously with the same results) with the 2.4 sdk, and 11.5 catalyst drivers.

Any ideas?

I've been following mostly Inaba's guide at http://forum.bitcoin.org/?topic=7514.0, but using the 2.4 SDK. I am also using the 11.5 version of the ATI driver. However, I am unable to get either clinfo or poclbm to detect the card. lspci, fglrxinfo, aticonfig --lsa all seem to see the card correctly. I've done plenty of searching and looked through all the guides I can find, but so far no solution that has worked. Any suggestions to get this running would be greatly appreciated.

lspci -v :
03:00.0 VGA compatible controller: ATI Technologies Inc Device 671d (prog-if 00 [VGA controller])
        Subsystem: ATI Technologies Inc Device 0b2a
        Flags: bus master, fast devsel, latency 0, IRQ 50
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at e5000000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at 9000 [size=256]
        [virtual] Expansion ROM at e4000000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Capabilities: [150] Advanced Error Reporting
        Kernel driver in use: fglrx_pci
        Kernel modules: fglrx


04:00.0 Display controller: ATI Technologies Inc Device 671d
        Subsystem: ATI Technologies Inc Device 1b2a
        Flags: bus master, fast devsel, latency 0, IRQ 51
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at e7000000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at a000 [size=256]
        [virtual] Expansion ROM at e6000000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
        Capabilities: [150] Advanced Error Reporting
        Kernel driver in use: fglrx_pci
        Kernel modules: fglrx

fglrxinfo:

display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: AMD Radeon HD 6990
OpenGL version string: 4.1.10750 Compatibility Profile Context



display: :0.0  screen: 1
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: AMD Radeon HD 6990
OpenGL version string: 4.1.10750 Compatibility Profile Context

aticonfig --lsa:

* 0. 03:00.0 AMD Radeon HD 6990
  1. 04:00.0 AMD Radeon HD 6990

* - Default adapter

clinfo:
Number of platforms:                             1
  Platform Profile:                              FULL_PROFILE
  Platform Version:                              OpenCL 1.1 AMD-APP-SDK-v2.4 (595.10)
  Platform Name:                                 AMD Accelerated Parallel Processing
  Platform Vendor:                               Advanced Micro Devices, Inc.
  Platform Extensions:                           cl_khr_icd cl_amd_event_callback cl_amd_offline_devices


  Platform Name:                                 AMD Accelerated Parallel Processing
Number of devices:                               1
  Device Type:                                   CL_DEVICE_TYPE_CPU
...

poclbm.py:

No protocol specified
No device specified or device not found, use -d to specify one of the following

•      Intel(R) Celeron(R) CPU          430  @ 1.80GHz