Unable to detect second GPU in Ubuntu.... tried a dummy plug

[bobbobobbo]

Not sure whats going on.... 1 card works fine, yet the second I add another 7950 I get this readout from CGminer:

 [2013-05-17 16:46:01] ADL found less devices than opencl!                   
 [2013-05-17 16:46:01] There is possibly more than one display attached to a GPU                   
 [2013-05-17 16:46:01] Use the gpu map feature to reliably map OpenCL to ADL                   
 [2013-05-17 16:46:01] WARNING: Number of OpenCL and ADL devices did not match!                   
 [2013-05-17 16:46:01] Hardware monitoring may NOT match up with devices!       

and can't get any temp/speed monitoring. I've tried this dummy plug guide here http://blog.zorinaq.com/?e=11 yet still have no luck.... frustrating.

Any ideas?

I have export display=:0, gpu_max_alloc_percent =100, and gpu_sync_objects =1 before my cgminer input.

[mccminer]

What do you get with:

Code:

aticonfig --adapter=all --lsa

[bobbobobbo]

What do you get with:

Code:

aticonfig --adapter=all --lsa

I tried

sudo aticonfig --adapter=all --initial -f

not sure the differences using initial and f but that did the trick, so basically what you posted.

Unfortunately now... I get GPU 1 failure within 2 secs of connecting to a pool.

Error -5: enqueueing kernel onto command queue
then gpu failure and disabling

[Ultraviolet]

I had to switch to Xubuntu 12.04 and 12.8 Catalyst drivers.

You could try just the 12.8 Catalyst drivers if you don't want to reinstall.