help - 0 GPUs detected

[Uniphase21]

I have built a mining rig for litecoin

The mother board is ASRock 990 fx extreme9

I have 4 Gigabyte Radeon R9 290 cards installed.

I ran through this tutorial in detail:

http://litecoinstuff.com/tutorials/how-to-configure-xubuntu-cgminer-and-r9-290x-gpus-to-mine-litecoin-and-altcoin

I got to the end and cg miner has the following error message

 [2013-12-31 13:06:50] CL Platform 0 vendor: Advanced Micro Devices, Inc.                   
 [2013-12-31 13:06:50] CL Platform 0 name: AMD Accelerated Parallel Processing                   
 [2013-12-31 13:06:50] CL Platform 0 version: OpenCL 1.2 AMD-APP (1214.3)                   
 [2013-12-31 13:06:50] Error -1: Getting Device IDs (num)                   
 [2013-12-31 13:06:50] clDevicesNum returned error, no GPUs usable                   
 [2013-12-31 13:06:50] 0 GPU devices max detected

Anyone have any ideas on what to do?

[iram4049]

what drivers you installed?

[Uniphase21]

I got it all figured it out, thanks man