gcminer with ATIRADEON HD3600 on ubuntu 12.04 64bit headless won't detect GPU, p

Hey there,

I am following this guide: http://rdmsnippets.com/2013/03/20/bitcoin-mining-with-ubuntu-12-04-tls-and-cgminer/

But it won't work on my server (Specification's are in the Subject-field)

I get this error:

Code:

koen@gorgabal-Server:~/bitcoinmining$ ./cgminer/cgminer -n
 [2013-06-23 15:03:51] CL Platform 0 vendor: Advanced Micro Devices, Inc.                    
 [2013-06-23 15:03:51] CL Platform 0 name: AMD Accelerated Parallel Processing                    
 [2013-06-23 15:03:51] CL Platform 0 version: OpenCL 1.2 AMD-APP (1113.2)                    
 [2013-06-23 15:03:51] Error -1: Getting Device IDs (num)                    
 [2013-06-23 15:03:51] clDevicesNum returned error, no GPUs usable                    
 [2013-06-23 15:03:51] 0 GPU devices max detected                    
koen@gorgabal-Server:~/bitcoinmining$ sudo aticonfig --lsa
* 0. 01:00.0 ATI Radeon HD 3600 Series

* - Default adapter

I can't switch to windows because of several reasons, does anybody have an idea of what I am doing wrong?

Thanks in advance!
ps: I have used linux for several years now, so I know my way around. This is a fresh server installation.