oclHashcat GPU problem

Hi

I've installed ATI drivers using this tutorial: http://www.blackmoreops.com/2014/03/05/i...nux-1-0-6/ . When I try oclhashcat command i get ERROR: invalid gpu_id 0 specified. oclHashcat -b gives WARN: ADL_Overdrive6_FanSpeed_Get(): -1
Device #1: Caicos, 512MB, 750Mhz, 2MCU
ATTENTION! Unsupported or incorrect installed GPU driver detected!
You are STRONGLY encouraged to use the official supported GPU driver for good reasons.

fglrxinfo command gives:
display: :0  screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7400M Series
OpenGL version string: 4.4.12874 Compatibility Profile Context 14.10.1006.1001

Please, help me, sorry for my poor English...