This walkaroud (http://ubuntuforums.org/showthread.php?t=1930450) wroks properly on dell vostro 3350 with radeon hd6470m but only on 64-bit system (i've tested it on ubuntu 12.04 dvd edition 64 bits with updates). It won't work on Ubuntu desktop 32 bit (tested). Catalyst Control Center recognizes discrete graphics properly (radeon 6400 series) but there are two or three issues:
1. You can't switch to the integrated graphich via catalyst control center - it'll only hang you system, you have to do it via command line:
Code:aticonfig --pxl # List current activated GPU sudo aticonfig --px-dgpu # Activate discrete GPU (High-Performance mode), must re-start X to take effect sudo aticonfig --px-igpu # Activate integrated GPU (Power-Saving mode), must re-start X to take effect
It switches gpu but i'm getting error with it:
2. Open gl performance on dgpu is only 10% better than on igpu... (results from glmark2)Code:PowerXpress info: Diagnostic output from /usr/lib64/fglrx/switchlibglx: update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl32.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl32.icd (of link group x86_64-linux-gnu_gl_conf) doesn't exist.
3. On igpu you cant run some 3d benchmarks like Unigine heaven - they just hang up