I wanted to do some mining with my IdeaPad Y580 which has a NVIDIA GeForce GTX660M and Intel HD 4000 integrated graphics, switched using Optimus. Laptop is running under Ubuntu 13.04.
The problem is i can't launch a miner (i tried cgminer and poclbm) on the laptop. I usually get the error like 'Nothing to mine on, exiting', or something similar.
The question is, how can I configure the miner/OpenCL to get this working.
Also I know that NVIDIAs/laptop graphics are ineffective in BTC mining, I just wanted to see how many Mhashes does my card get.