I found this topic:
https://bitcointalk.org/index.php?topic=71366.40It appears someone is doing it. I don't have a dedicated mining rig, just using my desktop. I figure I might as well use everything I have rather than let it sit idle (computer is running anyway).
I just updated the driver for the Intel HD 4000. Running cgminer -n, I get the output below. It's apparently getting an error trying to get the device ID of the intel GPU. Any ideas on how to get it working?
[2013-04-22 06:02:05] CL Platform 0 vendor: Intel(R) Corporation
[2013-04-22 06:02:05] CL Platform 0 name: Intel(R) OpenCL
[2013-04-22 06:02:05] CL Platform 0 version: OpenCL 1.2
[2013-04-22 06:02:05] Error -1: Getting Device IDs (num)
[2013-04-22 06:02:05] CL Platform 1 vendor: NVIDIA Corporation
[2013-04-22 06:02:05] CL Platform 1 name: NVIDIA CUDA
[2013-04-22 06:02:05] CL Platform 1 version: OpenCL 1.1 CUDA 4.2.1
[2013-04-22 06:02:05] Platform 1 devices: 1
[2013-04-22 06:02:05] 0 GeForce GTX 670
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] Failed to ADL_Adapter_ID_Get. Error -1
[2013-04-22 06:02:05] ADL found less devices than opencl!
[2013-04-22 06:02:05] There is possibly more than one display attached to a GPU
[2013-04-22 06:02:05] Use the gpu map feature to reliably map OpenCL to ADL
[2013-04-22 06:02:05] WARNING: Number of OpenCL and ADL devices did not match!
[2013-04-22 06:02:05] Hardware monitoring may NOT match up with devices!
[2013-04-22 06:02:05] 1 GPU devices max detected
[2013-04-22 06:02:05] USB all: found 6 devices - listing known devices
[2013-04-22 06:02:05] No known USB devices