And how can I see the temperature of the card?
I encountered the same problem, I'm running on Win7 and have two displays connected to NVIDIA card and no display to AMD. Seems that Win7 assumes there is no need to have signal output through AMD card and somehow causes the AMD APP not returning info of fan speed/temp.
Here's my workaround:
- Go to Control Panel -> Display -> Screen Resolution
- Hit "Detect" button -> you will see a ghost display showed up (not connected)
- Click on the ghost display -> under "Multiple displays" drop down, select "Try to connect anyway on : VGA" -> apply settings
- Again, under "Multiple displays" drop down, select Extend these displays -> apply settings
- Now you have a hidden desktop on the ghost display
- Run cgminer normally, you should get your stats readings
Hope that helps!