Question Force Radeon 5670 output signal to HDMI port


Junior Member
Jul 15, 2020
I used connecting the my PC's HDMI output to my TV as second display to watch those movies that I saved on my PC. However, recently that TV cannot be detected by my PC which used Radeon 5670 as its graphics card. After detail checking and test, I found it was my TV's HDCP chip has problem which cannot send the EDID information to Radeon. So I wonder if there is any way I can force Radeon to output signal to its HDMI port even it doesn't detect a connected display?

I found there is way to do this for nVidia card by changing the registry:
So I hope there is also have a similar way for AMD.