I happen to have two Lenovo Thinkpad T510s, one with NVIDIA and the other with Intel HD Graphics video controller (both running on Windows 7 x64). I have bought a Displayport to HDMI cable and tested it with both notebooks with a Samsung TV. Video was ok, but audio did not work with the notebook with Intel HD Graphics (i.e. the NVIDIA one had no troubles at all, which implies that the cable is perfect !)
Here are all my failed attempts:
- updated the Intel HD graphics drivers to the latest available on the Intel website
- updated the sound driver to the latest available on the lenovo website
- tried out to see if there is an option to set the playback device to the TV both with windows sound options in the control panel and Smart Audio
You mentioned that you downloaded our drivers for GFX, and the Lenovo drivers for Audio. You should try using the GFX drivers Lenovo provides for your model, as ours are generic and may not have the same features enabled as the ones from your OEM. I located the latest video driver on your OEM site; give it a try and let me know if your audio issue is resolved or not.
Yep. Earlier I tested it with the latest version available here:
The other notebook lists the TV as connected ... as a reminder, the other one uses an Nvidia graphics controller. I currently haven't got access to my other notebook (since it is my work's notebook till Monday). But as far as I can remember, I checked that, and the TV is listed under sound devices as well.
I have already done that. It is clearly a software issue, because as I mentioned I have tried it under Ubuntu, and it works perfectly ! I have also contacted Lenovo, they seem to know nothing about that problem They are offering only the basic support over the phone. Today I called them and they told me to contact Intel about that OR Conexant (since the audio card is a Conexant product) .