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  • Posts: 6
  • Registered: ‎12-13-2018
  • Location: ES
  • Views: 218
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Thinkpad t480 Display port to HDMI not working.

2019-12-16, 12:14 PM

Greetings. I have a T480 connected to a Pro docking station (the one with the side connectors). I am triying to connect it to an HDM TV via a DP 1.4 to HDMI 2.0 active adapter. Windows detects a connected screen, and the TV detects input in that channel, but there is no image nor audio.

Things I have tried already:

- Updated thunderbolt firmware and drivers, and everything available from Lenovo.

- Tried both intel graphics drivers from their website and the Lenovo OEM ones.

- Tried a Variety of refresh rates and resolutions.

- Trying the adapter In a x220 displayport: it works without problems, so the problem isn't the cable.

- Testing a different, passive adapter: It works with the T480.

- Numerous reboots, disconnecting the dock and everything from it, and connecting one device at a time.

- Tried both displayports with each of the 4 HDMI inputs of the TV.

- Thunderbolt assist mode in bios disabled.


And that's all I remember from the top of my head. Any idea as to why is this happening?

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