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"Unsupported signal, please adjust your PC output" with HDMI cable

molotonche Posted messages 36 Status Member -  
Anth0x Posted messages 2820 Registration date   Status Member Last intervention   -
Hello everyone

I will explain my problem:

When I connect my TV, a Sony KDL-42W706B, to my PC via an HDMI cable, I get the error message "Unsupported signal, please adjust your PC output" when I select the HDMI channel.
I see my desktop image occupying 2/3 of the TV screen, the sound also works but there is still this error message.

I checked the Screen Resolution on my PC, I'm set to 1366x768, and when I switch to 1280x720 the TV screen is used at 100% but obviously the image quality is poor and it's not HD when I start a movie...

Does anyone have any idea what I could try to do, please?
Thanks in advance and have a good evening!

1 answer

  1.
    Anth0x Posted messages 2820 Registration date   Status Member Last intervention   994
     
    Hi,

    You need to check the TV's aspect ratio (16:9, 16:10, etc.) as well as find the TV's native resolution, then set the same resolution on your PC. If that resolution doesn't exist, you need to force the display of a resolution not supported by your graphics card.
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    1. molotonche Posted messages 36 Status Member
       
      Hi and thanks for your response,

      so the TV ratio is 16/9 and the resolution is 1920x1080.
      I tried to force the display to a higher resolution, but it's impossible to find "Display1_DownScalingSupported" on my PC... but anyway, I've come to understand after my research that it would be impossible to go up to 1920x1080.

      So I really don't know what to do, knowing that I have already connected an HDMI cable from my laptop to another 1080p TV and it worked normally.
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    2. molotonche Posted messages 36 Status Member
       
      Well, in the end, I managed to get the good resolution to the TV.

      However, when I play a movie with VLC to test it, the quality seems to be worse than when I play the same movie via a USB stick connected to the TV.

      Is that possible or am I imagining things?

      Thanks again.
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    3. Anth0x Posted messages 2820 Registration date   Status Member Last intervention   994
       
      Are you sure the TV is in 1080p and not 1080i?

      Check the screen settings, maybe try an automatic HDMI adjustment to see if that fixes the problem, because if it doesn't happen on your other TV, then it's definitely the TV that's having an issue.
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