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371 posts

Ultimate Geek

#195322 15-Apr-2016 16:16
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Hi all


I have been bashing my head to trying to get the Display port to work properly with a active HDMI adapter from Dynamix on a LED TV.


I know the port works as I used a Display port to VGA adapter on a monitor with no issues and I know its not the adapter as it worked on the same monitor with the Display port to HDMI using another computer.


I have updated the drivers on the laptop. The graphics card/adapter is an Intel Graphics Media Accelerator QM67


When I look at the Intel Graphics properties icon recognises there is an external display plugged in but there is nothing showing on the screen (LED TV).  It did work momentarily but the output resolution was very low. When it was working, I plugged the laptop into the external monitor and got HD 720p resolution. But that was a one off, since then I have had no luck.


Does anyone have any other ideas? Am I right to think that maybe the laptop/on-board graphics card is not up to it for displaying via HDMI?


I have tried another Toshiba Tecra R850 with the same result.


Appreciate  your help.

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11542 posts

Uber Geek

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  #1533649 15-Apr-2016 17:22
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Was there a reason for using active? I have used passive mini-dp to HDMI no problems. I forget if I was using sound tho.

371 posts

Ultimate Geek

  #1533650 15-Apr-2016 17:34
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I went with an active adapter as the display port was not a DP++ type and according to the display port website it would not work with HDMI.


I did try a passive adapter and had no luck as well before trying the active adapter.


I got a feeling its a driver issue as I just had the screen working after removing the monitor device from the device manger at full resolution but now if I connect it back up its back to a very low resolution. When it was at full resolution, the Intel Device Manager saw it was a Samsung TV and when I connect it back up its just listed a generic monitor



11542 posts

Uber Geek

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  #1533680 15-Apr-2016 18:48
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Maybe try select monitor driver manually from the list.

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