AnsweredAssumed Answered

DisplayPort Downspread

Question asked by kknd on Nov 19, 2015
Latest reply on Nov 24, 2015 by kknd

Hello guys,


I'm developing the DisplayPort receiver product now.

And i use NVIDIA & AMD graphic cards for the compatibility test of my product.


Because my product do not support the DP Downspread, i turn off the DP Downspread of graphic cards.
According to my test result, my product works fine with NVIDIA card but do not work with AMD card. (I use a Radeon R9 270.)

I have some questions as below.

1. Do AMD Graphic cards always activate the DP Downspread?

2. Is there a control function of the DP Downspread in the AMD Driver?

3. Is it correct that AMD card generate the DP Signal by the DPCD Information?