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help with 3 monitors on AMD Radeon 7570

Question asked by rmswenson747 on Feb 2, 2019
Latest reply on Feb 15, 2019 by Thanny

Help… I am having trouble with the 3 monitor setup on an AMD Radeon 7570.  Some background… 3 MONITORS DO WORK under the following config… 

 

   7570 DP output ---> DP/VGA converter ---> DELL 1708FP monitor VGA

   7570 HDMI output -> HDMI/VGA converter -> ASUS-VS197 monitor VGA

   7570 DVI output --> DVI/VGA converter --> DELL 1708FP monitor VGA

 

The issue was that the Dell 1708FP displays were very muted/soft with bad contrast, and I wanted to try to use the DVI inputs that they have available.  (the ASUS monitor is VGA only).

 

So, I configured it this way, using amazon converter cables for the DP and HDMI outputs

AmazonBasics HL-007348 HDMI to DVI Output Adapter Cable - 10 Feet

AmazonBasics DisplayPort to DVI Cable - 10 Feet

 

The config looked like this…

 

   7570 DP output ---> DP/DVI cable ------> DELL 1708FP monitor DVI

   7570 HDMI output -> HDMI/DVI cable ----> DELL 1708FP monitor DVI

   7570 DVI output --> DVI/VGA converter -> ASUS-VS197 monitor VGA

 

I had the classic “only 2 monitors at a time” problem.  If I removed any monitor, the other 2 worked.  When all 3 were connected, only 2 worked.  I tried every possible config I could think of, using different converters and putting the ASUS VGA on different ports.  Couldn’t get rid of the 2 monitors only issue.

 

Research indicated I needed an ACTIVE DP to VGA converter, as opposed to a passive one.  So, I ordered this…

X-Lent DisplayPort to VGA Active Adapter DP to VGA Male to Female Converter

 

Reviews and comments on the Amazon site indicated that yes, this X-Lent adapter was indeed an active converter.  So, when it arrived, I configured this way…

 

   7570 DP output ---> ACTIVE DP/VGA converter -> ASUS-VS197 monitor VGA

   7570 HDMI output -> HDMI/DVI cable ----------> DELL 1708FP monitor DVI

   7570 DVI output --> DVI/DVI cable -----------> DELL 1708FP monitor DVI

 

Same issue, only 2 monitors at a time.  Any suggestions?  I don’t know what to do next…

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