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…
