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November 29th, 2015 07:00
U2415, Dual, Daisy Chaining and Display Port Cable
Hi
I just got 2 U2415 monitors - which I'm trying to connect by daisy chaining them. I had bought a Display Port cable because I need it a bit longer (3 meter). When I use this cable the first monitor keeps turning on an off. I when tried to switch to the shorter cable which was in the box with the monitor - and that just worked?
Do I need a special cable when Daisy Chaining? The one I had bought was: http://www.clicktronic.com/en/products/displayport/
The shorter cable is connect to the mini display port in the monitor - where the longer was connect to the Display Port - can that make a difference?
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DELL-Chris M
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November 29th, 2015 13:00
Dell only tested our 6 foot cables. We have no idea if a 9 foot cable will work. I am confused as to how you are setting this up. Does the computer have DP out or mDP out?
psnabe
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November 29th, 2015 21:00
The computer only has a DP port. The first monitor has DP 1.2 enabled and the second has it disabled (Intel HD 4600)
DELL-Chris M
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November 30th, 2015 07:00
Since this works, the monitors are fine. The issue is the untested longer cable.
Computer DP out --> Dell U2415 DP to mDP cable --> #1 U2415 mDP in (DP 1.2 Enabled)
#1 U2415 DP out --> Dell U2415 DP to mDP cable --> #2 U2415 mDP in (DP 1.2 Disabled)
psnabe
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December 3rd, 2015 21:00
I bought a new 3 meter DP --> mDP cable which claimed to support Extended Desktop - and it works :-)