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2nd U2415 not recognized - new refurb 8700 & GTX 745
Dell XPS 8700 with GTX 745 video card and dual U2415 monitors.
Second monitor says that is not getting a signal nor is it recognized by nvidia display software.
Setup = XPS 8700 GTX 745 HDMI out (there is no DP out) to monitor #1 HDMI in; monitor #1 DP out to monitor #2 DPmini in.
Monitor #2 OSD (On Screen Display) input Source set to Mini DisplayPort.
Monitor says no signal so the connection seems to be there. (If there is no connection it says no cable of the type specified in the OSD config.)
System rebooted. No change.
Do I need to connect the monitor for DP Multi-Stream Transport (MST) function? Both or just the second monitor? EDIT: I tried both and it did not work and I don't find search results looking for gtx 745 dp1.2
Tips appreciated.
brookefox
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May 31st, 2015 12:00
How to delete a post?
brookefox
118 Posts
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May 31st, 2015 13:00
Since the available GTX 745 out ports are: Dual Link DVI-D, HDMI, VGA
and the U2415 in ports are HDMI, DP and DPmini
perhaps what I need is either
adapter: Dual Link DVI-D to HDMI or
adapter: Dual Link DVI-D to DP or
adapter: Dual Link DVI-D to DP mini
How can I daisy-chain the monitors with this card?
DELL-Chris M
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May 31st, 2015 17:00
How can I daisy-chain the monitors with this card?
* You cannot. The video card must have DP out or mDP out to go to #1 monitor DP in or mDP in. Then the #1 DP out port could be used. The DP out on #1 monitor cannot work because you are connecting to #1 monitor HDMI in.
None of your video card ports can connect to DP or mDP via a straight cable. You would need an expensive active converter.
Because your video card does not have DP out or mDP out, you must setup in this way =
GTX 745 HDMI out --> HDMI to HDMI cable --> #1 U2415 HDMI in
GTX 745 DVI-D out --> DVI to HDMI cable --> #2 U2415 HDMI in
Or, remove that video card and replace it with one that has DP out or mDP out.
FPDH3 Nvidia GeForce GTX660
9KYFK AMD Radeon R9 270
WNMHJ AMD Radeon HD887
brookefox
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June 1st, 2015 12:00
Thank you much, Chris. I had managed to find a DVI-D single link to HDMI adapter for the second monitor. Things seem A-OK for the moment, though I see that adapter is more limited than a dual link version (1920 x 1080, 4.59 Gbps, vs. 2048 x 1536, 9.9 Gbps). I ordered a DVI-D dual link to HDMI cable before I found the single link adapter. This would be superior?
DELL-Chris M
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June 1st, 2015 13:00
Confused. The U2415 can only do 1920x1200 on all of its ports (HDMI, HDMI, DP, mDP). Where are you getting 2048x1536? Perhaps the other cable will get you to 1920x1200.
brookefox
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June 1st, 2015 15:00
What about DGTX 745 DVI-D out --> DVI to DP or DP mini cable --> #2 U2415 DP or DP mini in?
brookefox
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June 1st, 2015 15:00
The 2048x1536 is from a spec on the max possible for various DVI.
Nvidia control panel is showing 1920x1200 (native) for both monitors now, contrary to what I read and said above, that the DVI-D single would be limited to 1920x1080.
(Lots of probs with loading the forum today... and 'javascript:void(0);' no matter the browser or machine.)
Thank you.
DELL-Chris M
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June 1st, 2015 19:00
Video card DVI cannot upconvert to monitor DP/mDP via a straight cable. Read this.
brookefox
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June 4th, 2015 15:00
The forum will not advise you that you can't post without being logged in or that you are not logged in, it will simply ignore your post requests, leaving you to try to figure out the 'javascript:void(0);' . After several days I figured it out.
Most tedious.
brookefox
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June 4th, 2015 15:00
Thank you, Chris. With the adaptive cables, I was not trying to 'upconvert' but rather to 'convert' or 'pass through.'
brookefox
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June 4th, 2015 16:00
Since my first post of this reply is being 'moderated' for quite awhile (though I got an email copy with an invalid link), I'll repost rather than wait to see. Of course that will likely just happen again....
Thank you, Chris. With the adaptive cables, I was not trying to 'upconvert' but rather to' convert' or 'pass through.'
DELL-Chris M
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Community Manager
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54.3K Posts
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June 4th, 2015 17:00
The forum will not advise you that you can't post without being logged in or that you are not logged in, it will simply ignore your post requests, leaving you to try to figure out the 'javascript:void(0);' . After several days I figured it out.
* I always look for my name at the top to know if I am logged in or not.
Since my first post of this reply is being 'moderated' for quite awhile (though I got an email copy with an invalid link), I'll repost rather than wait to see. Of course that will likely just happen again. Thank you, Chris. With the adaptive cables, I was not trying to 'upconvert' but rather to' convert' or 'pass through.'.
* Same thing. A video card DVI cannot convert or pass through to monitor DP or mDP. I still think you would be better suited by replacing that video card with one that has DP out or mDP out.