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Does a GTX 670 not support 1440p@144hz or HDCP over Displayport? - Page 3

post #21 of 31
Displayport cables are not the same as speaker cables, I was reading about them and it is quite frequent that monitors ship with crap DP cables. Some do not pass VESA certification tests. I was reading with a bad cable you can get a link failed eg, failed HDCP, you can get locked to a lower refresh rate, amongst other issues. Both of which you have!

I am in the process of looking for a new cable for my S2716dg, although not experiencing any of these issues!
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post #22 of 31
Thread Starter 
Quote:
Originally Posted by invena View Post

Displayport cables are not the same as speaker cables, I was reading about them and it is quite frequent that monitors ship with crap DP cables. Some do not pass VESA certification tests. I was reading with a bad cable you can get a link failed eg, failed HDCP, you can get locked to a lower refresh rate, amongst other issues. Both of which you have!

I am in the process of looking for a new cable for my S2716dg, although not experiencing any of these issues!

That's what I've been seeing as well, which is so strange because unless I'm mistaken Displayport is digital just like HDMI so it's a bunch of 1's and 0's. Hence why I'm a little confused as to why the cable would matter unless of course it was physically damaged somehow or (as it turns out) the pins are misconfigured. Which I suppose in that case shame on Dell for not checking the cables they are including with the monitor.

Ahh, so you also have the S2716DG? Isn't it an awesome monitor? I've only used it for maybe 10-15 minutes after loading the calibration and ICC profile and am blown away by how good it looks. Can't wait to test it out this weekend in games. Not sure if you decided or not, but I went ahead and bought this one as speedyeggtart recommended due to the VESA issue - https://www.amazon.com/Accell-B142C-007B-UltraAV-DisplayPort-Locking/dp/B0098HVZBE/
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post #23 of 31
Quote:
Originally Posted by Warrior1986 View Post

That's what I've been seeing as well, which is so strange because unless I'm mistaken Displayport is digital just like HDMI so it's a bunch of 1's and 0's. Hence why I'm a little confused as to why the cable would matter unless of course it was physically damaged somehow or (as it turns out) the pins are misconfigured. Which I suppose in that case shame on Dell for not checking the cables they are including with the monitor.

Ahh, so you also have the S2716DG? Isn't it an awesome monitor? I've only used it for maybe 10-15 minutes after loading the calibration and ICC profile and am blown away by how good it looks. Can't wait to test it out this weekend in games. Not sure if you decided or not, but I went ahead and bought this one as speedyeggtart recommended due to the VESA issue - https://www.amazon.com/Accell-B142C-007B-UltraAV-DisplayPort-Locking/dp/B0098HVZBE/

Some time people get bad cables with the monitor. I had a friend that bought a 30" 2560x1600 monitor that came with a Dual Link DVI cable that didn't transmit the full resolution even though it had all the correct pins - after he contacted the company, they found out a shipment of monitors had gotten non-compliant Dual Link DVI cables so they replaced my friends cable and also replaced all the cables in that shipment. They thanked my friend since they were able to catch it early and it did not affect many customers.

So it happens - just it sucks when it happens because it makes you think some thing like your PC or GPU is not working correctly.

The thing is as monitor resolutions and refresh rates get higher - the quality, the length of the cable and compliance may come into play due to bandwidth needs. Most if not all cables may work fine with 1080p monitors or even 2560x1080 or 2560x1440 monitors. But once you start getting into 4k or high refresh rate monitors those cables crap out. For example a 1920x1080 144Hz monitor requires more bandwidth than a 2560x1440 60hz monitor.
Edited by speedyeggtart - 6/18/16 at 9:26am
post #24 of 31
Thread Starter 
UPDATE

I purchased this cable per the suggestions to replace the cable that came with the monitor. So I got this one that speedyeggtart linked to.


Result? Absolutely no change. Still don't have 144hz selectable and Nvidia control panel still says the display does not support HDCP.

I guess this means I have to RMA the monitor?
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post #25 of 31
Quote:
Originally Posted by Warrior1986 View Post

UPDATE

I purchased this cable per the suggestions to replace the cable that came with the monitor. So I got this one that speedyeggtart linked to.


Result? Absolutely no change. Still don't have 144hz selectable and Nvidia control panel still says the display does not support HDCP.

I guess this means I have to RMA the monitor?

Wow! Must be the monitor! That's the only component left!
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post #26 of 31
Thread Starter 
Quote:
Originally Posted by invena View Post

Wow! Must be the monitor! That's the only component left!

I'm about to find out as I'm going over to my brother's place and he has a GTX 970 in his rig, so I'll soon confirm the 144hz issue and whether or not the HDCP issue is due to the monitor being defective.
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post #27 of 31
Thread Starter 
UPDATE

So last night I tested the monitor on my brother's machine which has a GTX 970 in it. I tested both the original cable and the replacement cable, and we tried all 3 of the Displayports available on the card.

Result? 144hz was working, which I was 100% expecting given the limitation of the GTX 670 and the pixel clock issue. However, Nvidia control panel would show on every single combination that the display does NOT support HDCP. We plugged his monitor back in just on a whim, and sure enough HDCP was showing as functioning.

Therefore, I am forced to make the conclusion that I have a defective monitor. Thankfully, Newegg is awesome and they are taking the monitor back even though I'm past the return period. So I ordered a new one and will return this one, and hopefully the replacement will work.

I'm also hoping that the replacement has a much more recent manufacture date because I get the feeling that it could have been a batch issue in the October 2015 run as two other people who bought monitors from Newegg that have that production stamp also have the same issue as me. I'm willing to bet that between then and now there was an internal hardware revision or BIOS update. In any event, I'm crossing my fingers as I absolutely LOVE this monitor otherwise but I do need HDCP working unfortunately.
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post #28 of 31
Quote:
Originally Posted by Warrior1986 View Post

UPDATE

So last night I tested the monitor on my brother's machine which has a GTX 970 in it. I tested both the original cable and the replacement cable, and we tried all 3 of the Displayports available on the card.

Result? 144hz was working, which I was 100% expecting given the limitation of the GTX 670 and the pixel clock issue. However, Nvidia control panel would show on every single combination that the display does NOT support HDCP. We plugged his monitor back in just on a whim, and sure enough HDCP was showing as functioning.

Therefore, I am forced to make the conclusion that I have a defective monitor. Thankfully, Newegg is awesome and they are taking the monitor back even though I'm past the return period. So I ordered a new one and will return this one, and hopefully the replacement will work.

I'm also hoping that the replacement has a much more recent manufacture date because I get the feeling that it could have been a batch issue in the October 2015 run as two other people who bought monitors from Newegg that have that production stamp also have the same issue as me. I'm willing to bet that between then and now there was an internal hardware revision or BIOS update. In any event, I'm crossing my fingers as I absolutely LOVE this monitor otherwise but I do need HDCP working unfortunately.

Thanks for the update - learn something new all the time.
post #29 of 31
Thread Starter 
UPDATE

Bad news. Got the replacement monitor in and it has the EXACT same October 2015 manufacture date stamp on it along with the same revision number on it. I'm not even going to bother opening it up, just going to call Newegg and tell them I want to RMA the monitor and to send me a monitor that has a date stamp on it within the past few months. It's way too much of a coincidence that we are at the end of June almost and Newegg just got a new shipment of these monitors 2-3 weeks per the rep and yet I'm getting a monitor from the same batch from 9 months back even after ordering a replacement over a month later.
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post #30 of 31
Quote:
Originally Posted by Warrior1986 View Post

UPDATE

Bad news. Got the replacement monitor in and it has the EXACT same October 2015 manufacture date stamp on it along with the same revision number on it. I'm not even going to bother opening it up, just going to call Newegg and tell them I want to RMA the monitor and to send me a monitor that has a date stamp on it within the past few months. It's way too much of a coincidence that we are at the end of June almost and Newegg just got a new shipment of these monitors 2-3 weeks per the rep and yet I'm getting a monitor from the same batch from 9 months back even after ordering a replacement over a month later.

Even if they got a new shipment of monitors, they are going to sell off the last of the old shipment first. It sounds like you RMA'd for a refund and rebought the monitor, so not surprising you got the same old batch. Hopefully they are willing to pull one of the newer ones off for you.
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