Display Port Cable Issues

Quick chime in, I haven't read the entire thread but I do have 2 monitors connected via DP and use these http://www.amazon.com/gp/product/B005H3Q5E0/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1
I use the 6ft and 10ft without any issues. Some reviews scared me off the ones at Newegg.
I don't think you'll have any problems with them unless you get a defective one.

Also, I was having wakeup from sleep issues with 13.4s but I do not think it was the cables, I'm back on 12.10 and no issues at all regarding my DP monitors. So if its the cables, there's obviously a workaround that can be done in the driver so no excuses.
 
Hi Guys - sorry to resurrect this thread but it has become clear why I get the black screen problem now after leaving my PC powered on but idle.

I have 3 x monitors connected as -

1. DVI
2. HDMI-DVI
3. Mini-DP to DP

When I have the black screen issue if I disconnect and reconnect the displayport monitor it all comes back to life. So I then test my Mini-DP to DP cable and got voltage on pin-20. So then I ordered a couple of cables from Amazon to test and both of those also give voltage on pin-20. I'm now stuck as there does not appear to be many different DP cables available here in the UK and need some help finding a compliant cable.

Accell B119B-007J 6.6ft Mini Display Port to Display Port Cable


StarTech 3m DisplayPort Male to Male Cable with Latches
I used this together with the Mini-DP to DP adapter that came with my PowerColor 7950.



Unbranded 3m Mini DP - DP Cable (from ebay)
 
Hi I have the same problem I get Display failure message
I use His make Hd 6970
It has 2x Dvi and 2x mini dp and one shared Hdmi port
Im using active adapter between mini dp to Dvi to connect the Dell make monitor
After reading this thread I checked for voltage at pin 20 in graphic card with my active mini dp to Dvi adapter and monitor connected and powered .graphic card out of mobo.
But I did not get any power at pin 20 as mentioned here ...may be because my adapter is active and needs power from mobo to work .
What if I de solder pin 20 on the graphic card it self, meaning just de solder that pin so much that its not in contact with the board. Here is the pic bel
h610499d.jpg
ow showing the pin config on the board how it can be fixed


O
 
I use active adapter to connect min dp to Dvi to connect my monito which has dvi input there is no way I can chk the voltage at pin 20 as my adapter is active and needs power from mobo to function and as per testing procedure we need to do the test by disconnecting gpu from mobo.
Am not sure if active adapter actually back supplies 3.2v into the card when powered up.
I could not get 3.2 volts when chking as per the test method mentioned here as my gpu is out of the mobo and my active adapter is connected to gpu and thru Dvi fable to monitor.

Other question I have is does the Dvi cable also send return voltage 3.2 as other non standard cables. And are there any standard Dvicables
 
For several months, I had experienced the issue of monitor not waking up with the motherboard and monitor listed below, but I finally managed to solve the issue a few weeks back.

Motherboard: ASRock Fatal1ty Z77 Professional (DisplayPort)
Monitor: NEC MultiSync LCD1990SX (DVI)

Initially I used an active StarTech DP2DVIS adapter between motherboard's DisplayPort output and monitor's DVI input, but I would often see a black screen at boot time. A few weeks ago I saw the passive C2G 54131 adapter on sale and decided to give a try, and since then the monitor has woken up properly every single time.

For this specific issue that I had, the difference maker probably lies within the cable type (active vs. passive) and not the brand (StarTech vs. C2G). I imagine that the outcome would likely be the same had I purchased a passive adapter from StarTech instead of C2G. Unfortunately, this means that it won't necessarily help people who are having problems with their Eyefinity setups.
 
Old thread I know, but does AMD's 260,270.280,285.290-x includes some kind of "hardware protection" against "non-compliant" DP cables.
*"copied shamlessly from LordJuanlo".

I still have the issue on Win 8.1 but down to Win 7 levels with my 7970's.

I'd ask about the upcoming 3xx series but don't really expect an answer on unreleased hardware ;)
 
DarkFoss said:
Old thread I know, but does AMD's 260,270.280,285.290-x includes some kind of "hardware protection" against "non-compliant" DP cables.
*"copied shamlessly from LordJuanlo".

I still have the issue on Win 8.1 but down to Win 7 levels with my 7970's.

I'd ask about the upcoming 3xx series but don't really expect an answer on unreleased hardware ;)
Click to expand...

Interesting....thanks for the info. If I upgrade my monitor and will use DP port. I would definitely looking for certificated DP cable.
 
DarkFoss said:
Old thread I know, but does AMD's 260,270.280,285.290-x includes some kind of "hardware protection" against "non-compliant" DP cables.
*"copied shamlessly from LordJuanlo".

I still have the issue on Win 8.1 but down to Win 7 levels with my 7970's.

I'd ask about the upcoming 3xx series but don't really expect an answer on unreleased hardware ;)
Click to expand...

Since this issue came to light there are a lot more certified cables available.

Also, the R9 290X I have has only 1 DP connector on it compared to my Asus 7970 which has 4. I currently have one display connected via DP (with an Accell cable) and it has never missed a beat however the 7970 did still (very rarely) drop to 640x480 (like once in 6 months or so).

Not sure if any of that info helps.
 
Treeckcold57 said:
Interesting....thanks for the info. If I upgrade my monitor and will use DP port. I would definitely looking for certificated DP cable.
Click to expand...
The new cables do help. I bought the Accell 1.2 certified mini displayport to displayport cable so I didn't have to worry about the adapter being part of the problem.

Deimos said:
Since this issue came to light there are a lot more certified cables available.

Also, the R9 290X I have has only 1 DP connector on it compared to my Asus 7970 which has 4. I currently have one display connected via DP (with an Accell cable) and it has never missed a beat however the 7970 did still (very rarely) drop to 640x480 (like once in 6 months or so).

Not sure if any of that info helps.
Click to expand...

I've never had the resolution drop, my issue is the daily black screen out of range error where I either cycle through the connections or turn the monitor off and back on to regain the signal.
Good to hear the 290x works fine, are you on Win 7 or 8.1?

I'm hoping the upcoming 300 series will. :) I'll ask here once they are released.
 
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