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D13H4RD

Monitor blacking out for 2 seconds at times on DP 1.2

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Posted · Original PosterOP
4 minutes ago, Taf the Ghost said:

It should be the lower HDMI spec, I guess. HDMI 1.2 will only allow for 1080p/120hz. 1.3 and higher is fine. Save a few cents?

Probably. The other one is likely HDMI 1.4


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Posted · Original PosterOP

So yeah, I did the test. 

 

The phone definitely played a role in the brief blackout but otherwise didn't really make it more or less prevalent. 

 

It's also more intermittent than before, especially when FreeSync is enabled on the monitor's OSD setting (even though it would do nothing as of now as it's paired with an NVIDIA GPU and the update isn't out yet). It still does it but it's a bit more random than before. 

 

As for the cable itself? There's no manufacturer listed on the packaging, and even the packaging itself has taken some........liberties from the older style packaging that Apple had used for their dongles before they switched. 


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Posted · Original PosterOP
13 minutes ago, Peskanova said:

Some color options on the monitor or the cable, I bet for the first.

It's set to 8-bit (the default setting) and on sRGB


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Samsung Galaxy Note8 SM-N950F

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Posted · Original PosterOP
2 minutes ago, Peskanova said:

A friend had same problem but with amd card (rx 570) may be its something like a power option on energy plan or just drivers.

I'm suspecting those initially but I don't think that explains why the problem disappears completely on DP 1.1


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Intel Core i7 7700HQ | GeForce GTX 1060 6GB | 16GB DDR4-2133 | 128GB SanDisk M.2 SATA SSD + 1TB 7200RPM Hitachi HDD | 15.6" 1080p IPS monitor @ 60Hz w/ G-SYNC | Windows 10 64-bit

 

Samsung Galaxy Note8 SM-N950F

Exynos 8895 (4x Mongoose @ 2.3GHz, 4x Cortex A53 @ 1.7GHz)ARM Mali G71 MP20 | 6GB LPDDR4 | 64GB Samsung NAND flash w/ UFS 2.1 dual-lane controller + 128GB SanDisk C10 UHS-I microSD | 6.3" 1440p "Infinity Display" AMOLED | Android Nougat 7.1.1 w/ Samsung Experience 8.5

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10 hours ago, D13H4RD said:

I'm nowhere near my monitor now, but I might see if I can find a good MDP-DP cable even though they're hard to find. 

I have had the same problem as you pretty much.

The AMD Radeon HD 7990 has only Mini DP outputs. It is capable of running 4K 60hz with DP 1.2 but I can't find a cable that is decent enough quality to do it without spending a lot of money.

I have bought a few cables but they are always have a thinner gauge wire compared to the DP 1.2 that came with my monitor. And then I get the screen blacking out issue.

 

From what I can tell if a cable if VESA certified then it is certified and tested to work properly and anything else (90% of cables on amazon) is hit or miss depending on how much the manufacturer has cheaped out.

Quote

Recently VESA has experienced quite a few complaints regarding troublesome DisplayPort operation that ended up being caused by improperly made DisplayPort cables.  These “bad” DisplayPort cables are generally limited to non-DisplayPort certified cables, or off-brand cables.

Annoyingly now that Mini DP is getting less common (not used on any desktop GPUs for years) it seems to be pretty much cheapo cables and nothing good.

Read this page by VESA to learn more about the cheapo cables. They have a certified list but it has only one MDP to DP cable, still that is the cable I will buy once it is stocked in my country but it looks to be available in the USA.

Also startech are usually pretty good for quality and have a number of VESA certified cables. Not all are certified but it at least shows they can produce high quality cables. This cable should do the job it does actually state it can do 4k @ 60 hz which has similar bandwidth requirements to 144hz 1080p. Notice how the cheapo cable say they do 4k but nowhere state 60hz, I think its because the best the cable can do is 30hz 4K over DP 1.1.

Edited by Madgemade
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Posted · Original PosterOP
1 hour ago, Madgemade said:

snip

The cable I was looking at (the UGREEN cable I linked to earlier) does say "4K 60Hz" on its product page and it seems that users find that it works okay on their 4K60 displays.

 

I'll link to it below but VESA has said nothing about it, so I have no idea how reliable it might actually be.

 

https://www.amazon.com/UGREEN-Thunderbolt-Compatible-Displayport-Adapter/dp/B00V053D4O?tag=linus21-20


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Samsung Galaxy Note8 SM-N950F

Exynos 8895 (4x Mongoose @ 2.3GHz, 4x Cortex A53 @ 1.7GHz)ARM Mali G71 MP20 | 6GB LPDDR4 | 64GB Samsung NAND flash w/ UFS 2.1 dual-lane controller + 128GB SanDisk C10 UHS-I microSD | 6.3" 1440p "Infinity Display" AMOLED | Android Nougat 7.1.1 w/ Samsung Experience 8.5

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Posted · Original PosterOP

Thought I'd update on some progress. 

 

Went out and got another DP cable. This one has a manufacturer and claims to be compatible with DP 1.2, so we're already off to a good start. 

 

Using the cable, it also allowed me to fully control my monitor through the OSD, so that's even better news. Better yet, it seems to be significantly more stable, and any adjustment takes far less time to perform. 

 

Only one issue though. The NVIDIA Control Panel seems to recognize this as a 60Hz monitor despite the OSD being set at 144Hz. The cable claims to be DP 1.2 compatible, so 1080p144 shouldn't be an issue for it at all in theory, especially since my old cheapskate one could do it (until it breaks down) 


Please tag me if you need assistance or if you want me to contribute to a topic 

 

ASUS RoG STRIX GL502VM

Intel Core i7 7700HQ | GeForce GTX 1060 6GB | 16GB DDR4-2133 | 128GB SanDisk M.2 SATA SSD + 1TB 7200RPM Hitachi HDD | 15.6" 1080p IPS monitor @ 60Hz w/ G-SYNC | Windows 10 64-bit

 

Samsung Galaxy Note8 SM-N950F

Exynos 8895 (4x Mongoose @ 2.3GHz, 4x Cortex A53 @ 1.7GHz)ARM Mali G71 MP20 | 6GB LPDDR4 | 64GB Samsung NAND flash w/ UFS 2.1 dual-lane controller + 128GB SanDisk C10 UHS-I microSD | 6.3" 1440p "Infinity Display" AMOLED | Android Nougat 7.1.1 w/ Samsung Experience 8.5

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