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screen flickering issues

frozensun
By frozensun
in Graphics Cards
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Posted
9 minutes ago, frozensun said:

Monitor doesn't support free sync nor gsync..model is Samsung CJG50 32 inch..

download the manual here http://downloadcenter.samsung.com/content/UM/202002/20200213102844648/BN46-01311A-Eng.pdf

 

And check the setting for the powersaving mode and display port version 

 

Also what's your graphics card? does it support DP 1.2 ? Did the DP cable you use come with the monitor or did you buy it separately? if you bought it separately s it rated for DP 1.2

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Just now, papajo said:

download the manual here http://downloadcenter.samsung.com/content/UM/202002/20200213102844648/BN46-01311A-Eng.pdf

 

And check the setting for the powersaving mode and display port version 

 

Also what's your graphics card? does it support DP 1.2 ? Did the DP cable you use come with the monitor or did you buy it separately? if you bought it separately s it rated for DP 1.2

Both cards are DP 1.2 rated.

R7 370 from Sapphire and R9 390 Strix.

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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1 minute ago, frozensun said:

Both cards are DP 1.2 rated.

R7 370 from Sapphire and R9 390 Strix.

Ok do the thingy stated in the manual I provided then.

 

But wait a moment you said you have a GTX 1660 and a AMD graphics card now you are saying you have two AMD graphics cards? Is one a spare or you have both those graphics cards (r7 and r9) pluged in your PC? 

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Just now, papajo said:

Also did the cable come with the monitor or you purchase it separately ?

Dude cable didn't come with monitor I purchased the DP 1.2 cable...same cable works okay with 1660 Ti.

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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36 minutes ago, frozensun said:

Dude cable didn't come with monitor I purchased the DP 1.2 cable...same cable works okay with 1660 Ti.

Well I dont see any reason for being rude, I mean I can understand your frustration with the issue but if you consider it a hassle to respond to questions about your own problem imagine how it would be for caring about a problem that's not even yours which is what I do and its not like I want to do it in the sense that I get something from it I am just trying to help out this is not a straight up problem which means unfortunately for us that there is no magic answer for it and thus especially since I dont have the equipment at hand cant guess anything so I have to ask in order to eliminate potential failure points..  Your issue is a war of attrition, we have to check everything out otherwise if you think that's a hassle you can be left to your own devices and try resolve it your own. 

 

Even doctors with years of education and experience dont evaluate a patient or a problem from afar via posts exactly because such things are too complicated and many things need to be taken into consideration. 

 

We (I mean people in this forum) are not risking anybody's life here so we have the luxury of being able to try to eliminate scenarios from a distance.

 

 

 

Having said all that it still could be the cable it may not be garbage but still may not be as good as it should because it worked on one card doesnt mean anything maybe that card has a stronger signal output, slightly stronger but all it takes is a slight difference that could lead to those millisecond flickers you witness. 

 

try with the cable provided with your monitor (which is probably an HDMI one) does the issue still exist? 

 

Also have you tried the powersaving settings (its on page 40 and change the setting to DP 1.2) ? did it work? (<-- try this first and then the cable) 

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3 hours ago, papajo said:

Well I dont see any reason for being rude, I mean I can understand your frustration with the issue but if you consider it a hassle to respond to questions about your own problem imagine how it would be for caring about a problem that's not even yours which is what I do and its not like I want to do it in the sense that I get something from it I am just trying to help out this is not a straight up problem which means unfortunately for us that there is no magic answer for it and thus especially since I dont have the equipment at hand cant guess anything so I have to ask in order to eliminate potential failure points..  Your issue is a war of attrition, we have to check everything out otherwise if you think that's a hassle you can be left to your own devices and try resolve it your own. 

 

Even doctors with years of education and experience dont evaluate a patient or a problem from afar via posts exactly because such things are too complicated and many things need to be taken into consideration. 

 

We (I mean people in this forum) are not risking anybody's life here so we have the luxury of being able to try to eliminate scenarios from a distance.

 

 

 

Having said all that it still could be the cable it may not be garbage but still may not be as good as it should because it worked on one card doesnt mean anything maybe that card has a stronger signal output, slightly stronger but all it takes is a slight difference that could lead to those millisecond flickers you witness. 

 

try with the cable provided with your monitor (which is probably an HDMI one) does the issue still exist? 

 

Also have you tried the powersaving settings (its on page 40 and change the setting to DP 1.2) ? did it work? (<-- try this first and then the cable) 

1.display port in OSD settings in monitor was preset to v1.2

2. No screen flickering when monitor is hooked up via HDMI port at 60 Hz...

So what is your conclusion finally my friend?

 

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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2 hours ago, frozensun said:

1.display port in OSD settings in monitor was preset to v1.2

2. No screen flickering when monitor is hooked up via HDMI port at 60 Hz...

So what is your conclusion finally my friend?

 

well your amd cards have HDMI 1.4a which supports 144hz at 1080p unfortunately your monitor doesn't support that according to the manual (over HDMI 1.X that is) and I wasnt aware of that until I saw you above telling me that you run it at 60 hz and I was baffled as to why you would do check at that refreshrate and then took a look on the manual.. :/ 

 

Thus there is no solid conclusion to make but probably the monitor is ok since it doesnt always flicker at 144hz unless you connect it on the AMD cards. 

 

The amd cards probably are not at fault because they work fine under other refresh-rates and as far as I understand your tried them both so its unlikely that both have the same malfunctioning DP port plus I never heard or saw a card doing that.

 

Which leaves us to the cable.

 

I would guesstimate 55% being the DP cable(as cables especially cheap no name ones frequently contribute to bizarre issues like yours) ,30% being the monitor 10% the PSU and 4% both amd cards being faulty 1% the mobo(yea we didnt talk about that but it could be an issue although highly unlikely). 

 

So the easiest/faster and cheaper thing to do is to buy a trusted brand DP cable(less than 2m long) and check because if its not the problem then worse case scenario you have an extra good quality DP cable lying around. 

 

Other option would be to contact Samsung support via lifechat and see if you can RMA the monitor as for the cards if those are at fault (although again as said highly unlikely ) then there isnt much to do since they are out of warranty I assume. (just to be clear you dont have BOTH cards installed on your desktop right? because that could potentially be a culprit for a bug like this. ) 

 

As for the PSU you could try ( if you are too lazy to properly swap PSUs that is) to "Frankenstein" only the 8pin cables (from the nvidia desktop that doesnt flicker) onto your amd desktop to the amd cards run the computer again and see if it flickers. (mind that your nvidia desktop needs to be turned on otherwise the nvidia desktop PSU wont give power to your AMD cards)

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I connected the cards via DP 1.2 not HDMI and that gives 144Hz at 2560x1440 theoretically,so it should work.

Last night I lowered the RR to 120 Hz flickering was preset but not as much as on 144 Hz.

I'll try to find you plastic bag of cable,since this is the only cable I could find here in my country,no one sells DP cable anymore...

Even I had to order it.

https://www.delock.com/produkte/908_Displayport/82423/merkmale.html

This is the cable.

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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43 minutes ago, frozensun said:

 

no one sells DP cable anymore...

that's odd display port cable is a new enough standard 

Please quote or tag  @Ben17 if you want to see a reply.

If I don't reply it's probly because I am in a different time zone or haven't seen your message yet but I will reply when I see it ? 

 

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OMG,most of display port cables sold here v 1.2 support 2560x1600 but only at 120Hz.

I can't find the bag to read the exact name of the cable and look under it's specs..

But manufacture is Delock

But then if the cable is the issue it would flicker with 1660 Ti.

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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This is the cable I got:

https://www.tme.eu/ba/hr/details/ak-340100-020-s/kabeli-i-adapt-hdmi-dvi-displayport/assmann/

This is odd,on website it says it's 1.1a but under specs in pdf v 1.2....wtf????

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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11 hours ago, frozensun said:

OMG,most of display port cables sold here v 1.2 support 2560x1600 but only at 120Hz.

I can't find the bag to read the exact name of the cable and look under it's specs..

But manufacture is Delock

But then if the cable is the issue it would flicker with 1660 Ti.

amazon is your friend

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6 hours ago, papajo said:

amazon is your friend

I don't live in USA and most stuff don't ship on my country.

Besides I lowered the RR to 120Hz yesterday and played on PC whole day,not even single flicker.

So seems to be I hope so and pray to God the I solved the issue,at least found out the cause...

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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What surprised me is that at most of the cables sold around my country I see support 2560x1600 at 120 Hz,which is not common resolution for 2k monitors so I suppose 99 % of those cables support only 2k at 120 Hz...correct me if I am wrong.

 

Please do not take offence for my apparent confusion or rudeness,it's not intent me to be like that,it's just my BPD,be nice to me,and I'll return twice better,be rude and usually I get easly pissed of...I'll try to help anyone here,as long as it's something I dealt with,and even if you think I'm rude or not polite,forgive me,  it's not me it's my BPD.

Thanks for understanding.

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