Any G80SD owners?

stfn

stfn

stfn

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Joined
13 Apr 2017
Posts
43
Hey,

Would really like to find some G80SD owners here. I'm interested in this monitor in particular, and I am wondering if anyone is using it with an NVIDIA card on the DP connection, are you seeing screen black-outs occur?
This is by far the cheapest monitor I will be able to find if Samsung restocks it soon, but I've seen issues reported of this screen blackout dating from around 9 months ago. Apparently the latest firmware has made it so that it is no longer a random occurance, and it only happens at the 10 minute mark after usage. But I would like to see if there are more owners of this monitor here that can possibly share some thought. If it is still random, it would be really annoying. And not something I want to deal with.
 
I have had this issue with my asus. No problem with the ps5 but had it on the pc. Lowering to 120hz and its fine so I'm guessing it's either a windows or nvidia driver issue or maybe the hdmi.cable. I will look more into it when I have time
 
old gamer said:
I have had this issue with my asus. No problem with the ps5 but had it on the pc. Lowering to 120hz and its fine so I'm guessing it's either a windows or nvidia driver issue or maybe the hdmi.cable. I will look more into it when I have time
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Sadly this one in specific is unique to the G80SD. There's probably something wrong on your side on this one. I can find like 50 different people that have had this problem on the G80SD and its a monitor that has been out for over 8 months now, but sadly no acknowledgement from Samsung or actual fix yet.

I bought this monitor now with this issue in mind, hoping that it will get fixed. And if it wont then I can do the HDMI port as an alternative, but I would not be happy. Sadly for the average user it is impossible to reach that high level of customer support so that whoevers fault this is to fix can spoken to. There are so many people scattered over the internet but where do you even start. Most discussions end in a "you can use HDMI 2.1 port instead". But that is not a fair solution for such an expensive product.

I got the monitor for a pretty good price and its the one I wanted, but I do really hope that it will still be fixed. It's arriving tomorrow. 656EUR but yeah, that is quite the issue unfortunately.
 
Been doing some testing today and changing the hdmi cable seems to have sorted my issue out.
I almost bought the Samsung myself as I could get a good deal through work but the asus going on sale swayed me.
Anyways sorry I can't be of any use and hope things get sorted for you
 
JediFragger said:
I have the G80SD but run a 7900XTX with it and had no such issue with my DP connection (at full rgb and 240Hz ofc).
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Yeah, its exclusive to NVIDIA cards. Seen a lot of reports that AMD can use it just fine. Just really annoying to get this one sorted. Where do you even start? Nobody wants to own this fault.
 
Looking around on the net there are a lot of complaints of this on all the qd oleds and seems mostly nvidia cards. Need to test mine more, changed the hdmi cable and updated nvidia drivers and all seemed to be working OK. Time will tell I guess.
Not had a problem with the ps5 though
 
I really hate to be a bore with posting the same message as in other threads but with it being at fine at lower refresh rates and it being a 4K monitor… and being Nvidia cards… could be DSC issues.

Secondly, DSC (display stream compression) may be the culprit - you can turn this off in the monitor settings. With it on, windows can auto choose the level of compression that is applied… causing the monitors to turn on and off - this issue is exacerbated by cable bandwidth problems. I have encountered this on a 4K IPS monitor of mine which is advertised as 160hz but encounters black screen issues (occasionally black screen) unless set to 144hz - which I think avoids the compression switching behaviour that results in the black screens. It’s pretty much impossible to say for sure but I’m willing to bet that it’s the DSC. Unfortunately, it’s not possible to turn DSC off on that monitor.

If you do turn DSC off, you will be limited to 120hz at 4K connecting with a GPU via a display port (DP) 1.4 connector. The only way to get 240hz 4K without DSC enabled is to have a GPU which has a DP 2.1 output at UHBR 20 (i.e. 80gb/s).

Be warned: there are different versions of DP 2.1… you are not necessarily always getting the full UHBR 20. For example, the new AMD GPUs only output at UHBR 13.5 despite being DP 2.1. For now, you’ll need a 50 series Nvidia GPU to get 240hz 4K without DSC. As always, be very careful reviewing the specs of any card you buy (even the Nvidia ones).
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Nitefly said:
I really hate to be a bore with posting the same message as in other threads but with it being at fine at lower refresh rates and it being a 4K monitor… and being Nvidia cards… could be DSC issues.
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Understand what you are getting at but there are many reports of people going through this even at 60hz and 120hz, it really is not DSC here. And the same people will say that they do not have this issue on other 4k 240hz monitors.
 
stfn said:
Understand what you are getting at but there are many reports of people going through this even at 60hz and 120hz, it really is not DSC here. And the same people will say that they do not have this issue on other 4k 240hz monitors.
Click to expand...

Noted. My theory - unverified, just speculation - is that Windows is changing the level of compression at lower hz (high quality <—> lesser quality) and that is triggering blackouts on many monitors. At higher hz it’s stuck at a ‘lower’ quality so doesn’t change = no issues.

The only way of telling if DSC is enabled within windows is to look at NVCP and see if the DSR scaling factors are unavailable. If they aren’t there, Windows is (probably) using DSC.

However, monitors should be able to have 4k 120hz via 1.4dp without DSC so perhaps this isn’t the cause.

For those stuck with the issue, it may be worth seeing if it happens if the resolution is lowerd to 1440p. If the blackouts don’t happen at 1440p, it does suggest something ‘odd’ is happening at 4K possibly because of display bandwidth.
 
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After switching back to nvidia I can confirm unfortunately that random black-outs occur via dp 1.4 with rtx 5070ti.
It's fine with hdmi 2.1 cable, but to use gsync you need to connect monitor via dp 1.4 .
 
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