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Constellation

Odyssey G9 LC49G95T no image @ 240hz with 3080

Hi,

 

I managed to get my hands on a Zotac RTX 3080 yesterday, but as soon as i installed the drivers i got a blank screen.

It turns out that if i try to use 240hz the screen goes blank. The monitor still recognizes a signal, but it comes up black.
Bascically if i switch to 240hz, the screen goes black, and i have to factory reset the monitor to get an image on the screen again (defaulting back to 120hz).

After hours of trouble shooting i switched back to my old 2080 ti and it works right away!

What i have done / tried:

Updated Nvidia Driver 456.38. Multiple re-installs.

I just updated my firmware to 1005.4 and then to 1006.2 (from Korean site) 
I am using the included G9 DisplayPort cable but i've tried 2 other cables, same result.

I do NOT have HDR on

It does not matter if Active sync is enabled on the monitor, or if G-sync is enabled in the Nvidia Control panel.

Another thing is that it doesn’t let me select a 10 bpc color depth even at 120hz.
This also works just fine with my old RXT 2080ti card.


I'm not sure if this problem is caused by Nvidia or Samsung, but since 5120x144@240hz requires DSC  (Display stream compression) to work, i suspect it's something that have changed on the new 3000 series card's that causes the monitor to malfunction.

Any suggestions or help is very very welcome Smiley Happy




43 REPLIES 43
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Samsung Moderator
Samsung Moderator

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

I recommend reaching out to NVidia regarding this.

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Asteroid

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

response from Nvidia:
contact the manufacturer of your screen, we have no concerns or anomalies on the 3080 and 3090 chipset concerning the refresh frequencies.
So who to believe? Are we throwing our screens against a wall?

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Asteroid

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

I just did a test with a 3090 from Gigabyte. The symptoms are exactly the same. Unable to take advantage of the 240Hz frequency. So on an Asus 3080 Tuf and a Gigabyte 3090 Gaming the problem is the same. What do we have to do?

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Asteroid

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

i am going to get my 3080 tonight and having the samsung g9 i think i will have the same problem. It would be nice to know how to do it.

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Asteroid

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

I just tested with the latest version of Nvidia drivers on my 3080, and despite everything, I couldn't get to 240Hz. It gives me a black screen. A screen at 1500 euros and a graphics card at 1000 euros, the bug is expensive anyway.

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Astronaut

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

Same problem guys with the 3090, talked to Nvidia they said i need to RMA my card... Something is fishy, we need to solve this , same problem here , 240hz go blank , no 10 bit color.

Its DSC related in my opinion... I hope justice will be made soon @brolysan 

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Astronaut

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

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Constellation

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

I have this same problem with Asus TUF RTX 3090. Works just fine on 120hz, but can't enable 240hz. Very annoying buying these both today and not getting to try the 240hz.

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Astronaut

Re: Odyssey G9 LC49G95T no image @ 240hz with 3080

I'm so happy to hear its not just me. Same issue. ASUS TUF 3090 and can't get into 240hz. Had to reset settings on my monitor to get a display.

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