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9070 XT - 2x HDMI high refresh displays (144 and 120 Hz) not working

GhostRyder said:
I am not saying its not, I was curious if there was a work around (At least as a temp solution) using a different DP adaptor since your current one was limiting the TV. My friends RX 6900 uses DP monitors with two different high refresh setups and its not having that issue that I am aware of (His main is a 1440p 144hz monitor and the other is some 1440p 120hz monitor).
Click to expand...
The active adapter is not limiting the display. It worked perfectly on the RTX 3080 (at 4K120).

As I said, if is somehow even worse if I use 2x HDMI straight into the GPU (even if I limit the 144 Hz display to 120 Hz) - driver timeouts then a hard crash.

This is an AMD issue. Hopefully, they can fix it via a driver update.
 
And what RX 9070 XT model do you have?

Natively, RX 9070 (XT) has 3 DP and 1 HDMI outputs. So it may take a while to adapt drivers for vendor specific models.
 
King Mustard said:
The active adapter is not limiting the display. It worked perfectly on the RTX 3080 (at 4K120).

As I said, if is somehow even worse if I use 2x HDMI straight into the GPU (even if I limit the 144 Hz display to 120 Hz) - driver timeouts then a hard crash.

This is an AMD issue. Hopefully, they can fix it via a driver update.
Click to expand...
I know I read that it worked on the previous card, I was wanting to see which one it was to see if there was something that caught my eye. I will say that the default configuration is only one single HDMI and most cards stick to that layout. I was thinking maybe its an HDMI issue specific on AMD/That card is all and was trying to think of a solution to help in the meantime.
 
King Mustard said:
That is interesting. I was not aware of that.

It is the Sapphire Pulse:

Click to expand...
To add more details which are not neccesary, I have the exact same card and tried on two setups AMD and INTEL, also using cert 2.1hdmi cables the difference is I can´t even make it run 4k120+4k60 cause it crashes just as you described I can go any settings on C4 but as soon as I set C2 (secondary monitor) above FHD60 it crashes. And I will add also that I had no issues on RTX3070. Hope they will update soon but kinda loosing hope and ordered RTX4080.
 
King Mustard said:
That is interesting. I was not aware of that.

It is the Sapphire Pulse:

Click to expand...

I believe is the cable, length and frequencies that worked on Nvidia DP 1.4, can't work on DP 2.1 AMD as AMD GPU trough 2.1 port sends different signal frequencies cable is not able to transmit properly to the screen.

Suppose to be backwards compatible but, a DP port will not work on 2m length for 2.1 specifications , I believe the maximum length for DP 2.1 is 1.6 meters. Make sure you can connect your screen on that length.
I'm not saying AMD might not have issue but, I believe in this case cable is problematic. Here is the link of the cable I have and is Certified for the length and Hz
Club3D DP 1.6 M 8mm thickness compared with 6mm standard.
If you secondary screen has only HDMI than here is a cable but is expensive :HDMI 2.1 I guess hast to be CAC -1374 to be fully 2.1. If you use some Amazon basic cable I would change it.

Even in the case cable will not save your issue you'll be left with a trusty cable which will be useful on Nvidia and DP for me is always the choice instead of HDMI.

Believe it or not, this cable improved image quality on my 1440P screen, textures in the shadow are more clear and deeper blacks on my old 1080Ti. Don't regret spending 20 on it.
 
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it's all about cables man!
 
LittleBro said:
Sapphire Pulse RX 9070 XT has no details regarding HDMI version in specs:
www.sapphiretech.com

PULSE AMD Radeon™ RX 9070 XT GPU

BOOST CLOCK Up to 2970 MHz, 16GB/256 bit DDR6. 20Gbps Effective
www.sapphiretech.com www.sapphiretech.com

Though AMD states that RX 9070 supports HDMI of 2.1b, this does not mean that both HDMI ports on Pulse support this standard.
Also, as others pointed out - cables might be the issue.
Click to expand...
I think should support on both ports but, I don't eliminate your theory.

Harakiry said:
To add more details which are not neccesary, I have the exact same card and tried on two setups AMD and INTEL, also using cert 2.1hdmi cables the difference is I can´t even make it run 4k120+4k60 cause it crashes just as you described I can go any settings on C4 but as soon as I set C2 (secondary monitor) above FHD60 it crashes. And I will add also that I had no issues on RTX3070. Hope they will update soon but kinda loosing hope and ordered RTX4080.
Click to expand...
For example in UK are many fake certifications on cables. That being said I don't have the AMD 9000 series. My screen is only 1.4 DP but the cable I bought Club3D 2.1 DP 1.6meter improved texture quality in the shadows, has better deeper blacks, I believe that is due to to the signal integrity of the DP bidirectional cable.
 
I had this same issue with my RX 9070 XT Sapphire Pulse, using the same cables that I had hookedup to my 3080. What fixed it for me is that the two HDMI ports on the sapphire pulse seem to be pretty close together. I had found that my two HDMI cables would plug into each other, but would produce some friction. I found one very low profile HDMI cable to plug next to my regular HDMI cable, and that seemed to work. It seems as if the ports are maybe a little too close together/sensitive, and you may have two cables with larger plastic housing that could be pressing against one another stopping broth from making a good signal.
 
King Mustard said:
That is interesting. I was not aware of that.

It is the Sapphire Pulse:

Click to expand...
May check the new drivers today. Its directly mentions your issue in them as fixed.
Beta 25.3.2
  • Incorrect gamma is exhibited while playing Counter-Strike 2 and using MSAA x8 on Radeon RX 9070 series graphics products.
  • Intermittent application crash may be observed in Indiana Jones and the Great Circle when settings are set to "Very Ultra" quality and Path Tracing is enabled. Users experiencing this issue are recommended to use the default Ray Tracing settings as a temporary workaround.
  • 3rd party tools that rely on our ADL SDK for detecting ROPs count will incorrectly report 64 ROPs.
  • Lower than expected performance may be observed while playing Assetto Corsa Competizione on Radeon RX 9000 series graphics products.
  • Intermittent system or application crash may be observed while pressing Alt-Tab during gameplay on some AMD Radeon Graphics Products such as the Radeon RX 6000 Series.
  • Intermittent system or application crash may be observed while using multiple high refresh rate (+120 Hz) monitors with HDMI connections.
  • Windows Update may overwrite the installed AMD Software: Adrenalin Edition with an older version of the graphics driver on Radeon RX 9000 series graphics products
 
GhostRyder said:
May check the new drivers today. Its directly mentions your issue in them as fixed.
Beta 25.3.2
  • Incorrect gamma is exhibited while playing Counter-Strike 2 and using MSAA x8 on Radeon RX 9070 series graphics products.
  • Intermittent application crash may be observed in Indiana Jones and the Great Circle when settings are set to "Very Ultra" quality and Path Tracing is enabled. Users experiencing this issue are recommended to use the default Ray Tracing settings as a temporary workaround.
  • 3rd party tools that rely on our ADL SDK for detecting ROPs count will incorrectly report 64 ROPs.
  • Lower than expected performance may be observed while playing Assetto Corsa Competizione on Radeon RX 9000 series graphics products.
  • Intermittent system or application crash may be observed while pressing Alt-Tab during gameplay on some AMD Radeon Graphics Products such as the Radeon RX 6000 Series.
  • Intermittent system or application crash may be observed while using multiple high refresh rate (+120 Hz) monitors with HDMI connections.
  • Windows Update may overwrite the installed AMD Software: Adrenalin Edition with an older version of the graphics driver on Radeon RX 9000 series graphics products
Click to expand...
Unfortunately no improvement at all on my end.
 
King Mustard said:
Unfortunately no improvement at all on my end.
Click to expand...
I know for example that the powercolor reaper has stated this with their display connections specs, so maybe there is some limitations with your card too.

''1 x HDMI 2.1b，3 x DisplayPort 2.1a (only 2x simultaneous DP2.1 connections can be supported)''
Reaper AMD Radeon™ RX 9070 XT 16GB GDDR6∣PowerColor

I had some problems too with my reaper. I have 2x 1440p144hz displays through DP and the LG CX through HDMI2.1, but no matter what i couldnt make the 3rd display work it wouldnt even show up on the HDMI input. As soon as i turned off 1 DP monitor it would show up somehow.

After searching for a hours some legend on an old reddit thread advised to duplicate the displays in the display settings instead of extending it. So after i put it on duplicate every display had an input and worked showing the same duplicate screen after that pressed the extend screen option and it worked perfectly afterwards. So you can try that and see if it works.
 
King Mustard said:
Unfortunately no improvement at all on my end.
Click to expand...
Darn, it does say improvement/fix on those so at least they are working on it. I was hoping it was resolved with this. But it does look it just has to do with dual HDMI setups which is why my friends card works fine on DP. Only thing I can think is maybe try playing with the refresh rate on the main one again like when you dropped it to 120hz and seeing if this improved it matching the high refresh rate. Otherwise if no improvements looks like you will have to deal with the DP adaptor reducing it to 60hz for right now until they patch is in the next couple updates.

Sorry, sucks to deal with that.
 
King Mustard said:
I created a thread about this on the Overclockers UK forum and also sent an AMD vendor representative on there my crash logs.

So far, I have not heard anything but hopefully, he will address it on the forum or AMD will address it within the next few driver updates.

Maybe you could jump into the thread and explain how similar your issue is?
Click to expand...

SO… I finally got around to trying this out tonight.

To reiterate:

3x display, 1440p240hz, 1440p165hz, 4k120hz, dp, dp, hdmi respectively. 9070XT Nitro.

When using the third port (1st HDMI) I’m limited to 60hz on the LG c2, otherwise I lose singal. When I use the last port (2nd HDMI) I can enable 120hz and still retain signal on the C2 while having my other monitors at 240/165hz concurrently.

So either there’s something fishy about how vendors have wired one of their ports, or it may be driver related. Im using a 30’ optical HDMI cable from rupiro.
 
Bandwidth limitations on-card, would be my guess. I know there's stated limits to 2 concurrent DP links on the DP-side of the 3xDP cards.
So, I assume AIB(s) decided: "Let's make both DPs concurrently usable, but we'll take the single HDMI and put it on a transceiver" (effectively, splitting a HDMI FRL6 link)

Might end up needing to take one of the DPs, convert to HDMI 2.1
us.caldigit.com

Active DisplayPort 2.0 to HDMI 2.1 Adapter

HDMI 2.1 - Supports Display, Monitor or TV up to 8K 60 Hz (7680x4320@60Hz with DSC or 30Hz without DSC) High bandwith Audio and Video - Active Adapter, HDCP 2.3, DSC 1.32a, HDR, Eyefinity Support, HDCP Compliant Ideal for use with Thunderbolt and USB-C docks with DisplayPort to convert DP to...
us.caldigit.com us.caldigit.com
1742694262434.png

Edit: Amazon Link to Product: https://www.amazon.com/CalDigit-DisplayPort-Adapter-Refresh-Eyefinity/dp/B0BY3SW376?
 
Last edited:
LabRat 891 said:
Bandwidth limitations on-card, would be my guess. I know there's stated limits to 2 concurrent DP links on the DP-side of the 3xDP cards.
So, I assume AIB(s) decided: "Let's make both DPs concurrently usable, but we'll take the single HDMI and put it on a transceiver" (effectively, splitting a HDMI FRL6 link)

Might end up needing to take one of the DPs, convert to HDMI 2.1
us.caldigit.com

Active DisplayPort 2.0 to HDMI 2.1 Adapter

HDMI 2.1 - Supports Display, Monitor or TV up to 8K 60 Hz (7680x4320@60Hz with DSC or 30Hz without DSC) High bandwith Audio and Video - Active Adapter, HDCP 2.3, DSC 1.32a, HDR, Eyefinity Support, HDCP Compliant Ideal for use with Thunderbolt and USB-C docks with DisplayPort to convert DP to...
us.caldigit.com us.caldigit.com
View attachment 391073
Edit: Amazon Link to Product: https://www.amazon.com/CalDigit-DisplayPort-Adapter-Refresh-Eyefinity/dp/B0BY3SW376?
Click to expand...
I think you are 100% correct in this. I have this exact same card. The Sapphire Pulse RX 9070XT. I have both HDMI ports connected to a Sony 4K TV at 4K@60Hz and an LG C2 4K TV at 3840 x 2160 @ 120Hz but 4:2:0 and no HDR. The C2 was working perfectly when connected to a 3080 but I kept experiencing black screens with the 9070XT. Also I couldn't get the 4K@120Hz and 4:4:4 with HDR to work at all on the 9070XT.
It was a simple test to prove your theory that the bandwidth was being split between the HDMI ports. I simply disconnected the Sony 4K TV and I had full bandwidth on the C2. Now the LG C2 works at 3840 x 2160 120Hz and the full 4:4:4 color format with HDR.
I have a Reborn DisplayPort 1.4 to HDMI 2.1 adapter ordered from Amazon arriving tomorrow (I already had it ordered because I suspected the problem was with the HDMI). I'll test it with the Sony 4K TV when it arrives but as long as it works at 4K@60Hz it will be fine for the other TV. Also, I I'll try it with the C2 in order to test for full bandwidth thru the adapter, in case I get another LG OLED TV.

I created an account just to reply because your idea was correct. The HDMI ports are bandwidth limited.
 
OldMan said:
I think you are 100% correct in this. I have this exact same card. The Sapphire Pulse RX 9070XT. I have both HDMI ports connected to a Sony 4K TV at 4K@60Hz and an LG C2 4K TV at 3840 x 2160 @ 120Hz but 4:2:0 and no HDR. The C2 was working perfectly when connected to a 3080 but I kept experiencing black screens with the 9070XT. Also I couldn't get the 4K@120Hz and 4:4:4 with HDR to work at all on the 9070XT.
It was a simple test to prove your theory that the bandwidth was being split between the HDMI ports. I simply disconnected the Sony 4K TV and I had full bandwidth on the C2. Now the LG C2 works at 3840 x 2160 120Hz and the full 4:4:4 color format with HDR.
I have a Reborn DisplayPort 1.4 to HDMI 2.1 adapter ordered from Amazon arriving tomorrow (I already had it ordered because I suspected the problem was with the HDMI). I'll test it with the Sony 4K TV when it arrives but as long as it works at 4K@60Hz it will be fine for the other TV. Also, I I'll try it with the C2 in order to test for full bandwidth thru the adapter, in case I get another LG OLED TV.

I created an account just to reply because your idea was correct. The HDMI ports are bandwidth limited.
Click to expand...
Wow.
Sincerely, thank you.

Even though I am not in exactly the same boat as OP, I went ahead and ordered one of the Caldigit DP2.0->HDMI2.1 adapters, myself.
My situation involves multiple displays, not showing up in the right order. AMD cards sometime after the Fury, prioritize DP outputs for POST and Display Order in-OS.
I'm hoping that I can put my 32" 4K OLED back on HDMI2.1 via the adapter, but w/ it being the primary screen (DP-out).
If I'm wrong, at least I'll have the necessary adapter for connecting 2x HDMI2.1 displays (as-was the topic of the thread)
 
OldMan said:
I think you are 100% correct in this. I have this exact same card. The Sapphire Pulse RX 9070XT. I have both HDMI ports connected to a Sony 4K TV at 4K@60Hz and an LG C2 4K TV at 3840 x 2160 @ 120Hz but 4:2:0 and no HDR. The C2 was working perfectly when connected to a 3080 but I kept experiencing black screens with the 9070XT. Also I couldn't get the 4K@120Hz and 4:4:4 with HDR to work at all on the 9070XT.
It was a simple test to prove your theory that the bandwidth was being split between the HDMI ports. I simply disconnected the Sony 4K TV and I had full bandwidth on the C2. Now the LG C2 works at 3840 x 2160 120Hz and the full 4:4:4 color format with HDR.
I have a Reborn DisplayPort 1.4 to HDMI 2.1 adapter ordered from Amazon arriving tomorrow (I already had it ordered because I suspected the problem was with the HDMI). I'll test it with the Sony 4K TV when it arrives but as long as it works at 4K@60Hz it will be fine for the other TV. Also, I I'll try it with the C2 in order to test for full bandwidth thru the adapter, in case I get another LG OLED TV.

I created an account just to reply because your idea was correct. The HDMI ports are bandwidth limited.
Click to expand...
That still unfortunately does not explain why it is also not working when I use an active 4K120 HDMI to DP adapter for my second display, which worked perfectly on my RTX 3080.
 
King Mustard said:
That still unfortunately does not explain why it is also not working when I use an active 4K120 HDMI to DP adapter for my second display, which worked perfectly on my RTX 3080.
Click to expand...
I've seen mixed results from these Display Port adapters. That's why I only ordered one as a last resort. I'll test it with my C2 when it arrives later today. As for now LG C2 is working at full bandwidth but only when I'm using one HDMI port on the card.

On another forum (I think it was an AMD forum) I saw someone recommend Cable Matters 8K DisplayPort 1.4 to HDMI 2.1 Adapter. Some people said they only got it to work only after a firmware update to the adapter. That seemed like another headache so I ordered a different adapter.

The CalDigit DisplayPort 2.0 to HDMI 2.1 has mixed results in the reviews from AMD users also. A couple saying they couldn't get VRR to work at all with the adapter and one screen shot showed that HDR wasn't working.
 
OldMan said:
I've seen mixed results from these Display Port adapters. That's why I only ordered one as a last resort. I'll test it with my C2 when it arrives later today. As for now LG C2 is working at full bandwidth but only when I'm using one HDMI port on the card.

On another forum (I think it was an AMD forum) I saw someone recommend Cable Matters 8K DisplayPort 1.4 to HDMI 2.1 Adapter. Some people said they only got it to work only after a firmware update to the adapter. That seemed like another headache so I ordered a different adapter.

The CalDigit DisplayPort 2.0 to HDMI 2.1 has mixed results in the reviews from AMD users also. A couple saying they couldn't get VRR to work at all with the adapter and one screen shot showed that HDR wasn't working.
Click to expand...
I had no choice but to get the active adapter (Cable Matters DP 1.4 to HDMI) as my RTX 3080 only had 1x HDMI port and I have 2x OLED TVs as monitors (TVs never use DisplayPort).

It worked perfectly on the RTX 3080. This is, therefore, an AMD issue.
 
Does it work with well with DP to HDMI adapter?

Well, it's more like Sapphire issue rather than AMD issue. It was Sapphire's idea to put there 2 HDMI ports and make them share their bandwith.
 
Ah, I see what you're saying. The adapter worked with the 3080 but not the 9070XT. I saw similar results from the reviews of the adapters on Amazon. NVidia users had glowing reviews and AMD users reported not all features were working, in particular VRR.
 
LittleBro said:
Does it work with well with DP to HDMI adapter?

Well, it's more like Sapphire issue rather than AMD issue. It was Sapphire's idea to put there 2 HDMI ports and make them share their bandwith.
Click to expand...
No, stuck at 60 Hz.

And AMD should have oversight; especially if it will make their brand look bad.
 
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