7680x2160 240Hz or 120Hz is not avalable in linux for B580

[RomanV]

Display setting of 7680x2160 240Hz is not available for selection why it is supported by display

display model: 57" Odyssey Neo G9 G95NC

video card model: SPARKLE Intel® Arc™ B580 TITAN OC

OS: OpenSuse Tubleweed, last update @ about 4 December 2025

As I understand raw data flow is not possible for via DP or HDMI but with compression this setting is supported. Support is also claimed by specs from card producer:

RESOLUTION & REFRESH
⚫ HDMI 2.1 (Max): 7680 x 4320 @120Hz
⚫ 3x DisplayPort 2.1 (Max): 7680 x 4320@60Hz

src: https://www.sparkle.com.tw/files/20241203213858182.pdf

(I assume at least 7680x2160 @ 120Hz should work)

I have tried to manually add 7680x2160 settings, but only 7680x2160 @ 60Hz was set with  success. Procedure was approximately following:

cvt 7680 2160 60

xrandr --newmode "7680x2160_60.00" <modeline_output>

xrandr

xrandr --addmode <monitor_name> "7680x2160_60.00"

xrandr --output <monitor_name> --mode "7680x2160_60.00"

 with corresponding attempts for 60, 120 and 240 Hz.

Attached file output for:

EDID shows some error in block related to this resolution

xrandr

lspci

uname -r

Linux localhost.localdomain 6.18.0-1-default #1 SMP PREEMPT_DYNAMIC Tue Dec  2 08:54:32 UTC 2025 (6ce3f15) x86_64 x86_64 x86_64 GNU/Linux

[Mike_Intel]

Hello RomanV,

Thank you for posting in Intel community Forum.

For me to better understand and diagnose the issue further, let me ask you to provide detailed responses to the following questions. This information will help me isolate the problem and determine the most appropriate course of action moving forward.

1. What is the exact Linux OS that you are using?
2. Are you having this issue with other OS using the same components and cables?
3. Have you tried different monitor?
4. What are the troubleshooting steps that you tried before crating this thread?

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[MUC]

Samsung Odyssey Neo G9 (G95NC) – user manual attached

7680 x 2160 @ 240 Hz (pixel clock: 4233.6 MHz)

7680 x 2160 @ 120 Hz (pixel clock: 2224.75 MHz)

Using a standard DisplayPort cable (DP 1.4a HBR3), 240 Hz is not available because the link bandwidth is insufficient. The EDID advertises 7680 x 2160 @ 240 Hz. You will need to adjust a setting in your monitor's on-screen display (OSD):

Game → Refresh Rate → 120 Hz.

Now, 7680 x 2160 @ 120 Hz should be selectable in the operating system's display settings without manual adjustments. This applies at least to Windows; unfortunately, I cannot make any statements about Linux, as I have no experience with it.

7680 x 2160 @ 120 Hz  >>>  2224.75 MHz = 206 % HBR3 … with DSC = OK

DSC = VESA's Display Stream Compression standard; applied automatically.

To use 7680 x 2160 @ 240 Hz, you will need either a certified Ultra High Speed ​​HDMI cable (at least 2 meters, maximum 3 meters long) or a certified DisplayPort 2.1 DP54 cable. Since the monitor does not support HDMI VRR, I recommend using VESA’s AdaptiveSync over DisplayPort. I’d suggest the following cable:

Club 3D CAC-1093 - DP54 VESA Certified Cable 3m / 9.84ft

I strongly suspect that Sparkle based the Arc B580 TITAN OC on the reference design, meaning the card has:

1 x HDMI 2.1 FRL

2 x DisplayPort 2.1 UHBR10

1 x DisplayPort 2.1 UHBR13.5 (like the monitor)

UHBR13.5 link rate means a data transfer capacity of 54 Gbps (13.5 Gbps x 4 lanes = 54). That's why the corresponding cable is also called DP54.

This is the UHBR13.5 port:

Connect the DP54 cable to this port and set the refresh rate back to 240 Hz in the monitor's OSD. For details, please refer to the user manual.

UHBR13.5 (4 x 13.5 Gbps): 7680 x 2160 @ 240 Hz  >>>  4233.6 MHz = 197% UHBR13.5 ... with DSC = OK

[RomanV]

I haven't yet tried what is described yet, but just by for the quality of your reply THANK YOU!

This feels like a lot of trickery from manufacturers to avail all the advertised functionality.

So far:
1. not using Video card port as marked in picture
2. using DP cable from monitor box, I suspect it might not be UHBR13.5 / DP54 certified
3. On Linux, so drivers might be an issue too. Yet, I have the most latest version.
Learning all the abbreviations and terms.

I will report on my progress in coming days. Thnx again!

[RomanV]

Update 1

Using Display Port marked on screen (one in the middle among DP) instantly allowed me to select 7680 x 2160 @120 Hz in Display menu (KDE, Tumbleweed). But I was not able to switch to it: system tries to switch to new seetings, I see black screen, then by timeout about 15 secs it switches back.

I understand now that "HDMI 2.1 FRL" means I can not have any 7680 x 2160 via HDMI on B580. Maybe 30Hz, but it's a shame compared to 240Hz.
So far what i have with HDMI is 5120 x 1440 @ 60 Hz.
Maybe together with DP HMDI can give 2x 4k @ 60+ Hz.

[RomanV]

Update 2

I'm now trapped in black screen when using middle DP port, as on screen. While using it showed 120 Hz in Display menu, I was not able to switch to it, black screen was shown. And after reboot looks like system is trying to use 120 Hz it seems, but display display stays black.
So now, I have returned to 7680 x 2160 @ 60 Hz on different DP, or can use HDMI for 60 Hz

I'll try to do Ubuntu from a USB stick next, as it is claimed to be supported / tools are made for it. Yet have doubts.

[RomanV]

Update 3

I'm having 7680 x 2160 @ 120 Hz 😁

• I think I have upgraded my linux (OpenSUSE Tumbleweed) distribution and there are some relevant updates.
• I'm using DP port the one which is further from HDMI (not sure if relevant)
• I'm now in XFCE X11, was on KDE Plasma X11 and Wayland. made some appearance config and it now looks gorgeous. May be Plasma is ok too, might check later.
• I'm using cables that came in the box with display.

uname -a

6.18.2-1-default #1 SMP PREEMPT_DYNAMIC Fri Dec 19 10:15:01 UTC 2025

I'll try to check other ports including HDMI, KDE plasma maybe, not sure on gnome.
Don't have any good Windows hardware, 2x 4k @ 60 Hz works via 2x HDMI cables via usb-c "concentrator" 2x 4k @ 60 is max it can give.

Also will look for 240 Hz 😃

Updates might be somewhat delayed from this point.

[RomanV]

i have got Radeon RX 9070 XT and it does 7680x2160 at 240Hz from the box.

With B580 only 120 Hz were available.
I believe it's card limitation. As I was using same DP (there is only one DP on this monitor). If I will use HDMI.
Might check if HDMI can do 120 Hz. It can do 60 for sure.

I think this case can be closed. Cant say it is fully solved.

[MUC]

If your Radeon RX 9070 XT works perfectly with your existing DisplayPort cable, the cable is probably fine.

However, with HDMI, you'll have to accept limitations under Linux. The Fixed Rate Link protocol is not available in the AMD Linux driver, so you can only achieve a maximum resolution of 3840 x 1080 @ 120 Hz (Monitor setting: Game → Refresh Rate → 120 Hz).

[KennethB_Intel]

Hello RomanV,

To further assist you, could you please provide us the SSU logs of your system? To get the SSU logs, kindly download the application below:

• Intel® System Support Utility for the Linux* Operating System

Once we have the SSU logs, we will further check this internally.

Thank you for your cooperation.

Best regards,

Kenneth B.

Intel Customer Support Technician

[RomanV]

I run the script from, resulting txt is attached.

Some scans were skipped, because I refused to install additional tools (i'm not on debian derivative, I have RPM derivative.)

What was skipped
This product is not supported on this operating system.
    Would you like to try to scan? (y/n)
y
The wodim package is recommended to retrieve wodim details.
    Would you like to try and install it now? (y/n)
n
The net-tools package is recommended to retrieve ifconfig details.
    Would you like to try and install it now? (y/n)
n
The route package is recommended to retrieve route details.
    Would you like to try and install it now? (y/n)

[Mike_Intel]

Hello RomanV,

Thank you for the information provided.  

I will do further research on this matter and post the response on this thread once it is available.

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[Mike_Intel]

Hello RomanV,

I hope this message finds you well.

I am currently checking this issue in our lab and while doing that, let me ask you to try the following:

Please try a DP 2.1 (Connected to Middle Slot) of GPU or HDMI 2.1, note that that the cable versions are important for these kinds of issues.

If you are still having the same issue after trying the cables above, please generate a new set of SSU and EDID.

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[Mike_Intel]

Hello RomanV,

I hope this message finds you well. 

Were you able to check the previous post?

Please let us know if you still need assistance.

Best regards,

Michael L.

Intel Customer Support Technician

[RomanV]

I think I have good cables, I am able to get it working with another card. I might share some additional info if you need a bit later, but I think your engineers might check it themselfs and say that it was tested on this resolutions and frequencies. Not to be rude, but some brands brag about this, and I think intel can do it too.

Will look if this card can handle AI, I saw intel has some dedicated software for this cards.

[Mike_Intel]

Hello RomanV,

Thank you for the quick update.

Upon further review, please check my Graphics Bandwidth calculations below:

8K 240Hz

8K 120 Hz

For 8K 240Hz - You can only use Display port 2.1

For 8K 120Hz - You can only use Display port 2.1 and HDMI 2.1

You can also to these calculations here: https://trychen.com/feature/video-bandwidth

If you have questions, please let us know. Thank you.

Best regards,

Michael L.

Intel Customer Support Technician

[Mike_Intel]

Hello RomanV,

I hope this message finds you well. 

I am just making a follow up to check if you were able to review my last post about bandwidth calculations.

Please let us know if you still need assistance.

Best regards,

Michael L.

Intel Customer Support Technician

[Mike_Intel]

Hello RomanV,

I hope you are having a good day.

I am sending another follow up to check if you were able to review my bandwidth calculation. 

Since we have not heard back from you, I need to close this inquiry. 

If you need further assistance, please post a new question as this thread will no longer be monitored. 

Thank you and have a great day. 

Best regards,

Michael L.

Intel Customer Support Technician

[RomanV]

Hi Mike, 

I would like to not calculate or communicate here but enjoy 8k @240 Hz refresh rate 😃

My expectation is to have b580 support 8k@240Hz or clearly say it is not support, only 8k@120Hz is. I will settle with that and not spend more time.

So far I figured out 8k@120Hz can be done, and this is good. But I have hopes Intel can pull 8k@240Hz too.

Thanks for the calculator, it helps to get the raw numbers. But raw numbers point to the work to be done before making this alive 😃

8k@240Hz is amazing, and I wish we all can enjoy it

[MUC]

I can't offer any advice regarding Linux because I'm not familiar with it, but demanding connections like yours depend heavily on the cable. Even if the Radeon RX 9070 XT delivers 240 Hz with the existing DisplayPort cable, that's no guarantee that the cable is suitable for any hardware. A mechanism called Link Training is used when establishing such high bandwidth links. This can cause the link to fall back to lower modes, which doesn't necessarily indicate missing capabilities of the video source.

The explanations in the web link refer to HDMI, but also apply analogously to DisplayPort.

Please try a DisplayPort 2.1 DP54 cable explicitly certified by VESA, such as the Club 3D CAC-1093.

[MUC]

One more note to the CAC-1093:

Max Resolution: 8K120Hz

---

This refers to 7680 x 4320 @ 120 Hz = 4302.25 MHz pixel clock with Coordinated Video Timing - Reduced Blanking (CVT-RB).

7680 x 2160 is not referred to as 8K, but as Dual UHD. According to the monitor's user manual, this corresponds to 4233.6 MHz pixel clock @ 240 Hz.

This should work, as the monitor also does not support a higher link rate than UHBR13.5.