Threaded Mode | Linear Mode

foo · 08-23-2026, 05:03 AM

Want it to run on 240hz as it should but it will only stay at 120 refresh rate even if i use CRU.
Any monitor overclockers here have solution?
Looking for MCM101 firmware to factory hardware reset it back to normal. 4k 240hz used to work back when it's on old factory setting.

MUC · 08-23-2026, 08:25 PM

Which graphics card are you using?
CRU shouldn't be necessary to run the monitor at 4K @ 240 Hz. Revert any changes you made using CRU by running "reset-all.exe".

I would not recommend downgrading the monitor's firmware. The current firmware is MCM105. Furthermore, it is highly unlikely that the inability to run at 4K @ 240 Hz is caused by the monitor's firmware. Please check the settings in the monitor's On-Screen Display (OSD) and consult the manual to select the settings that enable 4K @ 240 Hz.

The DisplayPort EDID data I have indicates that the monitor expects 4K @ 240 Hz according to VESA's CVT-RB standard (2332 MHz pixel clock). Any modern graphics card featuring DisplayPort 1.4a with DSC should be able to handle this monitor.

foo · (Last edited: 08-25-2026, 02:13 PM by foo)

(08-23-2026 08:25 PM)MUC Wrote: Which graphics card are you using?
CRU shouldn't be necessary to run the monitor at 4K @ 240 Hz. Revert any changes you made using CRU by running "reset-all.exe".

I would not recommend downgrading the monitor's firmware. The current firmware is MCM105. Furthermore, it is highly unlikely that the inability to run at 4K @ 240 Hz is caused by the monitor's firmware. Please check the settings in the monitor's On-Screen Display (OSD) and consult the manual to select the settings that enable 4K @ 240 Hz.

The DisplayPort EDID data I have indicates that the monitor expects 4K @ 240 Hz according to VESA's CVT-RB standard (2332 MHz pixel clock). Any modern graphics card featuring DisplayPort 1.4a with DSC should be able to handle this monitor.

It used to run 4k 240hz when it was on MCM101 factory firmware but problems popping up like flickering, then they blackscreen thinking it was a powercycle issue. Which i have to wait for 5mins to boot the monitor back up to normal. All that I have to looked for solution which I looked it up everyone saying is to update the firmware.

Now it has not able to perform as it used and it shows my FPS being limit by the monitor's refresh rate to 120hz. Firmware is still on the latest version. My GPU is on the latest modern graphics which is the 9070XT. Maybe the GPU might be the current issue cause 7900XTX has right capabilities to run a 4k monitor with such framerate because of the higher VRAM it has.

And in my region, RMA are hard to trust, would take 3months or be ignored to oblivion because of reseller being piled on RMAs and not sending back to distributor properly

MUC · 08-25-2026, 08:10 PM

(08-25-2026 01:45 PM)foo Wrote: Now it has not able to perform as it used and it shows my FPS being limit by the monitor's refresh rate to 120hz. Firmware is still on the latest version. My GPU is on the latest modern graphics which is the 9070XT.

Let's take a look at what the graphics card driver detects regarding the monitor.

Please connect the monitor directly to the graphics card via DisplayPort and run edid-test.exe on your computer: https://www.monitortests.com/edid-test.zip
This will create a file named "edid-test.TXT" in the same folder. Please attach this TXT file here.

foo · (Last edited: 08-26-2026, 04:13 AM by foo)

(08-25-2026 08:10 PM)MUC Wrote:
(08-25-2026 01:45 PM)foo Wrote: Now it has not able to perform as it used and it shows my FPS being limit by the monitor's refresh rate to 120hz. Firmware is still on the latest version. My GPU is on the latest modern graphics which is the 9070XT.

Let's take a look at what the graphics card driver detects regarding the monitor.

Please connect the monitor directly to the graphics card via DisplayPort and run edid-test.exe on your computer: https://www.monitortests.com/edid-test.zip
This will create a file named "edid-test.TXT" in the same folder. Please attach this TXT file here.

here are the results

Code:

Block 0, Base EDID:

  EDID Structure Version & Revision: 1.4

  Vendor & Product Identification:

    Manufacturer: AUS

    Model: 43526

    Serial Number: ********

    Made in: week 40 of 2025

  Basic Display Parameters & Features:

    Digital display

    Bits per primary color channel: 10

    DisplayPort interface

    Maximum image size: 70 cm x 39 cm

    Gamma: 2.20

    DPMS levels: Off

    Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2

    First detailed timing includes the native pixel format and preferred refresh rate

    Display is continuous frequency

  Color Characteristics:

    Red  : 0.6767, 0.3212

    Green: 0.2490, 0.6845

    Blue : 0.1464, 0.0566

    White: 0.3134, 0.3291

  Established Timings I & II:

    DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz

    DMT 0x06:   640x480    75.000000 Hz   4:3     37.500 kHz     31.500000 MHz

    DMT 0x09:   800x600    60.316541 Hz   4:3     37.879 kHz     40.000000 MHz

    DMT 0x0b:   800x600    75.000000 Hz   4:3     46.875 kHz     49.500000 MHz

    DMT 0x10:  1024x768    60.003840 Hz   4:3     48.363 kHz     65.000000 MHz

    DMT 0x12:  1024x768    75.028582 Hz   4:3     60.023 kHz     78.750000 MHz

  Standard Timings:

    DMT 0x20:  1280x960    60.000000 Hz   4:3     60.000 kHz    108.000000 MHz

    DMT 0x23:  1280x1024   60.019740 Hz   5:4     63.981 kHz    108.000000 MHz

    DMT 0x55:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz

    DMT 0x33:  1600x1200   60.000000 Hz   4:3     75.000 kHz    162.000000 MHz

    DMT 0x52:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz

  Detailed Timing Descriptors:

    DTD 1:  3840x2160   59.996625 Hz  16:9    133.312 kHz    533.250000 MHz (699 mm x 395 mm)

                 Hfront   48 Hsync  32 Hback   80 Hpol P

                 Vfront    3 Vsync   5 Vback   54 Vpol N

    Display Range Limits:

      Monitor ranges (Bare Limits): 48-240 Hz V, 510-510 kHz H, max dotclock 2340 MHz

    Display Product Name: 'XG32UCWMG'

    Display Product Serial Number: '************'

  Extension blocks: 2

Checksum: 0x00

----------------

Block 1, CTA-861 Extension Block:

  Revision: 3

  Underscans IT Video Formats by default

  Basic audio support

  Supports YCbCr 4:4:4

  Supports YCbCr 4:2:2

  Native detailed modes: 1

  Video Data Block:

    VIC 118:  3840x2160  120.000000 Hz  16:9    270.000 kHz   1188.000000 MHz

    VIC 117:  3840x2160  100.000000 Hz  16:9    225.000 kHz   1188.000000 MHz

    VIC  97:  3840x2160   60.000000 Hz  16:9    135.000 kHz    594.000000 MHz

    VIC  96:  3840x2160   50.000000 Hz  16:9    112.500 kHz    594.000000 MHz

    VIC  95:  3840x2160   30.000000 Hz  16:9     67.500 kHz    297.000000 MHz

    VIC  94:  3840x2160   25.000000 Hz  16:9     56.250 kHz    297.000000 MHz

    VIC  93:  3840x2160   24.000000 Hz  16:9     54.000 kHz    297.000000 MHz

    VIC  63:  1920x1080  120.000000 Hz  16:9    135.000 kHz    297.000000 MHz

    VIC  64:  1920x1080  100.000000 Hz  16:9    112.500 kHz    297.000000 MHz

    VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz

    VIC  31:  1920x1080   50.000000 Hz  16:9     56.250 kHz    148.500000 MHz

    VIC  34:  1920x1080   30.000000 Hz  16:9     33.750 kHz     74.250000 MHz

    VIC  33:  1920x1080   25.000000 Hz  16:9     28.125 kHz     74.250000 MHz

    VIC  32:  1920x1080   24.000000 Hz  16:9     27.000 kHz     74.250000 MHz

    VIC   4:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz

    VIC  19:  1280x720    50.000000 Hz  16:9     37.500 kHz     74.250000 MHz

    VIC  18:   720x576    50.000000 Hz  16:9     31.250 kHz     27.000000 MHz

    VIC  17:   720x576    50.000000 Hz   4:3     31.250 kHz     27.000000 MHz

    VIC   3:   720x480    59.940060 Hz  16:9     31.469 kHz     27.000000 MHz

    VIC   2:   720x480    59.940060 Hz   4:3     31.469 kHz     27.000000 MHz

    VIC   1:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz

  Audio Data Block:

    Linear PCM:

      Max channels: 2

      Supported sample rates (kHz): 48 44.1 32

      Supported sample sizes (bits): 24 20 16

  Speaker Allocation Data Block:

    FL/FR - Front Left/Right

  Colorimetry Data Block:

    BT2020YCC

    BT2020RGB

  HDR Static Metadata Data Block:

    Electro optical transfer functions:

      Traditional gamma - SDR luminance range

      SMPTE ST2084

    Supported static metadata descriptors:

      Static metadata type 1

    Desired content max luminance: 107 (507.620 cd/m^2)

    Desired content max frame-average luminance: 77 (265.047 cd/m^2)

    Desired content min luminance: 1 (0.000 cd/m^2)

  Video Capability Data Block:

    YCbCr quantization: Selectable (via AVI YQ)

    RGB quantization: Selectable (via AVI Q)

    PT scan behavior: Always Underscanned

    IT scan behavior: Always Underscanned

    CE scan behavior: Always Underscanned

  Vendor-Specific Data Block (AMD), OUI 00-00-1A:

    Version: 3.3

    Minimum Refresh Rate: 48 Hz

    Maximum Refresh Rate: 240 Hz

    Flags 1.x: 0x00

    Flags 2.x: 0xa0

    Maximum luminance: 107 (507.620 cd/m^2)

    Minimum luminance: 1 (0.000 cd/m^2)

    Unknown: 0x4d 0x01

  Detailed Timing Descriptors:

    DTD 2:  2560x1440   59.950550 Hz  16:9     88.787 kHz    241.500000 MHz (699 mm x 395 mm)

                 Hfront   48 Hsync  32 Hback   80 Hpol P

                 Vfront    3 Vsync   5 Vback   33 Vpol N

    DTD 3:  2560x1440  119.997589 Hz  16:9    182.996 kHz    497.750000 MHz (699 mm x 395 mm)

                 Hfront   48 Hsync  32 Hback   80 Hpol P

                 Vfront    3 Vsync   5 Vback   77 Vpol N

Checksum: 0x2f

----------------

Block 2, DisplayID Extension Block:

  Version: 1.2

  Extension Count: 0

  Display Product Type: Standalone display device

  Video Timing Modes Type 1 - Detailed Timings Data Block:

    DTD:  3840x2160   96.999779 Hz  16:9    219.607 kHz    878.430000 MHz (aspect 16:9, no 3D stereo)

               Hfront   48 Hsync  32 Hback   80 Hpol P

               Vfront    3 Vsync   5 Vback   96 Vpol N

    DTD:  3840x2160  119.998907 Hz  16:9    274.438 kHz   1097.750000 MHz (aspect 16:9, no 3D stereo)

               Hfront   48 Hsync  32 Hback   80 Hpol P

               Vfront    3 Vsync   5 Vback  119 Vpol N

    DTD:  3840x2160  100.000000 Hz  16:9    226.500 kHz    906.000000 MHz (aspect 16:9, no 3D stereo)

               Hfront   48 Hsync  32 Hback   80 Hpol P

               Vfront    3 Vsync   5 Vback   97 Vpol N

    DTD:  3840x2160  240.016468 Hz  16:9    583.000 kHz   2332.000000 MHz (aspect 16:9, no 3D stereo)

               Hfront   48 Hsync  32 Hback   80 Hpol P

               Vfront    3 Vsync   5 Vback  261 Vpol N

    DTD:  3840x2160  143.987684 Hz  16:9    333.188 kHz   1332.750000 MHz (aspect 16:9, no 3D stereo)

               Hfront   48 Hsync  32 Hback   80 Hpol P

               Vfront    3 Vsync   5 Vback  146 Vpol N

  Checksum: 0xce

Checksum: 0x90

----------------

Preferred Video Timing if only Block 0 is parsed:

  DTD   1:  3840x2160   59.996625 Hz  16:9    133.312 kHz    533.250000 MHz (699 mm x 395 mm)

                 Hfront   48 Hsync  32 Hback   80 Hpol P

                 Vfront    3 Vsync   5 Vback   54 Vpol N

----------------

Preferred Video Timings if Block 0 and CTA-861 Blocks are parsed:

  DTD   1:  3840x2160   59.996625 Hz  16:9    133.312 kHz    533.250000 MHz (699 mm x 395 mm)

                 Hfront   48 Hsync  32 Hback   80 Hpol P

                 Vfront    3 Vsync   5 Vback   54 Vpol N

  VIC 118:  3840x2160  120.000000 Hz  16:9    270.000 kHz   1188.000000 MHz

                 Hfront  176 Hsync  88 Hback  296 Hpol P

                 Vfront    8 Vsync  10 Vback   72 Vpol P

----------------

Native Video Resolution:

  3840x2160

----------------

edid-decode SHA: 84ddf9155376 2021-10-03 10:37:45

Warnings:

Block 1, CTA-861 Extension Block:

  Video Capability Data Block: S_PT is equal to S_IT and S_CE, so should be set to 0 instead.

  Display Product Serial Number is set, so the Serial Number in the Base EDID should be 0.

EDID:

  Base EDID: Some timings are out of range of the Monitor Ranges:

    Vertical Freq: 24.000 - 240.016 Hz (Monitor: 48.000 - 240.000 Hz)

    Horizontal Freq: 27.000 - 583.000 kHz (Monitor: 510.000 - 510.000 kHz)

Failures:

EDID:

  DisplayID: Missing DisplayID Product Identification Data Block.

  DisplayID: Missing DisplayID Display Parameters Data Block.

  DisplayID: Missing DisplayID Display Interface Features Data Block.

  DisplayID: DisplayID expects at least one preferred timing.

EDID conformity: FAIL

MUC · 08-26-2026, 07:47 PM

(08-26-2026 03:56 AM)foo Wrote: here are the results

These data essentially show the same as what I see in the EDID I have for this monitor model.
... In the third block (DisplayID), the monitor advertises:

Quote:DTD: 3840x2160 240.016468 Hz 16:9 583.000 kHz 2332.000000 MHz (aspect 16:9, no 3D stereo)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 5 Vback 261 Vpol N
DTD: 3840x2160 143.987684 Hz 16:9 333.188 kHz 1332.750000 MHz (aspect 16:9, no 3D stereo)
Hfront 48 Hsync 32 Hback 80 Hpol P
Vfront 3 Vsync 5 Vback 146 Vpol N

Do I understand correctly that the 240 Hz mode is not available as option under Windows? Are 97 Hz and 144 Hz unavailable as well? If so, there must be a specific reason why the AMD driver is hiding these modes, given that the monitor is advertising them correctly.

You aren't using a docking station or anything similar? Is the graphics card connected directly to the monitor using a high-quality, straight DisplayPort 1.4a HBR3 cable, ideally VESA-certified?

foo · (Last edited: 08-27-2026, 02:37 AM by foo)

(08-26-2026 07:47 PM)MUC Wrote: Do I understand correctly that the 240 Hz mode is not available as option under Windows? Are 97 Hz and 144 Hz unavailable as well? If so, there must be a specific reason why the AMD driver is hiding these modes, given that the monitor is advertising them correctly.

ROG themself hiding the high refresh rate from each updates the firmwares gets patched so nobody's able to overclocks the gaming monitors they've manufactured. I wish I could've EDID test when my monitor was still on manufacture firmware. Most likely I could've run natively without DSC and be able to use FHD:480/UHD:240 modes.

Quote:You aren't using a docking station or anything similar? Is the graphics card connected directly to the monitor using a high-quality, straight DisplayPort 1.4a HBR3 cable, ideally VESA-certified?

Monitor itself has a built-in USB hub 3.2 Gen 1 Type-A. Mostly the monitor goes to blackscreen when forcing to run 4k@240hz which I have to plug 2nd monitor and run restart64 from CRU to bring monitor back to normal cause ctrl + win + shift + B doesn't work from time to time. Always directly connected to monitor. Ugreen considered as VESA cert when cable it self can do 16k@30hz that I recently bought. Then mainly use their 1.4a cable from ROG monitor

MUC · (Last edited: 08-27-2026, 07:59 PM by MUC)

(08-27-2026 02:10 AM)foo Wrote: I wish I could've EDID test when my monitor was still on manufacture firmware. Most likely I could've run natively without DSC and be able to use FHD:480/UHD:240 modes.

This isn't exactly hot off the press, but to verify connectivity:
https://tftcentral.co.uk/reviews/asus-ro...-xg32ucwmg

1 x DisplayPort 1.4a HBR3
2 x HDMI 2.1 FRL6
1 x USB Type-C w/ DP1.4a HBR3

Assuming the goal is to fully utilize the monitor's capabilities, specifically the RGB color model and 10-bit color depth:

4K @ 240 Hz RGB 10-bit CVT-RB = 174% FRL6 = 270% HBR3
1080p @ 480 Hz RGB 10-bit CVT-RB = 103% FRL6 = 160% HBR3

--> DSC is mandatory.

However, if the AMD driver doesn't even offer 4K @ 240 Hz as an option – meaning it isn't available in the Windows display settings either, even though the monitor's EDID includes it – then you can't lower the color model or color depth to avoid DSC. The only way to do that would be by using YCbCr 4:2:0, which I would strongly advise against. RGB DSC is far superior to YCbCr 4:2:0.

Please specify whether only 4K @ 120 Hz is available to you.

Is 4K @ 97 Hz also unavailable?
Is 4K @ 144 Hz also unavailable?

We can take a look at what the monitor sends as EDID when you activate the "Frame Rate Boost" option in the monitor’s OSD (Gaming > Frame Rate Boost > ON). Please do that and run edid-test.exe again.

I have hardware available to externally advertise an HDMI EDID to a video source. I have extended the existing DisplayPort EDID with HDMI parameters, and with my Nvidia GeForce RTX 5060 Ti, I get the result shown in the attachment.

You could also try using HDMI. The cable needs to be a good (certified) Ultra High Speed HDMI cable.

I don't think your issue lies with the monitor itself. In my opinion, the EDID you posted is good and functional.

Over DisplayPort, DSC capability is signaled via DisplayPort Configuration Data (DPCD) rather than EDID.

DSC must be enabled in the monitor's OSD:
System Setup > DisplayPort Stream > DisplayPort 1.4
System Setup > DSC Support > ON !

foo · (Last edited: 08-28-2026, 01:08 PM by foo)

(08-27-2026 07:49 PM)MUC Wrote: This isn't exactly hot off the press, but to verify connectivity:
https://tftcentral.co.uk/reviews/asus-ro...-xg32ucwmg

1 x DisplayPort 1.4a HBR3
2 x HDMI 2.1 FRL6
1 x USB Type-C w/ DP1.4a HBR3

only ported to dp 14.a

Quote:Assuming the goal is to fully utilize the monitor's capabilities, specifically the RGB color model and 10-bit color depth:

This use to be my setting after I swapping to 8bit YCbCr 4:4:4 DSC off to try uncompressed native display

Quote:

4K @ 240 Hz RGB 10-bit CVT-RB = 174% FRL6 = 270% HBR3

1080p @ 480 Hz RGB 10-bit CVT-RB = 103% FRL6 = 160% HBR3

--> DSC is mandatory.

I have that monitor settings back in MCM101 which 4k 240hz, works well with VRR HDR True Black 400 on

Quote:However, if the AMD driver doesn't even offer 4K @ 240 Hz as an option – meaning it isn't available in the Windows display settings either, even though the monitor's EDID includes it – then you can't lower the color model or color depth to avoid DSC. The only way to do that would be by using YCbCr 4:2:0, which I would strongly advise against. RGB DSC is far superior to YCbCr 4:2:0.

Do I need to keep it at 10bit and try YCbCr 4:2:0 or stay at 4:4:4

Quote:Please specify whether only 4K @ 120 Hz is available to you.

Is 4K @ 97 Hz also unavailable?

Is 4K @ 144 Hz also unavailable?

30/120hz is only refresh rate that are able to work, can force 121hz recently w/wo DSC

144/240hz on 4k turns the monitor to blackscreen on DSC

Quote:We can take a look at what the monitor sends as EDID when you activate the "Frame Rate Boost" option in the monitor’s OSD (Gaming > Frame Rate Boost > ON). Please do that and run edid-test.exe again.

Frame Rate Boost is FHD/480hz which make the monitor blackscreen

I feel like it's the Frame Rate Boost shortcut button's fault (left monitor button) why it keeps blackscreening when I switch to 144/FHD/UHD 240/UHD 480/FHD because I accidentally press it on my monitor all the time.

Quote:I have hardware available to externally advertise an HDMI EDID to a video source. I have extended the existing DisplayPort EDID with HDMI parameters, and with my Nvidia GeForce RTX 5060 Ti, I get the result shown in the attachment.

You could also try using HDMI. The cable needs to be a good (certified) Ultra High Speed HDMI cable.

I have HDMI UHS that can run on 8k 60hz but I will try again if they still don't work at higher refresh rate. Then run edid test normally on 120hz

Quote:I don't think your issue lies with the monitor itself. In my opinion, the EDID you posted is good and functional.

Over DisplayPort, DSC capability is signaled via DisplayPort Configuration Data (DPCD) rather than EDID.

DSC must be enabled in the monitor's OSD:
System Setup > DisplayPort Stream > DisplayPort 1.4
System Setup > DSC Support > ON !

Based on my own experience, the firmware of the monitor is the issue itself because they used to work on 4k 240hz back when I first bought it. Then I accidentally presses Frame Rate Boost button most of time cause it flickers in-game then became fully blackscreen which means that the bandwidth projected from my monitor is being compressed to only work on 120hz even if I switched to all the cert display cables that I have.

plus note: I just recently switch to CachyOS and it's Wayland default. It's blackscreen right after.

This how it feels like you can't change on a higher refresh rate anymore after installing latest firmware. Which I need to go back to MCM101 to see if it really if firmware is the one causing the high refresh rate handshake issue.

MUC · 08-28-2026, 07:24 PM

(08-28-2026 07:38 AM)foo Wrote: Based on my own experience, the firmware of the monitor is the issue itself

That is certainly possible. My previous comment was based on the conclusion that the EDID is fine. The issue isn't with the EDID.

RGB and YCbCr 4:4:4 have the same bandwidth requirements.

For gaming, I would stick with RGB or YCbCr 4:4:4 rather than switching to YCbCr 4:2:0. While chroma subsampling does halve the required bandwidth, it can lead to visual drawbacks in PC games that feature pixel-perfect text rendering. However, it is certainly an option if nothing else works.

Okay, if you manage to get hold of the MCM101 firmware and flash it, we’ll see what happens. Personally, I have no direct experience with AMD graphics cards or Linux based operating systems.