Request for Help Creating a Working Custom EDID (1440p / 144 Hz / HDMI 2.1 / FreeSync

[joe1121]

I’m having an issue with my Gigabyte FO27Q3 (1440p). For some reason, the monitor doesn’t offer a 144 Hz option. I need 144 Hz available so I can generate an EDID.bin file to inject into my fuser.

I tried using CRU to create a custom EDID, but the fuser won’t accept it — the screen just goes blank. I need help creating a custom EDID that the fuser will actually work with.

I do have an EDID from another 1440p monitor that works, but the problem is that the other monitor is G‑Sync, so FreeSync doesn’t work when using that EDID.

If anyone can help me build a proper custom EDID for the fuser, I’d really appreciate it. It needs to support:

- HDMI 2.1
- 1440p
- 144 Hz
- FreeSync

I can share my current EDID files if needed.

[ToastyX]

Can you show which EDID works and which EDID doesn't work?

[joe1121]

(04-05-2026 01:19 PM)ToastyX Wrote:  Can you show which EDID works and which EDID doesn't work?

I have attached them. Thanks.


  not work.bin (Size: 256 bytes / Downloads: 3)
  Work.bin (Size: 256 bytes / Downloads: 4)

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Also, just to add: I don’t really care whether the fuser itself supports G‑Sync or FreeSync. What matters to me is that the monitor supports FreeSync, and I want the option to use that on my main display through AMD Adrenalin.

At the moment, when the fuser is connected, AMD Adrenalin reports that FreeSync is not supported. However, if I unplug the fuser and run the monitor directly using its EDID, FreeSync works perfectly on my main Gigabyte monitor. That behaviour is a bit confusing.

[ToastyX]

Both files are the same, and it's missing the extension block.

[MUC]

(04-05-2026 06:59 AM)joe1121 Wrote:  If anyone can help me build a proper custom EDID for the fuser, I’d really appreciate it.

The user manual for the Gigabyte AORUS FO27Q3 monitor indicates that 144 Hz is not a fixed mode for this monitor family. However, the EDID of its larger sibling FO32U2P shows the use of VESA's Coordinated Video Timing - Reduced Blanking (CVT-RB) for 2560 x 1440 @ 240 Hz.

Please try the HDMI EDID in the attachment. It should cover everything you need.

• HDMI 2.1 48 Gbps (no DSC, therefore max. 1440p @ 240 Hz 10-bit ~ 38 Gbps)
• DisplayID with 144 Hz CVT-RB as preferred timing
• FO27Q3's original FreeSync block
  

[joe1121]

(04-06-2026 12:56 PM)ToastyX Wrote:  Both files are the same, and it's missing the extension block.

Yeah my bad I should have double checked that sorry for wasting your time I'll check it again appreciate your response.

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(04-06-2026 10:41 PM)MUC Wrote:  

(04-05-2026 06:59 AM)joe1121 Wrote:  If anyone can help me build a proper custom EDID for the fuser, I’d really appreciate it.

The user manual for the Gigabyte AORUS FO27Q3 monitor indicates that 144 Hz is not a fixed mode for this monitor family. However, the EDID of its larger sibling FO32U2P shows the use of VESA's Coordinated Video Timing - Reduced Blanking (CVT-RB) for 2560 x 1440 @ 240 Hz.

Please try the HDMI EDID in the attachment. It should cover everything you need.

• HDMI 2.1 48 Gbps (no DSC, therefore max. 1440p @ 240 Hz 10-bit ~ 38 Gbps)
• DisplayID with 144 Hz CVT-RB as preferred timing
• FO27Q3's original FreeSync block
  

Interesting thank you really appreciate the assistance I'll give that a crack and see how I go thank you again for compiling the edid.

[joe1121]

(04-06-2026 12:56 PM)ToastyX Wrote:  Both files are the same, and it's missing the extension block.

  AORUS FO27Q3.bin (Size: 256 bytes / Downloads: 4)
  Samsung lc32g7xt.bin (Size: 256 bytes / Downloads: 3)

The Samsung monitor works correctly on both setups and is currently being used as my secondary monitor. However, the Aorus monitor does not work at all with the fuser device.

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(04-06-2026 10:41 PM)MUC Wrote:  

(04-05-2026 06:59 AM)joe1121 Wrote:  If anyone can help me build a proper custom EDID for the fuser, I’d really appreciate it.

The user manual for the Gigabyte AORUS FO27Q3 monitor indicates that 144 Hz is not a fixed mode for this monitor family. However, the EDID of its larger sibling FO32U2P shows the use of VESA's Coordinated Video Timing - Reduced Blanking (CVT-RB) for 2560 x 1440 @ 240 Hz.

Please try the HDMI EDID in the attachment. It should cover everything you need.

• HDMI 2.1 48 Gbps (no DSC, therefore max. 1440p @ 240 Hz 10-bit ~ 38 Gbps)
• DisplayID with 144 Hz CVT-RB as preferred timing
• FO27Q3's original FreeSync block
  

I’m able to import the file into CRU; however, I’m still unable to inject it into the fuser (DICHEN 6th Gen Fuser with HDMI interface).

[ToastyX]

(Yesterday 08:38 AM)joe1121 Wrote:  The Samsung monitor works correctly on both setups and is currently being used as my secondary monitor. However, the Aorus monitor does not work at all with the fuser device.

What are you using to export the EDIDs? The files are missing an extension block. The issue is likely the fuser can only handle one extension block while the Aorus has two.

[MUC]

(Yesterday 08:38 AM)joe1121 Wrote:  I’m still unable to inject it into the fuser (DICHEN 6th Gen Fuser with HDMI interface).

You mentioned HDMI 2.1 above. That's why I generated a 512-byte EDID.

However, as I understand it, the DICHEN 6 Gen Fuser is an HDMI 2.0 device. This means it only processes the TMDS protocol and therefore likely only needs a 256-byte EDID without a DisplayID.

1440p @ 144 Hz is not possible with CVT-RB over HDMI TMDS. The Samsung EDID likely works because the pixel clock is below 600 MHz. Did you choose this video timing yourself, or is this the original data from the Samsung monitor when "HDMI: 144 Hz" is selected under "Refresh Rate" in the On Screen Display menu?

Anyway. Attached you'll find another file. It differs from the one above in that the DisplayID block has been removed and the Samsung video timing has been incorporated into the base block. The HDMI 2.1 FRL capability has also been removed. Everything else is still Gigabyte AORUS FO27Q3, including FreeSync (capped at 144 Hz).

1440p @ 144 Hz with 580 MHz pixel clock:
Front porch: 8 / 3
Sync width: 64 / 5
Back porch: 88 / 33
Sync polarity: + / -

580 MHz TMDS is 97% of HDMI 2.0 which means HDR will only be 8-bit.