Other NXP Products中的主题 Re: Issue Running ddcutil on iMX93

Issue Running ddcutil on iMX93

rahul_raja — Fri, 03 Oct 2025 08:49:40 GMT

I tried adding ddcutil to iMX93 image and ran the command, but it reports “No displays found.”
root@osm-imx93:~# ddcutil detect
No displays found.
Could you please advise on how to resolve this issue? I have confirmed that DDC/CI is enabled on the monitor.
Thank you for your support.

Re: Issue Running ddcutil on iMX93

Manuel_Salas — Mon, 06 Oct 2025 18:03:19 GMT

Hello @rahul_raja

I hope you are doing very well.

Please refer to this web page, where is explained how to add ddcutil in de udev rules.

Best regards,

Salas.

Re: Issue Running ddcutil on iMX93

rahul_raja — Tue, 07 Oct 2025 05:01:39 GMT

Hi Salas,
Thanks for the link. I’ve reviewed the page and will proceed to add the udev rules for ddcutil as described.

Best regards,
Rahul R

Re: Issue Running ddcutil on iMX93

rahul_raja — Mon, 13 Oct 2025 10:36:13 GMT

Hi Salas,

I’m still encountering the same error even after adding the udev rules for ddcutil.

Best regards,
Rahul R

Re: Issue Running ddcutil on iMX93

Manuel_Salas — Mon, 13 Oct 2025 21:08:43 GMT

Hello @rahul_raja

I was checking the ADV7535.c Driver and it does not expose the DDC I²C bus to the user space.

You must modify the driver yourself to get it working.

Best regards,

Salas.

Re: Issue Running ddcutil on iMX93

rahul_raja — Tue, 14 Oct 2025 04:31:38 GMT

HI Salas,
Could you please share the modifications or the updated ADV7535.c file for my reference?

Best Regards,
Rahul R