Re: [REGRESSION] Black screen on HDMI power-cycle after commit 3471b9a31ce3 (7900XTX + LG C3)

[Mikhail Gavrilov]

On Tue, Dec 9, 2025 at 1:57 AM Aurabindo Pillai
<aurabindo.pillai@xxxxxxx> wrote:
>
> It is available on amd-staging-drm-next. I'm also attaching here. Let me
> know if this helps.

Hi Aurabindo,

I applied the patch you provided ("drm/amd/display: Improve HDMI info
retrieval"), but unfortunately, it does not resolve the issue.

The behavior remains exactly the same: the HDMI signal is still lost
after power-cycling the TV.

I have attached a new dmesg log (captured with drm.debug=0x116) with
your patch applied. Hopefully, it shows why the fix didn't work.

-- 
Best Regards,
Mike Gavrilov.

Attachment: dmesg-6.18.0-a110f942672c-with-fix.zip
Description: Zip archive