Re: [resend] [regression] amdgpu carrizo: no display signal after modeset

From: Dianne Skoll

Date: Mon Jun 22 2026 - 15:44:28 EST


On Mon, 22 Jun 2026 20:46:44 +0300
Jaak Ristioja <jaak@xxxxxxxxxxx> wrote:

> Reverting commit fee50077656 ("drm/amd/display: Bump the HDMI clock to
> 340MHz") on top of v7.1.1 appears to resolve the issue, as I am now able
> to get a picture.

Unfortunately, reverting that commit will *break* it for me with my Dasung
E-Ink monitor. :(

If it's not possible to detect what the maximum HDMI clock should be, perhaps
a module parameter specifying the HDMI version could be implemented? Or
a parameter to specify the maximum HDMI clock directly?

Regards,

Dianne.