[Bug 106291] drm.edid_firmware override does not work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106291

--- Comment #20 from Wolfgang Haupt <haupt.wolfgang at gmail.com> ---
(In reply to Jani Nikula from comment #19)
> It seems to me the drm.edid_firmware option (that this bug was originally
> about) works as expected.

Yes we can agree on that one.

> Obviously everything about DP link fail when you don't have a cable
> connected. I'm not sure what your expectation is. That can't work.

I want to force display on digital output and hardcode the edid.
May I ask about the "why" it can't work, prior to kernel 4.15 it was possible
to use:
"initrd=/edid.cpio drm_kms_helper.edid_firmware=DP-1:edid/edid.bin
video=DP-1:D"


> (In reply to Wolfgang Haupt from comment #9)
> > 2. Our GBM kodi implementation needs a valid connector and encoder in order
> > to setup rendering, otherwise the application is stopped, I want to
> > workaround this by hardcoding the edid.
> 
> I'm turning to this one, and wondering if that's reasonable behavior for
> your userspace.

We are working towards a better solution already, but it's a huge undertaking
and could easily take us another year.
As stated above, I was able to workaround this in older kernels.

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