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Bug#968181: linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B

Started byDiederik de Haas <didi.debian@cknow.org>
First post2020-12-17 14:00 +0100
Last post2020-12-17 16:20 +0100
Articles 3 — 2 participants

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  Bug#968181: linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B Diederik de Haas <didi.debian@cknow.org> - 2020-12-17 14:00 +0100
    Bug#968181: linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B Lucas Nussbaum <lucas@debian.org> - 2020-12-17 15:40 +0100
      Bug#968181: linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B Diederik de Haas <didi.debian@cknow.org> - 2020-12-17 16:20 +0100

#68908 — Bug#968181: linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B

FromDiederik de Haas <didi.debian@cknow.org>
Date2020-12-17 14:00 +0100
SubjectBug#968181: linux-image-5.7.0-2-arm64: DRM unavailable on Rapsberry Pi 4B
Message-ID<Bn12W-2Sl-1@gated-at.bofh.it>

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On Wed, 4 Nov 2020 09:09:55 +0100 Lucas Nussbaum <lucas@debian.org> wrote:
> Outside of the kernel, there's nothing else needed.

What I haven't seen mentioned thus far and is AFAIUI essential, is the 
following line in /boot[/firmware/]/config.txt:

dtoverlay=vc4-kms-v3d

Note that it is not the -fkms- variant and this is not a typo on my end.

Cheers,
  Diederik

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#68909

FromLucas Nussbaum <lucas@debian.org>
Date2020-12-17 15:40 +0100
Message-ID<Bn2BH-3Th-7@gated-at.bofh.it>
In reply to#68908
On 17/12/20 at 13:49 +0100, Diederik de Haas wrote:
> On Wed, 4 Nov 2020 09:09:55 +0100 Lucas Nussbaum <lucas@debian.org> wrote:
> > Outside of the kernel, there's nothing else needed.
> 
> What I haven't seen mentioned thus far and is AFAIUI essential, is the 
> following line in /boot[/firmware/]/config.txt:
> 
> dtoverlay=vc4-kms-v3d
> 
> Note that it is not the -fkms- variant and this is not a typo on my end.

Isn't that for the Raspberry Pi Foundation kernel, not the vanilla one?

Lucas

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#68910

FromDiederik de Haas <didi.debian@cknow.org>
Date2020-12-17 16:20 +0100
Message-ID<Bn3ep-4ln-1@gated-at.bofh.it>
In reply to#68909

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On donderdag 17 december 2020 15:28:45 CET Lucas Nussbaum wrote:
> On 17/12/20 at 13:49 +0100, Diederik de Haas wrote:
> > On Wed, 4 Nov 2020 09:09:55 +0100 Lucas Nussbaum <lucas@debian.org> wrote:
> > > Outside of the kernel, there's nothing else needed.
> > 
> > What I haven't seen mentioned thus far and is AFAIUI essential, is the
> > following line in /boot[/firmware/]/config.txt:
> > 
> > dtoverlay=vc4-kms-v3d
> > 
> > Note that it is not the -fkms- variant and this is not a typo on my end.
> 
> Isn't that for the Raspberry Pi Foundation kernel, not the vanilla one?

IIRC, it was 'pelwell' that said it, so it's certainly for the RPF kernel.
I know there are differences between the RPF kernel and the vanilla one, but I 
didn't know (and would be surprised) if that would entail not using that 
overlay. I can (ofc) be wrong.
I guess it is worth verifying.

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