NACK: [SRU][linux-firmware][Focal] system hangs when HDMI external monitor involved on AMD Yellow Carp platforms

[You-Sheng Yang]

To include [PULL] in the subject.

On Thu, Apr 28, 2022 at 12:00 AM You-Sheng Yang
<vicamo.yang at canonical.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/1970293
>
> [Impact]
>
> Some AMD Yellow Carp platforms might hang on external monitor being connected
> to/disconnected from built-in HDMI port.
>
> [Fix]
>
> This can be fixed by DMCUB firmware update in upstream commit fcf9d8ca2d5e
> ("amdgpu: update yellow carp DMCUB firmware").
>
> [Test Case]
>
> Connect an external monitor via HDMI to the built-in HDMI port.
>
> [Where problems could occur]
>
> Firmware update, little knowledge to what was actually fixed.
>
> [Other Info]
>
> This affects AMD Yellow Carp platforms, so Focal (for oem-5.14) and Jammy
> are nominated. Kinetic is not branched yet, but it should receive this fix
> automatically as it's already in upstream main branch.
>
> ----------------------------------------------------------------
>
> The following changes since commit cb43e2f3157180db33785a2cf23eaad9071f5c3c:
>
>   UBUNTU: Ubuntu-1.187.30 (2022-04-11 16:26:44 +0200)
>
> are available in the Git repository at:
>
>   https://git.launchpad.net/~vicamo/ubuntu/+source/linux-firmware bug-1970293/amdgpu-update-dmcub-fw-for-hdmi-hang/focal
>
> for you to fetch changes up to 74fe4606138eb3d1860c3c385acb47b4e1126930:
>
>   amdgpu: update yellow carp DMCUB firmware (2022-04-26 16:40:03 +0800)
>
> ----------------------------------------------------------------
> Alex Deucher (1):
>       amdgpu: update yellow carp DMCUB firmware
>
>  amdgpu/yellow_carp_dmcub.bin | Bin 225936 -> 230672 bytes
>  1 file changed, 0 insertions(+), 0 deletions(-)
>
> diff --git a/amdgpu/yellow_carp_dmcub.bin b/amdgpu/yellow_carp_dmcub.bin
> index abc43763..b73a38bf 100644
> Binary files a/amdgpu/yellow_carp_dmcub.bin and b/amdgpu/yellow_carp_dmcub.bin differ
>
> --
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-- 
Regards,
You-Sheng Yang