Re: [PATCH v2] pci: Add broken-GPE quirk for Lenovo Legion 16APH8 and 16AHP9 Nvidia GPUs

[sashiko-bot@kernel.org]

> On the Lenovo Legion Slim 5 16APH8 and 16AHP9, the firmware appears to enjoy
> firing a GPE on the parent PCIe port of the nvidia GPU very shortly after the
> GPU enters D3Cold. This means that every time the GPU is runtime suspended,
> ACPI firmware immediately wakes up its parent PCIe port, which then wakes up
> the GPU. Once it falls asleep again, the cycle repeats.
> 
> See: https://github.com/NVIDIA/open-gpu-kernel-modules/issues/905
> 
> Note, this bug doesn't require Nvidia's driver. It happens on nouveau and
> nova as well, and it even seems possible for this to happen without any
> driver loaded.
> 
> This seems to simply be a bug. Luckily, there is nothing that we actually
> need ACPI wakeup events for on the GPU. Events such as display connector
> hotplug events in D3Cold come through as ACPI_VIDEO events which aren't
> affected by this quirk.
> 
> Reported-by: Ryan Brue <ryanbrue.dev@gmail.com>
> Co-authored-by: Ryan Brue <ryanbrue.dev@gmail.com>
> Signed-off-by: Lyude Paul <lyude@redhat.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260821200607.621341-1-lyude@redhat.com?part=1