linux-kernel - Re: amdgpu: suspend-to-idle on a 4350G desktop

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Date:   Sun, 22 Jan 2023 20:31:43 -0600
From:   "Limonciello, Mario" <mario.limonciello@....com>
To:     Rafael Ávila de Espíndola <rafael@...indo.la>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: amdgpu: suspend-to-idle on a 4350G desktop

On 1/21/2023 10:37, Rafael Ávila de Espíndola wrote:
> Hi,
> 
> I have a desktop that doubles as a NAS, and would like to suspend it
> when not in use. It works, but when it comes back it is using about 7W
> more than before going to sleep.
> 
> It looks like a6ed2035878e5ad2e43ed175d8812ac9399d6c40 is the
> culprit. The system doesn't even support S3:
> 
> % cat /sys/power/mem_sleep
> [s2idle]
> 
> And looks like the vendor decided that they should not define
> ACPI_FADT_LOW_POWER_S0. The MB is a Gigabyte B550I AORUS PRO AX with
> bios version F16e.
> 
> Which systems had crashes when ACPI_FADT_LOW_POWER_S0 was not defined?
> Would it be possible to limit the check only to those systems or at
> least only to systems that have S3?
> 
> I can build the amdgpu module without that check and see if the problem
> goes away if that would help.
> 
> Thanks,
> Rafael

Rafael,

Can you please open a bug report here
https://gitlab.freedesktop.org/drm/amd/-/issues

And attach the log from:
https://gitlab.freedesktop.org/drm/amd/-/blob/master/scripts/amd_s2idle.py

Thanks,