Re: [REGRESSION]: acpi/nouveau: Hardware unavailable upon resume or suspend fails

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Hi everyone,

On 11/10/23 06:52, Kai-Heng Feng wrote:
On Fri, Nov 10, 2023 at 2:19 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
On 11/10/23 07:09, Kai-Heng Feng wrote:
On Fri, Nov 10, 2023 at 5:55 AM Owen T. Heisler <writer@xxxxxxxxx> wrote:
#regzbot introduced: 89c290ea758911e660878e26270e084d862c03b0
#regzbot link: https://gitlab.freedesktop.org/drm/nouveau/-/issues/273
#regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=218124

Thanks for the bug report. Do you prefer to continue the discussion
here, on gitlab or on bugzilla?

Kai-Heng, you're welcome and thank you too. By email is fine with me.

Owen, as Kai-Heng said thank you for reporting this.

Hans, you're welcome, and thanks for your help too.

## Reproducing

1. Boot system to framebuffer console.
2. Run `systemctl suspend`. If undocked without secondary display,
suspend fails. If docked with secondary display, suspend succeeds.
3. Resume from suspend if applicable.
4. System is now in a broken state.

So I guess we need to put those devices to ACPI D3 for suspend. Let's
discuss this on your preferred platform.

Ok, so I was already sort of afraid we might see something like this
happening because of:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=89c290ea758911e660878e26270e084d862c03b0

As I mentioned during the review of that, it might be better to
not touch the video-card ACPI power-state at all and instead
only do acpi_device_fix_up_power() on the child devices.

Or the child devices need to be put to D3 during suspend.

Owen, attached are 2 patches which implement only
calling acpi_device_fix_up_power() on the child devices,
can you build a v6.6 kernel with these 2 patches added
on top please and see if that fixes things ?

Yes, with those patches v6.6 suspend works normally. That's great, thanks!

I tested with v6.6 with the 2 patches at <https://lore.kernel.org/regressions/a592ce0c-64f0-477d-80fa-8f5a52ba29ea@xxxxxxxxxx/> using <https://gitlab.freedesktop.org/drm/nouveau/uploads/788d7faf22ba2884dcc09d7be931e813/v6.6-config1>. I tested both docked and un-docked, just in case.

Tested-by: Owen T. Heisler <writer@xxxxxxxxx>

Kai-Heng can you test that the issue on the HP ZBook Fury 16 G10
is still resolved after applying these patches ?

Yes. Thanks for the patch.

If this patch also fixes Owen's issue, then
Tested-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx

Please let me know if anything else is needed from me.

Many thanks,
Owen



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