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

[Kai-Heng Feng]

Hi Hans,

On Fri, Nov 10, 2023 at 2:19 PM Hans de Goede <hdegoede at redhat.com> wrote:
>
> Hi All,
>
> On 11/10/23 07:09, Kai-Heng Feng wrote:
> > Hi Owen,
> >
> > On Fri, Nov 10, 2023 at 5:55 AM Owen T. Heisler <writer at owenh.net> 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?
>
> Owen, as Kai-Heng said thank you for reporting this.
>
> >> ## 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 ?
>
> 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 at canonical.com>


>
> Regards,
>
> Hans
>