NACK: [SRU] [Unstable/OEM-5.14] [PATCH 0/1] Reinstate ACPI S5 for reboot

[Kai-Heng Feng]

On Tue, Dec 14, 2021 at 11:12 PM Timo Aaltonen <tjaalton at ubuntu.com> wrote:
>
> On 16.11.2021 8.18, Kai-Heng Feng wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1951055
> >
> > [Impact]
> > On some systems, Intel WiFi device may stop working after reboot.
> >
> > [Fix]
> > Use ACPI S5 for reboot.
> >
> > [Test]
> > 2000 times of reboot stress, and Intel WiFi continues work on affected
> > system.
> >
> > [Where problems could occur]
> > There was a bug introduced by this patch, but the user didn't want to
> > find the root cause. Since we have more control on Ubuntu kernel, we'll
> > fix the root cause properly this time.
> >
> > Kai-Heng Feng (1):
> >    UBUNTU: SAUCE: PM: ACPI: reboot: Reinstate S5 for reboot
> >
> >   kernel/reboot.c | 2 ++
> >   1 file changed, 2 insertions(+)
> >
>
> I looked at the private bug, and looks like there's a proper fix in the
> works?

Yes, there's another WIP fix.
However, This is still needed for other hardwares. Will resend it with
another cover letter.

Kai-Heng

>
>
> --
> t