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From:   "Rafael J. Wysocki" <rjw@rjwysocki.net>
To:     Chris Murphy <chris@colorremedies.com>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Linux PM <linux-pm@vger.kernel.org>
Subject: Re: 5.7 sleep/wake regression
Date:   Tue, 12 May 2020 14:57:35 +0200
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On Monday, May 11, 2020 7:37:04 PM CEST Chris Murphy wrote:
> On Mon, May 11, 2020 at 5:15 AM Rafael J. Wysocki <rafael@kernel.org> wrote:
> >
> > On Mon, May 11, 2020 at 6:22 AM Chris Murphy <chris@colorremedies.com> wrote:
> > >
> > > Got an older Macbook Pro that does suspend to RAM and wake OK with
> > > 5.6, but starting with git 47acac8cae28, it will not wake up. Instead
> > > it has a black screen, gets hot, fans go to high, and it turns into a
> > > hair dryer. So it's a regression.
> >
> > There is a known issue addressed by this patch:
> >
> > https://patchwork.kernel.org/patch/11538065/
> >
> > so can you please try it?
> 
> Patch applied, but the problem remains.
> 
> CPU is i7-2820QM and dmesg for the working sleep+wake case:
> https://paste.centos.org/view/ea5b913d
> 
> In the failed wake case, I note the following: the fade-in/out sleep
> indicator light on the laptop is pulsing, suggests it did actually
> enter sleep OK. When waking by spacebar press, this sleep indicator
> light stops pulsing, the backlight does not come on, the laptop does
> not respond to either ssh or ping. Following  a power reset and
> reboot, the journal's last line is
> 
> [   61.678347] fmac.local kernel: PM: suspend entry (deep)
> 
> Let me know if I should resume bisect.

Please first try to revert commit

6d232b29cfce ("ACPICA: Dispatcher: always generate buffer
objects for ASL create_field() operator")

and see if that helps.

I have no other ideas ATM, so please continue bisecting if it doesn't help.

Cheers!