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Message-ID: <CAFtaAxFazzhS++yFE7ByUxpMV=h-sC1DCPdg88OApPCW+9NMSQ@mail.gmail.com>
Date:   Mon, 17 Sep 2018 10:29:50 +0300
From:   Peter Anemone <peter.anemone@...il.com>
To:     mika.westerberg@...ux.intel.com
Cc:     rjw@...ysocki.net, Len Brown <lenb@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION][BISECTED] Boot stall related to drivers/pci/hotplug/acpiphp_glue.c

I think I can't get a dmesg as I can't boot the kernel. My screen
stays completely black when I try to boot.
-Peter

On Mon, 17 Sep 2018 at 09:13, Mika Westerberg
<mika.westerberg@...ux.intel.com> wrote:
>
> On Mon, Sep 17, 2018 at 08:58:50AM +0300, Peter Anemone wrote:
> > Dear kernel developers
> > I reported a bug at Bugzilla, but Greg Kroah-Hartman pointed me in
> > mailing lists. Here's my bug report:
> >
> > Linux has been unbootable for me from 4.18 upwards. Even the fallback
> > image does not boot. This has not been fixed yet in 4.19-rc3. acpi=off
> > kernel parameter lets me boot 4.18.6 and 4.19-rc3.
> >
> > I used git bisect to track down the first bad commit:
> > 84c8b58ed3addf17d3beb2e5037b001ffa65c5ef
> >
> > The commit is about:
> > "ACPI / hotplug / PCI: Don't scan bridges managed by native hotplug"
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=84c8b58ed3addf17d3beb2e5037b001ffa65c5ef
> >
> > Linux 4.17 booted fine. Reverting commit
> > 84c8b58ed3addf17d3beb2e5037b001ffa65c5ef makes 4.18 and 4.19-rc3
> > bootable again (without the acpi=off parameter).
> >
> > Information about my system:
> > Model: HP 6730b laptop
> > CPU: Intel Core 2 Duo P8600
> > Boot manager: systemd-boot (UEFI)
> > More information of my system as attachments on the bug report at Bugzilla.
> >
> > Link to the bug report:
> > https://bugzilla.kernel.org/show_bug.cgi?id=201127
>
> Thanks for the report. Since there is bugzilla about the issue already,
> let's continue investigation there.
>
> Can you also attach full dmesg of the failure (if possible) to the bug?

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