linux-kernel - Re: Dell Inc. XPS 13 9343/0TM99H fails to boot v4.16-rc5

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Date:   Mon, 12 Mar 2018 23:07:51 +0100
From:   Dominik Brodowski <linux@...inikbrodowski.net>
To:     Darren Hart <dvhart@...radead.org>
Cc:     mario.limonciello@...l.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Dell Inc. XPS 13 9343/0TM99H fails to boot v4.16-rc5

On Mon, Mar 12, 2018 at 01:23:19PM -0700, Darren Hart wrote:
> On Mon, Mar 12, 2018 at 07:53:57PM +0100, Dominik Brodowski wrote:
> > Mario,
> > 
> > unfortunately, my Dell Inc. XPS 13 9343/0TM99H, BIOS A11 12/08/2016 fails to
> > boot v4.16-rc5. More exactly, I could bisect it down to commit 25d47027e10
> > ("platform/x86: dell-smbios: Link all dell-smbios-* modules together").
> > Usually, I have enabled
> > 
> > CONFIG_SENSORS_DELL_SMM=y
> > CONFIG_DELL_SMBIOS=y
> > CONFIG_DELL_SMBIOS_WMI=y
> > CONFIG_DELL_SMBIOS_SMM=y
> > CONFIG_DELL_LAPTOP=y
> > CONFIG_DELL_WMI=y
> > CONFIG_DELL_WMI_DESCRIPTOR=y
> > # CONFIG_DELL_WMI_AIO is not set
> > # CONFIG_DELL_WMI_LED is not set
> > # CONFIG_DELL_SMO8800 is not set
> > # CONFIG_DELL_RBTN is not set
> > # CONFIG_DELL_RBU is not set
> > 
> > For v4.16-rc5 to work, I need to manually disable DELL_SMBIOS_WMI:
> > 
> > -CONFIG_DELL_SMBIOS_WMI=y
> > +# CONFIG_DELL_SMBIOS_WMI is not set
> > 
> > Any ideas?
> 
> We're working on a dependency fix, but I think the problem you have here is
> likely to be ACPI_WMI=m instead of =y while you have DELL_SMBIOS=y
> 
> The fix won't allow that configuration. I'll include you in Cc of v2 of that
> fix which I'll send shortly.

On Mon, Mar 12, 2018 at 01:36:06PM -0700, Darren Hart wrote:
> Similarly to DCDBAS for DELL_SMBIOS_SMM, if DELL_SMBIOS_WMI is enabled,
> DELL_SMBIOS becomes dependent on ACPI_WMI. Update the depends lines to
> prevent a configuration where DELL_SMBIOS=y and either backend
> dependency =m. Update the comment accordingly.

I'm awfully sorry, but this patch doesn't solve the issue.
CONFIG_ACPI_WMI=y was/is set, but still enabling CONFIG_DELL_SMBIOS_WMI=y
causes a very-early crash of v4.16-rc5. In fact, so early that the normal
boot messages never show up on the screen...

Thanks,
	Dominik