Re: [Regression 4.15-rc2] New messages `tpm tpm0: A TPM error (2314) occurred continue selftest`

[Paul Menzel]

Dear Mario,


On 12/15/17 16:24, Mario.Limonciello@xxxxxxxx wrote:
> > -----Original Message-----
> > From: Paul Menzel [mailto:pmenzel@xxxxxxxxxxxxx]
> > Sent: Friday, December 15, 2017 9:11 AM
> > To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>; Alexander Steffen
> > <Alexander.Steffen@xxxxxxxxxxxx>; Jason Gunthorpe <jgg@xxxxxxxx>
> > Cc: linux-integrity@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> > rafael.j.wysocki@xxxxxxxxx; len.brown@xxxxxxxxx
> > Subject: Re: [Regression 4.15-rc2] New messages `tpm tpm0: A TPM error (2314)
> > occurred continue selftest`
> >
> > Dear Mario,
> >
> >
> > On 12/15/17 15:39, Mario.Limonciello@xxxxxxxx wrote:
> > > > -----Original Message-----
> > > > From: Paul Menzel [mailto:pmenzel@xxxxxxxxxxxxx]
> > > > Sent: Friday, December 15, 2017 5:54 AM
> > > > To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>; Alexander Steffen
> > > > <Alexander.Steffen@xxxxxxxxxxxx>; Jason Gunthorpe <jgg@xxxxxxxx>
> > > > Cc: linux-integrity@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Rafael J.
> > > > Wysocki <rafael.j.wysocki@xxxxxxxxx>; Len Brown <len.brown@xxxxxxxxx>
> > > > Subject: Re: [Regression 4.15-rc2] New messages `tpm tpm0: A TPM error (2314)
> > > > occurred continue selftest`

[â]

> > > > Mario, thank you for your quick reaction.
> > > >
> > > > [â]
> > > >
> > > > 1.  Can you reproduce this issue too?
> > >
> > > I haven't seen this, but if this is a regression I also have not run anything
> > > later than 4.15-rc1 right now.
> >
> > Well as far as I understood it, itâs not a regression, and there is now
> > just better error reporting. Did you ever get the TPM to work?
>
> I don't personally use a TPM with Linux on the XPS 9360, but TPM was
> tested by our partners when the XPS 9360 was enabled for Ubuntu.

Itâd be great to know how it was tested, as currently it doesnât work 
here. I included the output in my reply to Alexander just now.

> > > > 2.  How do I find out, what TPM firmware version is installed?
> > >
> > > fwupd will tell you.  Documentation (and code) here:
> > > https://github.com/hughsie/fwupd/tree/master/plugins/dell
> >
> > Unfortuntately itâs not listed with fwupd 0.7.0-0ubuntu4.3 in Ubuntu
> > 16.04.3 LTS installed by Dell.
>
> If you're unwilling to upgrade to a newer userspace, you can write
> a simple application that can use the new dell-smbios from 4.15 interface to look this up.

Is the newer userspace officially supported by Dell. Because I really 
like to avoid the time-waste with the Dell support again, if I do not 
use their installed OS. Sometimes the Dell support even claims the 
installed Ubuntu flavor does not get any support by Dell.

> Most of the work is already done (see
> https://github.com/torvalds/linux/blob/master/tools/wmi/dell-smbios-example.c#L179)
>
> You'll just need to add some parsing around the output (see fwupd code) to
> tell the version.  If you do this, please feel free to submit it platform-x86, it may be useful
> for someone else in this sample application too.
>
> Given you don't have a newer fwupd on your system you won't be able to "easily" flash
> the newer TPM firmware.

I assume you donât make these decisions, but please relay to your 
superiors that working functionality in the recommended/shipped OS is 
really what customers expect buying a device with GNU/Linux support. In 
my opinion, Dell and Canonical really need to step up there.


Kind regards,

Paul

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