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Date:   Thu, 13 Apr 2017 09:19:28 +0200
From:   Paul Menzel <>
To:     Robert Moore <>
Cc:     Jarkko Sakkinen <>,
        "Maciej S. Szmigiero" <>,, Arthur Heymans <>,,,
        "Zheng, Lv" <>,
        "Wysocki, Rafael J" <>,
Subject: RE: [Regression Linux 4.11] TPM module not loaded anymore

Dear Robert,

Thank you for your reply.

On 2017-04-12 23:49, Moore, Robert wrote:

>> On 2017-04-12 17:54, Moore, Robert wrote:
>> > And probably the dmesg if error messages appear in there.
>> Linux doesn’t log any messages, as the `tpm` module doesn’t load. 
>> Please
>> find the output of `sudo acpidump` attached.
>> […]
> Do you have any idea what control method(s) are executing? The DSDT
> and SSDT in the acpidump load fine here, and all predefined control
> methods in these tables execute OK.

Sorry, I don’t know what’s done.

> We need to root-cause this problem, as a simple revert will break the
> customers that the fix was intended for in the first place.

I know, but I have no idea how to root-cause this. If nothing can be 
found, a revert is required by Linux’ no-regression-policy.

Kind regards,


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