linux-kernel - Re: [tpmdd-devel] [BUG, bisect, PATCH 04/10] tpm: move the PPI attributes to character device directory.

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Message-ID: <20151105181755.GA2036@newt.localdomain>
Date:	Thu, 5 Nov 2015 10:17:55 -0800
From:	Jeremiah Mahler <jmmahler@...il.com>
To:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	peterhuewe@....de, gregkh@...uxfoundation.org,
	jgunthorpe@...idianresearch.com, dhowells@...hat.com,
	artem.bityutskiy@...ux.intel.com,
	Marcel Selhorst <tpmdd@...horst.net>
Subject: Re: [tpmdd-devel] [BUG, bisect, PATCH 04/10] tpm: move the PPI
 attributes to character device directory.

Jarkko,

On Thu, Nov 05, 2015 at 07:46:30PM +0200, Jarkko Sakkinen wrote:
> On Thu, Nov 05, 2015 at 08:47:58AM -0800, Jeremiah Mahler wrote:
> > Jarkko,
> > 
> > On Thu, Nov 05, 2015 at 01:05:45PM +0200, Jarkko Sakkinen wrote:
> > > On Thu, Nov 05, 2015 at 11:22:55AM +0200, Jarkko Sakkinen wrote:
> > > > On Wed, Nov 04, 2015 at 10:17:05AM -0800, Jeremiah Mahler wrote:
> > > > > Jarkko, all,
> > > > > 
> > [...]
> > > > > 
> > > > > The commit for this patch (9b774d5cf2db4) present in the latest
> > > > > linux-next (20151101+) breaks suspend/resume on an Acer C720 Chromebook.
> > > > > The computer will successfully suspend but when a resume is attempted
> > > > > a blank screen is displayed for a few seconds and then it reboots.
> > > > 
> > > > I think I have this same model at home (have to check). If it is, I can
> > > > try to reproduce it today when I get back to home.
> > > 
> > > Yup, it's C720P!
> > > 
> > > > What kind of environment are you running?
> > > > Are you able to acquire kernel logs?
> > > 
> > > Both of these questions still apply. Even if I create the same
> > > environment, your logs might have something useful embedded.
> > > 
> > > Thank you for reporting this issue! I'll try to find a way to reproduce
> > > and fix it at latest for -rc2.
> > > 
> > > > > -- 
> > > > > - Jeremiah Mahler
> > > 
> > > /Jarkko
> > 
> > I have attached the full dmesg.  The following snippets looked
> > particularly interesting.
> 
> I'll look at the logs with time tomorrow. What kind of distribution you
> have in your system? Can you also send your kernel config?
> 
I'm running Debian unstable, not sure of the exact version.
Attached is my current .config.

> I have the same laptop at hand and would like to setup exactly the same
> environment.
> 
> /Jarkko

The only difference is that yours is a C720P and mine is a C720.
Hopefully they are similar enough.

-- 
- Jeremiah Mahler

View attachment ".config" of type "text/plain" (128156 bytes)