linux-kernel - Re: Corrupted files after suspend to disk

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Date:	Wed, 28 Mar 2012 18:18:23 -0400
From:	Dave Jones <davej@...hat.com>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	Andreas Hartmann <andihartmann@...19freenet.de>,
	richard -rw- weinberger <richard.weinberger@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org,
	keithp@...thp.com, airlied@...hat.com
Subject: Re: Corrupted files after suspend to disk

On Thu, Mar 29, 2012 at 12:12:53AM +0200, Jiri Kosina wrote:
 > On Mon, 12 Mar 2012, Dave Jones wrote:
 > 
 > >  > https://bugzilla.novell.com/show_bug.cgi?id=732908
 > >  > 
 > >  > Following the link, you are able to compare the used chips - maybe there
 > >  > are some equal components?
 > > 
 > > This looks like the i915 corruption problem mentioned in a few other threads.
 > > 
 > > if you compare the hexdump of the good/bad files, you find that the corruption
 > > happens in 8x 4 byte writes of either 0x00000000 or 0x00aaaaaa.
 > > 
 > > KeithP clued me in last week that that looks like an ARGB pixel quad, so these
 > > writes are likely 8 pixel strips.
 > 
 > So this keeps happening to me on almost every resume still ... Keith, is 
 > there any way I could help you debug this?

Try this https://bugzilla.kernel.org/attachment.cgi?id=72739

	Dave

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