From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mario Limonciello <mario_limonciello@dell.com>
Subject: Re: [PATCH] Add a quirk for the Dell XPS 13 (2015) when in PS/2 mode.
Date: Mon, 16 Mar 2015 15:50:51 -0500
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To: Jason Ekstrand <jason@jlekstrand.net>
Cc: Benjamin Tissoires <benjamin.tissoires@gmail.com>, =?UTF-8?B?UGFsaSBS?= =?UTF-8?B?b2jDoXI=?= <pali.rohar@gmail.com>, Dmitry Torokhov <dmitry.torokhov@gmail.com>, LKML <linux-kernel@vger.kernel.org>, "linux-input@vger.kernel.org" <linux-input@vger.kernel.org>, Rob <robr.bensson@gmail.com>


On 03/16/2015 03:42 PM, Jason Ekstrand wrote:
> On Mon, Mar 16, 2015 at 11:50 AM, Mario Limonciello
> <mario_limonciello@dell.com> wrote:
> Thanks,
> I'm now running a hacked up kernel that's Torvalds' tree from Saturday
> morning (same as before) + a patch from Benjamin to fix the touchpad +
> the DSDT hack given above.  With that, I have HDA audio (not I2S)
> which is working.  Also, suspend/resume now works properly with this
> new cocktail.
> --Jason
That's great to hear and definitely confirms that it was the sound card in the funky state causing the suspend/resume issues.  Testing is ongoing with that BIOS and if no issues crop up should be around soon.

Is this the patch from Benjamin that you're running?
http://pkgs.fedoraproject.org/cgit/kernel.git/commit/?h=f21&id=d75cb059558345e47a13881512a1600e3e17ba21
I haven't yet run it myself.  I'm curious, what sort of behavior change do you see with it?