linux-kernel - Re: Lenovo X240 (haswell) suspend-to-ram hangs on 3-14.0-rc2

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Date:	Sat, 15 Feb 2014 03:01:24 +0800
From:	Jeff Chua <jeff.chua.linux@...il.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Dave Airlie <airlied@...hat.com>
Subject: Re: Lenovo X240 (haswell) suspend-to-ram hangs on 3-14.0-rc2

On Fri, Feb 14, 2014 at 9:57 PM, Takashi Iwai <tiwai@...e.de> wrote:
> The other possible change in hda_intel.c is the enablement of runtime
> PM for Panther Point.  But it's been working for other chips, so
> wondering why it hits anything.  In anyway, please give the full
> Oops messages not only the stack trace.

> Any difference in the sound hardware, i.e. PCI controller and codec
> chips?

# X230 reported the sound card as:
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset
Family High Definition Audio Controller (rev 04)
== HDA Intel PCH, ALC269VC Analog

# X240 reported the sound card as:
00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio
Controller (rev 04)
==  HDA Intel PCH, ALC292 Analog

Now I managed to make suspend-to-ram work by using sound as module
instead of build-in.

Here's the difference ...

# bad
CONFIG_SND_HDA_CODEC_HDMI =y
CONFIG_SND_HDA_INTEL=y
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_CODEC_HDMI=y
CONFIG_SND_HDA_GENERIC=y


# good
CONFIG_SND_HDA_CODEC_HDMI =m
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_INPUT_BEEP=m
CONFIG_SND_HDA_CODEC_HDMI=m
CONFIG_SND_HDA_GENERIC=m


Strange?

Jeff
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