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

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Date:	Fri, 14 Feb 2014 09:00:12 -0500
From:	Peter Hurley <peter@...leysoftware.com>
To:	Jeff Chua <jeff.chua.linux@...il.com>
CC:	Takashi Iwai <tiwai@...e.de>, 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 02/14/2014 08:57 AM, Takashi Iwai wrote:
> At Fri, 14 Feb 2014 21:46:25 +0800,
> Jeff Chua wrote:
>>
>> On Fri, Feb 14, 2014 at 1:28 AM, Takashi Iwai <tiwai@...e.de> wrote:
>>> At Thu, 13 Feb 2014 12:14:58 -0500,  Peter Hurley wrote:
>>> Apparently there's no maintainer but I've cc'ed people who might
>>> have a clue about this.
>>
>> Peter ... thanks for pointer.
>>
>>> On Fri, Feb 14, 2014 at 1:28 AM, Takashi Iwai <tiwai@...e.de> wrote:
>>> Is it a Intel+Nvidia hybrid?  If so, does it happen even with
>>> CONFIG_VGA_SWITCHEROO=n?
>>
>> It's not Intel+Nvidia. It's Intel Core i7-4600U 2.1 GHz, Intel HD Graphics 4400.
>
> OK.  Then it's a different thing as I expected.
>
> 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.

Also, please attach your config and dmesg.

>> I checked my config. CONFIG_VGA_SWITCHEROO is not set.
>>
>> On Fri, Feb 14, 2014 at 5:21 AM, Theodore Ts'o <tytso@....edu> wrote:
>>> For what it's worth, I have a the X240's bigger brother --- a T540p
>>> (with intel graphics and the 3k panel) running 3.14-rc2, and
>>> suspend-to-ram is working without any problems on my laptop.
>>
>> Interesting. Perhaps it's the USB options. I had these set to "y"
>>
>> CONFIG_USB_XHCI_HCD=y
>> CONFIG_USB_EHCI_HCD=y
>> CONFIG_USB_EHCI_ROOT_HUB_TT=y
>> CONFIG_USB_EHCI_TT_NEWSCHED=y
>> CONFIG_USB_EHCI_PCI=y
>>
>> Again, These same config works find on X230. It's very strange. The
>> same hard disk (SSD) can suspend-to-ram on the X230 but not on the
>> X240. The X230 has i7-3520M vs X240 i7-4600U.
>
> Any difference in the sound hardware, i.e. PCI controller and codec
> chips?
>
>> I've even tried with all the USB set to "n" and still couldn't S2D.
>
> Do you mean S2R?  I thought the bug is about S3?


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