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Date: Mon, 10 Mar 2014 08:11:44 +0200
Message-ID: <CANUX_P15ryyg3RGqm5pW0oZKTptKHspW=4S76BpMg2GT0nGbUQ@mail.gmail.com> (sfid-20140310_071218_077071_43B0517D)
Subject: Re: wifi driver or USB might leads suspend/resume failure on thinkpad
 X1 carbon
From: Emmanuel Grumbach <egrumbach@gmail.com>
To: Shuduo Sang <sangshuduo@gmail.com>
Cc: linux-usb@vger.kernel.org,
	linux-wireless <linux-wireless@vger.kernel.org>,
	Tedd <tedd.an@intel.com>
Content-Type: text/plain; charset=ISO-8859-1
Sender: linux-wireless-owner@vger.kernel.org

Hi,

On Mon, Mar 10, 2014 at 7:05 AM, Shuduo Sang <sangshuduo@gmail.com> wrote:
> Hi,
>
> Sorry for cross posting. I'm suffering an issue my Thinkpad X1 Carbon
> can't resume after suspend recently. I tried many ways including
> latest vanilla kernel, latest stable 3.13 and 3.11 kernel but it still
> happens. I found it will not happen when I turn off WIFI device or USB
> 3.0 in BIOS. So I suspect something need fix in either wifi driver or
> USB side. Since Windows 7 works good so I suppose no hardware issue.
> Anyone has some ideas to fix it or debug it?
>
> Thanks,
> Shuduo
>

If you disable WiFi only (without touching USB 3.0 in BIOS), it works?
How do you disable WiFi? Rfkill or removing iwlwifi?

>
> lspci -vnn output:
> ..
> sniped
> ..
> 00:1d.0 USB controller: Intel Corporation Lynx Point-LP USB EHCI #1
> (rev 04) (prog-if 20 [EHCI])
> Subsystem: Lenovo Device 2218
> Flags: bus master, medium devsel, latency 0, IRQ 23
> Memory at f052d000 (32-bit, non-prefetchable) [size=1K]
> Capabilities: [50] Power Management version 3
> Capabilities: [58] Debug port: BAR=1 offset=00a0
> Capabilities: [98] PCI Advanced Features
> Kernel driver in use: ehci-pci
> ..
> 03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
> Subsystem: Intel Corporation Dual Band Wireless-AC 7260
> Flags: bus master, fast devsel, latency 0, IRQ 59
> Memory at f0400000 (64-bit, non-prefetchable) [size=8K]
> Capabilities: [c8] Power Management version 3
> Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
> Capabilities: [40] Express Endpoint, MSI 00
> Capabilities: [100] Advanced Error Reporting
> Capabilities: [140] Device Serial Number 7c-7a-91-ff-ff-5e-4c-cd
> Capabilities: [14c] Latency Tolerance Reporting
> Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>
> Kernel driver in use: iwlwifi
> Kernel modules: iwlwifi
> --
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