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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Francis Moreau <francis.moro@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
        Linux PM list <linux-pm@vger.kernel.org>
Subject: Re: 3.12: ethernet controller missing after resuming from suspend to RAM
Date: Thu, 12 Dec 2013 15:57:05 +0100
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On Thursday, December 12, 2013 09:00:01 AM Francis Moreau wrote:
> Hello,
> 
> I'm encountering an issue after resuming my system from suspend to RAM:
> my ethernet controller is missing, it seems that the kernel doesn't see
> it anymore. It's missing from /sys/class/net.
> 
> Before suspending, this is what lspci gives.
> 
> 03:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL8111/8168 PCI Express Gigabit Ethernet controller (rev 0a)
>         Subsystem: CLEVO/KAPOK Computer Device 0540
>         Flags: bus master, fast devsel, latency 0, IRQ 46
>         I/O ports at e000 [size=256]
>         Memory at f0a04000 (64-bit, prefetchable) [size=4K]
>         Memory at f0a00000 (64-bit, prefetchable) [size=16K]
>         Capabilities: [40] Power Management version 3
>         Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
>         Capabilities: [70] Express Endpoint, MSI 01
>         Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
>         Capabilities: [d0] Vital Product Data
>         Capabilities: [100] Advanced Error Reporting
>         Capabilities: [160] Device Serial Number 02-00-00-00-68-4c-e0-00
>         Kernel driver in use: r8169
>         Kernel modules: r8169
> 
> I can't see anything obvious in dmesg.

Please send a dmesg output including the first suspend-resume cycle
after a fresh boot (the one when you lose the NIC).

Thanks,
Rafael