Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754985AbaBFVJO (ORCPT ); Thu, 6 Feb 2014 16:09:14 -0500 Received: from mail-ea0-f174.google.com ([209.85.215.174]:39751 "EHLO mail-ea0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751426AbaBFVJL (ORCPT ); Thu, 6 Feb 2014 16:09:11 -0500 From: Peter Wu To: Bastien Traverse Cc: linux-kernel@vger.kernel.org, francis.moro@gmail.com, linux-pm@vger.kernel.org, "Rafael J. Wysocki" Subject: Re: 3.12: ethernet controller missing after resuming from suspend to RAM Date: Thu, 06 Feb 2014 22:08:25 +0100 Message-ID: <5898085.IKVHQGKOYn@al> User-Agent: KMail/4.12.2 (Linux/3.13.1-2.1-ARCH; KDE/4.12.2; x86_64; ; ) In-Reply-To: <52F2CC7B.80406@gmail.com> References: <52F2CC7B.80406@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 06 February 2014 00:42:51 Bastien Traverse wrote: > I just used my Ethernet NIC for the first time on an up-to-date > Archlinux; it was working fine until I suspended to RAM: on resume the > Realtek/Ethernet device had completely disappeared. > > The two entries absent from lspci output after resume are: > $ sudo lspci -v [..] > 03:00.2 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0a) > Subsystem: CLEVO/KAPOK Computer Device 0540 > Flags: bus master, fast devsel, latency 0, IRQ 45 > 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 also have an affected laptop where the network and MMC controller vanishes on resume. The laptop is also from Clevo, but a different model: Clevo B7130. I had no issues with my custom kernel configuration (latest version that I tested was 3.13.1), but at least the stock Arch kernels from 3.12.2 up to 3.12.6 and 3.13.1 are affected by this issue. Reproduce with: 1. Boot system. 2. lspci -nnvt > lspci-nnvt.txt 3. Suspend system (lid close) 4. lspci -nnvt > lspci-nnvt2.txt 5. Observe missing network controller (see diff below). --- boot-3.13.1/lspci-nnvt.txt 2014-02-06 17:11:07.070625446 +0100 +++ boot-3.13.1/lspci-nnvt2.txt 2014-02-06 17:11:19.843386871 +0100 @@ -11,10 +11,7 @@ +-1a.0 Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b3c] +-1b.0 Intel Corporation 5 Series/3400 Series Chipset High Definition Audio [8086:3b56] +-1c.0-[02-03]----00.0 NEC Corporation uPD720200 USB 3.0 Host Controller [1033:0194] - +-1c.1-[04]--+-00.0 JMicron Technology Corp. SD/MMC Host Controller [197b:2382] - | +-00.2 JMicron Technology Corp. Standard SD Host Controller [197b:2381] - | +-00.3 JMicron Technology Corp. MS Host Controller [197b:2383] - | \-00.5 JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller [197b:0250] + +-1c.1-[04]-- +-1c.2-[05]----00.0 Intel Corporation Centrino Advanced-N 6200 [8086:422c] +-1d.0 Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b34] +-1e.0-[06]-- The only difference now is the kernel config. I guess that it comes from CONFIG_HOTPLUG_PCI. In my non-broken config, it's unset. The Arch kernel sets CONFIG_HOTPLUG_PCI=y (and also CONFIG_HOTPLUG_PCI_ACPI=y). That guess is based on the additional messages I see with the broken config: [ 1.033628] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 1.033642] pciehp: PCI Express Hot Plug Controller Driver version: 0.4 ... [ 102.704377] iwlwifi 0000:05:00.0: no hotplug settings from platform [ 103.170193] xhci_hcd 0000:02:00.0: no hotplug settings from platform [ 103.229008] iwlwifi 0000:05:00.0: no hotplug settings from platform Before I start bisecting, do you have any ideas to debug this? The stock config of Arch Linux kernel 3.13.1-2-ARCH can be found on: https://projects.archlinux.org/svntogit/packages.git/tree/trunk/config.x86_64?h=packages/linux&id=0ea780ba731bd214db3007f57f54a3fad709a078 Regards, Peter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/