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[Bug 1495063] [NEW] Networking occasionally doesn't recover from suspend

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Phill <1495063@xxxxxxxxxxxxxxxxxx>
Date: Sat, 12 Sep 2015 12:00:13 -0000
Reply-to: Bug 1495063 <1495063@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

Occasionally, networking is disabled upon recovery from suspend.
Clicking "Enable Networking" on the menu from the notification icon has
no effect. It requires network-manager to be restarted with `service
network-manager restart`.

I can't identify a pattern to the problem. I can suspend the computer
for minutes or hours without it happening.

I've not noticed it on other computers running 14.04 that I have, so
it's probably limited to my this particular hardware.

I didn't notice it on previous versions of Ubuntu on this hardware.
However, due to the nature of the problem it will not be practical to
bisect the kernel as I don't have a reliable method of reproducing the
fault as of yet.

My network devices are as follows (I use the wireless one only):

Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 02)
Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager 0.9.8.8-0ubuntu7.1
ProcVersionSignature: Ubuntu 3.16.0-48.64~14.04.1-generic 3.16.7-ckt15
Uname: Linux 3.16.0-48-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.12
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Sep 12 12:44:30 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2015-07-13 (60 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
IpRoute:
 default via 192.168.1.1 dev wlan1  proto static 
 192.168.1.0/24 dev wlan1  proto kernel  scope link  src 192.168.1.2  metric 9 
 192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
RfKill:
 0: phy0: Wireless LAN
 	Soft blocked: no
 	Hard blocked: no
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME                      UUID                                   TYPE              TIMESTAMP    TIMESTAMP-REAL                     AUTOCONNECT   READONLY   DBUS-PATH                                 
 HTC Portable Hotspot DF99 b31b75bc-5b76-4592-9b4a-d9d860ea34aa   802-11-wireless   1441832180   Wed 09 Sep 2015 21:56:20 BST       yes           no         /org/freedesktop/NetworkManager/Settings/1
 TALKTALK-D069DC           700ea4cb-a660-479e-aa32-c00ad71e9064   802-11-wireless   1442058263   Sat 12 Sep 2015 12:44:23 BST       yes           no         /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE     TYPE              STATE         DBUS-PATH                                  
 eth1       802-3-ethernet    unavailable   /org/freedesktop/NetworkManager/Devices/1  
 wlan1      802-11-wireless   connected     /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   WIFI       WWAN-HARDWARE   WWAN      
 running         0.9.8.8    connected       enabled       enabled         enabled    enabled         enabled

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1495063

Title:
  Networking occasionally doesn't recover from suspend

Status in network-manager package in Ubuntu:
  New

Bug description:
  Occasionally, networking is disabled upon recovery from suspend.
  Clicking "Enable Networking" on the menu from the notification icon
  has no effect. It requires network-manager to be restarted with
  `service network-manager restart`.

  I can't identify a pattern to the problem. I can suspend the computer
  for minutes or hours without it happening.

  I've not noticed it on other computers running 14.04 that I have, so
  it's probably limited to my this particular hardware.

  I didn't notice it on previous versions of Ubuntu on this hardware.
  However, due to the nature of the problem it will not be practical to
  bisect the kernel as I don't have a reliable method of reproducing the
  fault as of yet.

  My network devices are as follows (I use the wireless one only):

  Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 02)
  Network controller: Qualcomm Atheros AR9287 Wireless Network Adapter (PCI-Express) (rev 01)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: network-manager 0.9.8.8-0ubuntu7.1
  ProcVersionSignature: Ubuntu 3.16.0-48.64~14.04.1-generic 3.16.7-ckt15
  Uname: Linux 3.16.0-48-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.12
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Sep 12 12:44:30 2015
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-07-13 (60 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  IpRoute:
   default via 192.168.1.1 dev wlan1  proto static 
   192.168.1.0/24 dev wlan1  proto kernel  scope link  src 192.168.1.2  metric 9 
   192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con:
   NAME                      UUID                                   TYPE              TIMESTAMP    TIMESTAMP-REAL                     AUTOCONNECT   READONLY   DBUS-PATH                                 
   HTC Portable Hotspot DF99 b31b75bc-5b76-4592-9b4a-d9d860ea34aa   802-11-wireless   1441832180   Wed 09 Sep 2015 21:56:20 BST       yes           no         /org/freedesktop/NetworkManager/Settings/1
   TALKTALK-D069DC           700ea4cb-a660-479e-aa32-c00ad71e9064   802-11-wireless   1442058263   Sat 12 Sep 2015 12:44:23 BST       yes           no         /org/freedesktop/NetworkManager/Settings/0
  nmcli-dev:
   DEVICE     TYPE              STATE         DBUS-PATH                                  
   eth1       802-3-ethernet    unavailable   /org/freedesktop/NetworkManager/Devices/1  
   wlan1      802-11-wireless   connected     /org/freedesktop/NetworkManager/Devices/0
  nmcli-nm:
   RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   WIFI       WWAN-HARDWARE   WWAN      
   running         0.9.8.8    connected       enabled       enabled         enabled    enabled         enabled

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