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[Bug 1464738] Re: System freeze on switching to wireless network

 

I assume I'm seeing the same bug, except on Xubuntu 15.04. If I
configure a static IP for a connection to a wifi network using nm-
applet, the system freezes a few seconds later, requiring a hard reboot.
After rebooting, if the computer attempts to to connect to the same
network, it will freeze again unless I quickly disable networking via
nm-applet. Connecting using DHCP does not cause this problem.

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https://bugs.launchpad.net/bugs/1464738

Title:
  System freeze on switching to wireless network

Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  Description:    Ubuntu 15.04
  Release:        15.04

  
  This is a HP ProBook 6570b notebook.
  It freezes after logging in when connecting to WLAN.
  Occurs only when static IP configured.
  Doesn't occur when network-manager disabled (/etc/network/interfaces used)

  Reproduce:

  1. Configure WLAN static IP, DNS
  2. Reboot
  3. After login, (after the "you are connected to aa wifi network" message disappears) the system freeze

  Another case:

  1. Login with WLAN disabled by hardware switch
  2. Connect to ethernet network
  3. Configure WLAN static IP, DNS
  4. Turn on WLAN and connect to a network
  5. Now the system wont freeze as the primary network connection is the ethernet
  6. Unplug the ethernet cable 
  7. Some seconds later the system freeze

  
  Workaround:

  Turn off WLAN before login

  or

  Turn off  WLAN before unplug cable
  Then turn it on

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: network-manager 0.9.10.0-4ubuntu15.1
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  Uname: Linux 3.19.0-18-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Jun 12 19:22:20 2015
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2015-05-07 (36 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  IpRoute:
   default via 192.168.180.20 dev eth0  proto static  metric 1024 
   169.254.0.0/16 dev eth0  scope link  metric 1000 
   192.168.123.0/24 dev wlan0  proto kernel  scope link  src 192.168.123.67 
   192.168.180.0/24 dev eth0  proto kernel  scope link  src 192.168.180.205
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-dev:
   DEVICE  TYPE      STATE      DBUS-PATH                                  CONNECTION          CON-UUID                              CON-PATH                                           
   eth0    ethernet  connected  /org/freedesktop/NetworkManager/Devices/1  Wired connection 1  eb3175ee-4070-4a74-bfe9-407216bfa6e1  /org/freedesktop/NetworkManager/ActiveConnection/0 
   wlan0   wifi      connected  /org/freedesktop/NetworkManager/Devices/2  DSL-Kecskemet       259040d7-dcfb-417d-aeaf-e6f6d378c3ea  /org/freedesktop/NetworkManager/ActiveConnection/2 
   lo      loopback  unmanaged  /org/freedesktop/NetworkManager/Devices/0  --                  --                                    --
  nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

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References