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[Janus <ysangkok+launchpad@xxxxxxxxx>]

Public bug reported:

First, removal of an USB WLAN adapter (wlan1):

Dec 24 00:45:10 zeus kernel: [19429.149039] usb 2-5: USB disconnect, device number 2
...
Dec 24 00:45:10 zeus NetworkManager[641]: <info>  devices removed (path: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/net/wlan1, iface: wlan1)
Dec 24 00:45:10 zeus NetworkManager[641]: <info>  radio killswitch /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/ieee80211/phy0/rfkill2 disappeared
Dec 24 00:45:10 zeus NetworkManager[641]: <info>  (wlan1): supplicant interface state: completed -> disabled

After suspending:

Dec 24 04:22:28 zeus NetworkManager[641]: <info>  sleep requested (sleeping: no  enabled: yes)
...
Dec 24 04:22:28 zeus NetworkManager[641]: <info>  sleeping...
Dec 24 04:22:28 zeus NetworkManager[641]: <info>  (wlan1): device state change: activated -> unmanaged (reason 'sleeping') [100 10 37]
Dec 24 04:22:28 zeus NetworkManager[641]: <info>  (wlan1): canceled DHCP transaction, DHCP client pid 20332
Dec 24 04:22:28 zeus NetworkManager[641]: <info>  (wlan1): DHCPv4 state changed bound -> done
Dec 24 04:22:28 zeus NetworkManager[641]: <error> [1450927348.627824] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)

After resuming:

Dec 24 11:45:33 zeus NetworkManager[641]: <info>  wake requested (sleeping: yes  enabled: yes)
...
Dec 24 11:45:33 zeus NetworkManager[641]: <info>  waking up...
Dec 24 11:45:33 zeus NetworkManager[641]: <info>  (eth0): device state change: unavailable -> unmanaged (reason 'sleeping') [20 10 37]
Dec 24 11:45:33 zeus NetworkManager[641]: <info>  (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Dec 24 11:45:33 zeus kernel: [32468.742777] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Dec 24 11:45:34 zeus NetworkManager[641]: <info>  (wlan1): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Dec 24 11:45:34 zeus kernel: [32468.777806] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.021095] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
Dec 24 11:45:34 zeus NetworkManager[641]: <warn>  (wlan1): failed to enable userspace IPv6LL address handling
Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.029979] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.030751] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.031323] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
Dec 24 11:45:34 zeus NetworkManager[641]: <info>  NetworkManager state is now DISCONNECTED

At this point, not even eth0 works (it was there all the time). Network-
manager works again if restarted using the script in init.d.

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

** Attachment added: "Full syslog since device removal"
   https://bugs.launchpad.net/bugs/1529085/+attachment/4539685/+files/network-manager-problem.txt

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https://bugs.launchpad.net/bugs/1529085

Title:
  References device after it has been removed

Status in network-manager package in Ubuntu:
  New

Bug description:
  First, removal of an USB WLAN adapter (wlan1):

  Dec 24 00:45:10 zeus kernel: [19429.149039] usb 2-5: USB disconnect, device number 2
  ...
  Dec 24 00:45:10 zeus NetworkManager[641]: <info>  devices removed (path: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/net/wlan1, iface: wlan1)
  Dec 24 00:45:10 zeus NetworkManager[641]: <info>  radio killswitch /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-5/2-5:1.0/ieee80211/phy0/rfkill2 disappeared
  Dec 24 00:45:10 zeus NetworkManager[641]: <info>  (wlan1): supplicant interface state: completed -> disabled

  After suspending:

  Dec 24 04:22:28 zeus NetworkManager[641]: <info>  sleep requested (sleeping: no  enabled: yes)
  ...
  Dec 24 04:22:28 zeus NetworkManager[641]: <info>  sleeping...
  Dec 24 04:22:28 zeus NetworkManager[641]: <info>  (wlan1): device state change: activated -> unmanaged (reason 'sleeping') [100 10 37]
  Dec 24 04:22:28 zeus NetworkManager[641]: <info>  (wlan1): canceled DHCP transaction, DHCP client pid 20332
  Dec 24 04:22:28 zeus NetworkManager[641]: <info>  (wlan1): DHCPv4 state changed bound -> done
  Dec 24 04:22:28 zeus NetworkManager[641]: <error> [1450927348.627824] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)

  After resuming:

  Dec 24 11:45:33 zeus NetworkManager[641]: <info>  wake requested (sleeping: yes  enabled: yes)
  ...
  Dec 24 11:45:33 zeus NetworkManager[641]: <info>  waking up...
  Dec 24 11:45:33 zeus NetworkManager[641]: <info>  (eth0): device state change: unavailable -> unmanaged (reason 'sleeping') [20 10 37]
  Dec 24 11:45:33 zeus NetworkManager[641]: <info>  (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
  Dec 24 11:45:33 zeus kernel: [32468.742777] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
  Dec 24 11:45:34 zeus NetworkManager[641]: <info>  (wlan1): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
  Dec 24 11:45:34 zeus kernel: [32468.777806] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
  Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.021095] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
  Dec 24 11:45:34 zeus NetworkManager[641]: <warn>  (wlan1): failed to enable userspace IPv6LL address handling
  Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.029979] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
  Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.030751] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
  Dec 24 11:45:34 zeus NetworkManager[641]: <error> [1450953934.031323] [platform/nm-linux-platform.c:2782] do_change_link(): platform-linux: do-change-link: failure changing link 3: No such device (31)
  Dec 24 11:45:34 zeus NetworkManager[641]: <info>  NetworkManager state is now DISCONNECTED

  At this point, not even eth0 works (it was there all the time).
  Network-manager works again if restarted using the script in init.d.

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