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[Deep Thought <1459143@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Occasionally when I am manually switching from one WiFi network to
another through the Indicator applet, the entire system freezes
completely—neither the laptop's own keyboard and trackpad nor any USB
devices produce any effect. The only way to resolve the situation is
then to force a power down, which has caused me to lose data on several
occasions.

This started occurring on Xubuntu 15.04; I have not had any similar bugs
on previous iterations of Xubuntu or other Ubuntu variants.

It seems to happen when I am switching from an unsecured to a particular
WPA-secured WiFi network, though as it happens only once in a while
(about once every two days or so under moderate computer use) I am not
sure about the source of the issue. I do know that it seems to happen
only while switching WiFi networks.

This is one of two new network-manager bugs that I noticed around the
same time, immediately after upgrading to 15.04. The other bug was
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1270257.

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


** Tags: freeze network

** Tags added: freeze

** Tags added: network

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https://bugs.launchpad.net/bugs/1459143

Title:
  Complete system freeze upon switching WiFi networks

Status in network-manager package in Ubuntu:
  New

Bug description:
  Occasionally when I am manually switching from one WiFi network to
  another through the Indicator applet, the entire system freezes
  completely—neither the laptop's own keyboard and trackpad nor any USB
  devices produce any effect. The only way to resolve the situation is
  then to force a power down, which has caused me to lose data on
  several occasions.

  This started occurring on Xubuntu 15.04; I have not had any similar
  bugs on previous iterations of Xubuntu or other Ubuntu variants.

  It seems to happen when I am switching from an unsecured to a
  particular WPA-secured WiFi network, though as it happens only once in
  a while (about once every two days or so under moderate computer use)
  I am not sure about the source of the issue. I do know that it seems
  to happen only while switching WiFi networks.

  This is one of two new network-manager bugs that I noticed around the
  same time, immediately after upgrading to 15.04. The other bug was
  https://bugs.launchpad.net/ubuntu/+source/network-
  manager/+bug/1270257.

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