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[Bug 1388130] Re: Cannot connect to WiFi with Nvidia GPU using nvidia-331, SSD

 

It would really be quite surprising for unity-greeter to have any effect
on nm-applet without breaking a whole lot of other things. The one thing
pointed out that looked the most promising were the D-Bus errors, and
the "no agent available" message in syslog -- that's really where we
should be looking.

Please, see that your system is fully up-to-date, and if the bug can be
reproduced there, then let's try to remove the nvidia proprietary
drivers and see if this still has any effect on wifi.

The agent NetworkManager is looking for is almost always nm-applet (as
from the network-manager-applet source package), except in conditions
like in Gnome Shell. Perhaps there are logs in .xsession-errors (or now
.cache/upstart/gnome-session-Unity.log?) that could explain issues on
the nm-applet side if NetworkManager can't connect to it?

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https://bugs.launchpad.net/bugs/1388130

Title:
  Cannot connect to WiFi with Nvidia GPU using nvidia-331, SSD

Status in System76:
  Triaged
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  For some strange reason, we cannot connect to WiFi on hardware with a
  descrete Nvidia GPU (using the nvidia-331 driver) when the system is
  running off a fast SSD.

  Swap the SSD for a platter drive, and things work fine. Likewise, on
  Intel GPU systems, with either an SSD or a platter drive, WiFi works
  fine.

  The failure message is:

  """
  Connection activation failed.
  (1) Creation of object for path '/org/freedesktop/NetworkManager/ActiveConnection/2' failed in libnm-glib
  """

  See the attached screenshot.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: network-manager 0.9.8.8-0ubuntu28
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Oct 31 08:58:25 2014
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  IpRoute:
   default via 10.17.76.1 dev eth0  proto static 
   10.17.76.0/24 dev eth0  proto kernel  scope link  src 10.17.76.193  metric 1
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con:
   NAME                      UUID                                   TYPE              TIMESTAMP    TIMESTAMP-REAL                     AUTOCONNECT   READONLY   DBUS-PATH                                 
   system76_5g               d7cafbd5-f1ef-422d-9ed4-4b3a9095b234   802-11-wireless   0            never                              yes           no         /org/freedesktop/NetworkManager/Settings/1
   Wired connection 1        c52af28c-07c5-4140-bf2c-3f0d236a05fc   802-3-ethernet    1414767492   Fri 31 Oct 2014 08:58:12 AM MDT    yes           no         /org/freedesktop/NetworkManager/Settings/0
  nmcli-dev:
   DEVICE     TYPE              STATE         DBUS-PATH                                  
   wlan0      802-11-wireless   disconnected  /org/freedesktop/NetworkManager/Devices/1  
   eth0       802-3-ethernet    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         disabled

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References