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Reza
Asked: 2015-03-16 00:19:30 +0800 CST

nm-applet gives errors

  • 772

nm-applet always gives me a hard time when connecting to wireless. I often have to restart it and make several attempts till it connects to a network. Sometimes even restarting the computer doesn't help. This time I ran it from CLI and I got this:

** (nm-applet:2950): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-t6ky00XpYq: Connection refused

    ** (nm-applet:2950): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files

    (nm-applet:2950): nm-applet-WARNING **: Failed to register as an agent: (2) The name org.freedesktop.NetworkManager was not provided by any .service files

    (nm-applet:2950): nm-applet-WARNING **: Failed to register as an agent: (2) The name org.freedesktop.NetworkManager was not provided by any .service files

Here is the output of lspci -knn | grep Net -A2

02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 93)
    Subsystem: Intel Corporation Device [8086:5070]
    Kernel driver in use: iwlwifi
networking

2 Answers

    • org.freedesktop.NetworkManager service file is provided by network-manager package.

      $ grep -rl NetworkManager /etc/dbus-1/ /usr/share/dbus-1/
/etc/dbus-1/system.d/nm-pptp-service.conf
/etc/dbus-1/system.d/nm-strongswan-service.conf
/etc/dbus-1/system.d/nm-vpnc-service.conf
/etc/dbus-1/system.d/nm-openvpn-service.conf
/etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf
/etc/dbus-1/system.d/nm-iodine-service.conf
/etc/dbus-1/system.d/nm-openconnect-service.conf
/usr/share/dbus-1/system-services/org.freedesktop.nm_dispatcher.service

$ dpkg -S /etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf
network-manager: /etc/dbus-1/system.d/org.freedesktop.NetworkManager.conf

    • Try reinstalling it then reboot

      sudo apt-get install --reinstall network-manager
sudo reboot
    • 0

  2. The issue has nothing to do with Network Manager.

    It is a problem with iwlwifi driver and your adapter.

    It was reported that turning power saving feature of this adapter solves the problem. It can be done by running in terminal

    sudo iwconfig wlan0 power off

    But this setting will not stay after reboot.

    I would turn it off in iwlwifi module by running

    sudo tee /etc/modprobe.d/iwlwifi.conf <<< "options iwlwifi power_save=0"

    If turning off power save feature in iwlwifi module does not help, you can revert it by

    sudo rm /etc/modprobe.d/iwlwifi.conf

    And you can always add sudo iwconfig wlan0 power off to /etc/rc.local by running

    sudo -H gedit /etc/rc.local

    and adding sudo iwconfig wlan0 power off before exit 0 line.

    This command will always run on boot.

    Another kernel option that may help is options iwlwifi 11n_disable=1.

    It can be set by

    sudo tee /etc/modprobe.d/iwlwifi.conf <<< "options iwlwifi 11n_disable=1"
    • 0