Difference between revisions of "Wicd"

Revision as of 20:51, 6 March 2012

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Wicd is a network connection manager that can manage wireless and wired interfaces, similar and an alternative to NetworkManager. Wicd is written in Python and GTK+, requiring fewer dependencies than other network managers. Alternatively, a version of Wicd for KDE, written in Qt, is available from the Arch User Repository. Wicd can also run from the terminal in a curses interface, requiring no X server session or task panel (see #Running Wicd).

Installation

Install wicd, available in the Official Repositories.

GTK client

For a GTK front-end, install wicd-gtk, available in the Official Repositories.

KDE client

For a KDE front-end, install wicd-kde^AUR, available in the Arch User Repository.

Notifications

To enable visual notifications about network status, you need to install the notification-daemon.

If you are not using gnome, you will want to install xfce4-notifyd instead of the notification-daemon, because it pulls a lot of unnecessary gnome packages.

Alternative

The wicd-bzr^AUR buildscript is available from AUR, which should build the latest development branch. If you need an alternative version or you just want to roll your own package, you can easily build it using ABS.

Getting Started

Initial Setup

Wicd provides a daemon that must be started.

First, stop all previously running network daemons:

# rc.d stop network
# rc.d stop dhcpcd
# rc.d stop networkmanager

Now, edit /etc/rc.conf as root:

# nano /etc/rc.conf

Disable (!) any existing network management daemons in the DAEMONS array, including network, dhcpcd, and networkmanager.

Now, add dbus (if not already present) and wicd to the DAEMONS array, in that order. The DAEMONS array should now look something like this:

DAEMONS=(syslog-ng dbus !network !dhcpcd !networkmanager wicd ...)

Save and close.

Add your account to network group:

# gpasswd -a USERNAME network

Reboot your computer or start the daemons:

# rc.d start dbus 

and finally

# rc.d start wicd

If you added your user to a new group, logout and then login.

Running Wicd

To load Wicd, run:

$ wicd-client

To force it to start minimized in the notification area, run:

$ wicd-client --tray

If your desktop environment does not have a notification area, run:

$ wicd-client -n

You can add wicd-client to your DE/WM startup to have the application start when you log in.

You can also run wicd as a curses application from the terminal like so:

$ wicd-curses

Troubleshooting

Failed to get IP address

If wicd repeatedly fails to get an IP address using the default dhcpcd client, try installing and using dhclient instead:

# pacman -S dhclient

Do not forget to select dhclient as the primary dhcp client in wicd options afterwards!

If wicd can get an IP address for a wired interface and is unable to get an IP address for a wireless interface, try disabling the wireless card's powersaving features:

# iwconfig wlan0 power off

Random disconnecting

If dmesg says wlan0: deauthenticating from MAC by local choice (reason=3) and you lose your wifi connection, it is likely that you have a bit too agressive powersaving on your wifi card[1]. Try disabling the wireless card's powersaving features:

# iwconfig wlan0 power off

#!/bin/sh
/sbin/iwconfig wlan0 power off

If your card does not support "iwconfig wlan0 power off", check the BIOS for power management options. Disabling PCI-Express power management in bios on a Lenovo W520 resolved this issue.

Importing pynotify failed, notifications disabled

In case the package did not get installed automatically -- the package's name is "python-notify":

# pacman -S python-notify

Dbus connection error message

Make sure to use the following command for your .xinitrc:

exec ck-launch-session [your environment here]

As an example, mine reads:

exec ck-launch-session openbox-session

Otherwise you will get dbus error messages and not be able to connect to networks.

• NOTE: If wicd suddenly stopped working and it complains about dbus, it is quite likely that you just need to remove wicd fully, including and all its configuration files, and re-install it from scratch:

pacman -R wicd
rm -Rf /etc/wicd /var/log/wicd /etc/dbus-1/system.d/wicd*
pacman -S wicd

Check this link for more details: http://bbs.archlinux.org/viewtopic.php?pid=577141#p577141

Wicd-client also throws a dbus connection error message ("Could not connect to wicd's D-Bus interface.") when wicd is not running due to a problem with a config file. It seems that sometimes an empty account gets added to /etc/wicd/wired-settings.conf in which case you simply have to remove the

[] 

and restart wicd.

Problems after package update

Sometimes the wicd client fails to load after a package update due to dbus errors.

A solution is to remove the config files in the /etc/wicd/ directory.

# rc.d stop wicd
# rm /etc/wicd/*.conf
# rc.d start wicd

Note about graphical sudo programs

If you are receiving an error about wicd failing to find a graphical sudo program, run one of the following commands:

$ ktsuss wicd-client -n

$ gksudo wicd-client -n

$ kdesu wicd-client -n

These programs require the ktsuss (found in the AUR), gksu, and kdesu packages, respectively.

Making eduroam work with wicd

This profile will only work for eduroam institutions which use TTLS and will not work for PEAP.

Save the following as /etc/wicd/encryption/templates/ttls-80211

name = TTLS for Wireless
author = Alexander Clouter
version = 1
require anon_identity *Anonymous_Username identity *Identity password *Password 
optional ca_cert *Path_to_CA_Cert cert_subject *Certificate_Subject
-----
ctrl_interface=/var/run/wpa_supplicant
network={
       ssid="$_ESSID"
       scan_ssid=$_SCAN

       key_mgmt=WPA-EAP
       eap=TTLS

       ca_cert="$_CA_CERT"
       subject_match="$_CERT_SUBJECT"
 
       phase2="auth=MSCHAPv2 auth=PAP"

       anonymous_identity="$_ANON_IDENTITY"
       identity="$_IDENTITY"
       password="$_PASSWORD"
}

Open a terminal

cd /etc/wicd/encryption/templates
echo ttls-80211 >> active

Open wicd, choose TTLS for Wireless in the properties of eduroam, and enter the appropriate settings for your institution. The format of the subject match should be something like "/CN=server.example.com".

NB. This only works in my institution by commenting subject_match, which is not secure, but at least it connects.

Problem changing from wicd to another network manager

When I tried to switch back to the knetworkmanager, without uninstalling wicd, I edited /etc/rc.conf and put a '!' in front of wicd, removed it from networkmanager, rebooted and obviously wicd did not load. When I started KDE though I got a message saying that wicd-client could not start normally because wicd was not running. Wicd-client should not have started as it is not in autostart. The trick stop it from loading is to go to /etc/xdg/autostart and do:

$ sudo nano wicd-tray.desktop

and make it hidden on startup, or if you are not planning to autostart wicd-client again just remove the file.

Two instances of wicd-client (and possibly two icons in tray)

See the note in Wicd#Running_Wicd about the autostart file in /etc/xdg/autostart and the forum post and bug report provided in Wicd#External_Links. Essentially, if /etc/xdg/autostart/wicd-tray.desktop exists, you only need wicd in /etc/rc.conf daemons and should remove it from your DE/WM autostart file.

Bad password using PEAP with TKIP/MSCHAPV2

The connection template PEAP with TKIP/MSCHAPV2 requires the user to enter the path to a CA certificate besides entering username and password. However this can cause troubles resulting in a error message of a bad password *. A possible solution is the usage of PEAP with GTC instead of TKIP/MSCHAPV2 which does not require to enter the path of the CA cert.

External links

• Note on interfaces at the official site
• Forum post about two instances of wicd-client and /etc/xdg/autostart
• Bug report mentioning /etc/xdg/autostart and wicd-client behavior