Concerning the setup of configuration files to make the 'wpa_supplicant'
daemon operate correctly :
I am trying to describe below a practical solution providing more
information than Message #10 of Kel Modderman.
As system administrator, my old method to start the 'wpa_supplicant'
daemon was to use a Shell script like following simplified one :
iface=`/sbin/iwconfig 2>&1 | grep -i 'IEEE *802\.11' | head -1 |
cut -d ' ' -f 1`
if [ "$iface" ]
then
/sbin/wpa_supplicant -B -i "$iface" -D wext -c
/etc/wpa_supplicant.conf
fi
But for some months, at startup, a 'wpa_supplicant -u -s' process
systematically appears, fails, stays in memory, reappears as soon as
killed, and makes my previous method also fail !
In order that the 'wpa_supplicant' daemon is correctly started again, I
had to perform following painful work :
- Discover that 'wpa_supplicant -u -s' is started using following dbus
service file :
/usr/share/dbus-1/system-services/fi.epitest.hostap.WPASupplicant.service
Currently, the 'Exec=' line of this dbus service file is :
Exec=/sbin/wpa_supplicant -u -s
- Discover that the process using this dbus service file to start the
'wpa_supplicant' daemon is 'NetworkManager' (currently from
network-manager 0.8.1-3)
- Inside the '/etc/network/interfaces' file, define the 'Wifi' logical
interface as the one pointing to the physical MAC address of my wireless
chip.
- Inside the '/etc/NetworkManager/system-connections' folder, create a
file describing the '802-11-wireless' setup of the 'Wifi' logical
interface defined in the '/etc/network/interfaces' file.
- Inside '/etc/NetworkManager/NetworkManager.conf', in the '[ifupdown]'
section, set managed=true
With this configuration, 'NetworkManager' starts correctly the
'wpa_supplicant' daemon (and then 'dhclient').
Could the Debian maintainer :
- Verify if the above information is relevant and accurate,
- If necessary, improve it,
- Precisely document the '-s' and '-u' options in the manual page of
'wpa_supplicant' (and 'wpa_cli' and 'wpa_gui' if appropriate).
Thank you very much in advance.
Etienne URBAH
78 Avenue de Suffren
75015 PARIS
Tél: +33 1 45 67 51 64
Fax: +33 1 47 34 61 40
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