Connexion wifi Freebox / ath9k

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Bonjour,

J'ai récemment acquis un nouveau portable (Asus X93S) qui me pose un souci
pour se connecter en wifi avec une Freebox v5 : après un redémarrage de la
Freebox, la connexion est établie sans souci, mais si un autre ordinateur
s'est déjà connecté à la Freebox en wifi avant, impossible de me connecter,
je dois redémarrer la box.

Je joins les extraits du log lorsque la connexion échoue.

Voici la sortie de lspci :
03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
Subsystem: AzureWave Device 1089
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f7900000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [60] Express Legacy Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 00-15-17-ff-ff-24-14-12
Capabilities: [170] Power Budgeting <?>
Kernel driver in use: ath9k

et celle de iwconfig :
wlan0 IEEE 802.11bgn ESSID:"Kirya"
Mode:Managed Frequency:2.422 GHz Access Point: C6:6E:27:A6:BE:A4
Bit Rate=65 Mb/s Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-29 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:2 Invalid misc:90 Missed beacon:0

J'utilise actuellement le noyau 3.1~rc7 sur achitecture amd64.

J'ai essayé différents réglages au niveau de la box (avec / sans
authentification WEP / WPA, canal automatique ou non etc.) mais sans succès.

Au niveau client, j'utilise habituellement NetworkManager, mais je n'ai pas
eu plus de succès avec wicd ou en utiliser /etc/network/interfaces
« manuellement ».

Tout fonctionne avec un autre point d'accès, ce qui me fait donc penser à un
problème avec la Freebox elle-même ou une incompatibilité avec le pilote
ath9k qu'utilise ma carte wifi.

J'ai tenté de contacter l'assistance de Free mais n'en espère pas grand
chose.

S'il s'agit d'un problème dans ath9k, j'aimerais pouvoir faire remonter le
bug, mais ne sais pas comment je peux réellement trouver l'origine du
problème.

Avez-vous une idée sur la façon d'opérer ?

@+
Julien

--
.''`. Julien Valroff ~ <julien@kirya.net> ~ <julien@debian.org>
: :' : Debian Developer & Free software contributor
`. `'` http://www.kirya.net/
`- 4096R/ E1D8 5796 8214 4687 E416 948C 859F EF67 258E 26B1

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Oct 1 08:55:41 ares kernel: [ 8774.854934] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
Oct 1 08:55:41 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: associating -> associated
Oct 1 08:55:43 ares avahi-daemon[1905]: Joining mDNS multicast group on interface wlan0.IPv6 with address fe80::762f:68ff:fe57:2cdc.
Oct 1 08:55:43 ares avahi-daemon[1905]: New relevant interface wlan0.IPv6 for mDNS.
Oct 1 08:55:43 ares avahi-daemon[1905]: Registering new address record for fe80::762f:68ff:fe57:2cdc on wlan0.*.
Oct 1 08:55:48 ares kernel: [ 8781.880987] wlan0: deauthenticated from ce:67:c3:86:34:80 (Reason: 15)
Oct 1 08:55:49 ares wpa_supplicant[1859]: CTRL-EVENT-DISCONNECTED bssid=ce:67:c3:86:34:80 reason=15
Oct 1 08:55:49 ares kernel: [ 8781.931122] cfg80211: Calling CRDA to update world regulatory domain
Oct 1 08:55:49 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: associated -> disconnected
Oct 1 08:55:49 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Oct 1 08:55:50 ares wpa_supplicant[1859]: Trying to authenticate with ce:67:c3:86:34:80 (SSID='Kirya' freq=2422 MHz)
Oct 1 08:55:50 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Oct 1 08:55:50 ares kernel: [ 8783.091580] wlan0: authenticate with ce:67:c3:86:34:80 (try 1)
Oct 1 08:55:50 ares wpa_supplicant[1859]: Trying to associate with ce:67:c3:86:34:80 (SSID='Kirya' freq=2422 MHz)
Oct 1 08:55:50 ares kernel: [ 8783.093674] wlan0: authenticated
Oct 1 08:55:50 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: authenticating -> associating
Oct 1 08:55:50 ares kernel: [ 8783.114042] wlan0: associate with ce:67:c3:86:34:80 (try 1)
Oct 1 08:55:50 ares kernel: [ 8783.123261] wlan0: RX ReassocResp from ce:67:c3:86:34:80 (capab=0x411 status=0 aid=2)
Oct 1 08:55:50 ares kernel: [ 8783.123265] wlan0: associated
Oct 1 08:55:50 ares wpa_supplicant[1859]: Associated with ce:67:c3:86:34:80
Oct 1 08:55:50 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: associating -> associated
Oct 1 08:55:52 ares kernel: [ 8785.016027] wlan0: no IPv6 routers present
Oct 1 08:55:56 ares kernel: [ 8789.887920] wlan0: deauthenticated from ce:67:c3:86:34:80 (Reason: 15)
Oct 1 08:55:56 ares wpa_supplicant[1859]: CTRL-EVENT-DISCONNECTED bssid=ce:67:c3:86:34:80 reason=15
Oct 1 08:55:56 ares kernel: [ 8789.903098] cfg80211: Calling CRDA to update world regulatory domain
Oct 1 08:55:56 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: associated -> disconnected
Oct 1 08:55:57 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Oct 1 08:55:58 ares wpa_supplicant[1859]: Trying to authenticate with ce:67:c3:86:34:80 (SSID='Kirya' freq=2422 MHz)
Oct 1 08:55:58 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: scanning -> authenticating
Oct 1 08:55:58 ares kernel: [ 8791.063535] wlan0: authenticate with ce:67:c3:86:34:80 (try 1)
Oct 1 08:55:58 ares wpa_supplicant[1859]: Trying to associate with ce:67:c3:86:34:80 (SSID='Kirya' freq=2422 MHz)
Oct 1 08:55:58 ares kernel: [ 8791.070815] wlan0: authenticated
Oct 1 08:55:58 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: authenticating -> associating
Oct 1 08:55:58 ares kernel: [ 8791.091384] wlan0: associate with ce:67:c3:86:34:80 (try 1)
Oct 1 08:55:58 ares kernel: [ 8791.100579] wlan0: RX ReassocResp from ce:67:c3:86:34:80 (capab=0x411 status=0 aid=2)
Oct 1 08:55:58 ares kernel: [ 8791.100583] wlan0: associated
Oct 1 08:55:58 ares wpa_supplicant[1859]: Associated with ce:67:c3:86:34:80
Oct 1 08:55:58 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: associating -> associated
Oct 1 08:56:04 ares kernel: [ 8797.894857] wlan0: deauthenticated from ce:67:c3:86:34:80 (Reason: 15)
Oct 1 08:56:05 ares wpa_supplicant[1859]: CTRL-EVENT-DISCONNECTED bssid=ce:67:c3:86:34:80 reason=15
Oct 1 08:56:05 ares kernel: [ 8797.933108] cfg80211: Calling CRDA to update world regulatory domain
Oct 1 08:56:05 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: associated -> disconnected
Oct 1 08:56:05 ares NetworkManager[1830]: <info> (wlan0): supplicant interface state: disconnected -> scanning
Oct 1 08:56:06 ares NetworkManager[1830]: <warn> Activation (wlan0/wireless): association took too long.
Oct 1 08:56:06 ares NetworkManager[1830]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Oct 1 08:56:06 ares NetworkManager[1830]: <warn> Activation (wlan0/wireless): asking for new secrets

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