Ubuntu-fr

superkikix

déconnexions livebox carte atheros ar 2413

Bonjour à tous,
un petit souci embêtant de déconnexion wifi avec ma carte atheros ar2413: au bout d'un temps d'utilisation aléatoire, la connexion avec ma livebox est perdue (même si Wicd me dit que je suis toujours connecté).
Bizarrerie: ce problème ne semble exister que lorsque je suis devant mon ordinateur. Lorsque je laisse mon ordinateur allumé avec amule par exemple, pas de déconnexion.
A priori ce n'est pas un problème matériel, car je suis en double boot XP/hardy, et (bien que cela me désole) tout se passe bien sous windows...
Voilà, j'espère que je ne suis pas le seul à avoir ce problème, où que l'un d'entre vous saura me guider, j'avoue ne pas être un as et ne pas tout comprendre ce que fait ma machine...
Voilà le résultats de quelques commandes qui pourraient aider à la résolution de mon problème:

kiki@anatole:~$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu 
DISTRIB_RELEASE=8.04 
DISTRIB_CODENAME=hardy 
DISTRIB_DESCRIPTION="Ubuntu 8.04.3 LTS"

kiki@anatole:~$ lsusb 
Bus 003 Device 002: ID 152d:2329 JMicron Technology Corp. / JMicron USA Technology Corp. 
Bus 003 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000

kiki@anatole:~$ lspci 
00:00.0 Host bridge: ATI Technologies Inc Unknown device 5a31 (rev 01) 
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge 
00:12.0 IDE interface: ATI Technologies Inc IXP SB400 Serial ATA Controller (rev 80) 
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80) 
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80) 
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller (rev 80) 
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 81) 
00:14.1 IDE interface: ATI Technologies Inc IXP SB400 IDE Controller (rev 80) 
00:14.2 Audio device: ATI Technologies Inc IXP SB4x0 High Definition Audio Controller (rev 01) 
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) 
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge (rev 80) 
01:05.0 VGA compatible controller: ATI Technologies Inc RC410 [Radeon Xpress 200M] 
02:04.0 Ethernet controller: Atheros Communications Inc. AR2413 802.11bg NIC (rev 01) 
02:06.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 01) 
02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) 
02:0a.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21 IEEE-1394a-2000 Controller (PHY/Link)

kiki@anatole:~$ sudo lshw -C network 
[sudo] password for kiki: 
  *-network:0             
       description: Wireless interface 
       product: AR2413 802.11bg NIC 
       vendor: Atheros Communications Inc. 
       physical id: 4 
       bus info: pci@0000:02:04.0 
       logical name: wifi0 
       version: 01 
       serial: 00:16:e3:04:12:c5 
       width: 32 bits 
       clock: 33MHz 
       capabilities: pm bus_master cap_list logical ethernet physical wireless 
       configuration: broadcast=yes driver=ath_pci ip=192.168.1.13 latency=168 maxlatency=28 mingnt=10 module=ath_pci multicast=yes wireless=IEEE 802.11g 
  *-network:1 
       description: Ethernet interface 
       product: RTL-8139/8139C/8139C+ 
       vendor: Realtek Semiconductor Co., Ltd. 
       physical id: 7 
       bus info: pci@0000:02:07.0 
       logical name: eth0 
       version: 10 
       serial: 00:a0:d1:36:5d:03 
       size: 10MB/s 
       capacity: 100MB/s 
       width: 32 bits 
       clock: 33MHz 
       capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation 
       configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=half latency=64 link=no maxlatency=64 mingnt=32 module=8139too multicast=yes port=MII speed=10MB/s

kiki@anatole:~$ lsmod 
Module                  Size  Used by 
ipv6                  268036  8 
wlan_tkip              13696  3 
af_packet              23812  4 
binfmt_misc            12808  1 
rfcomm                 41744  2 
l2cap                  25728  13 rfcomm 
bluetooth              61028  4 rfcomm,l2cap 
ppdev                  10372  0 
cpufreq_powersave       2688  0 
cpufreq_userspace       5284  0 
cpufreq_conservative     8712  0 
cpufreq_ondemand        9740  0 
cpufreq_stats           7104  0 
freq_table              5536  2 cpufreq_ondemand,cpufreq_stats 
video                  19856  0 
output                  4736  1 video 
dock                   11280  0 
sbs                    15112  0 
sbshc                   7680  1 sbs 
container               5632  0 
iptable_filter          3840  0 
ip_tables              14820  1 iptable_filter 
x_tables               16132  1 ip_tables 
sbp2                   24072  0 
parport_pc             36260  0 
lp                     12324  0 
parport                37832  3 ppdev,parport_pc,lp 
joydev                 13120  0 
pcmcia                 40876  0 
wlan_scan_sta          14720  1 
ath_rate_sample        14336  1 
snd_hda_intel         346136  2 
snd_pcm_oss            42144  0 
snd_mixer_oss          17920  1 snd_pcm_oss 
snd_pcm                78596  3 snd_hda_intel,snd_pcm_oss 
snd_page_alloc         11400  2 snd_hda_intel,snd_pcm 
snd_hwdep              10500  1 snd_hda_intel 
snd_seq_dummy           4868  0 
snd_seq_oss            35584  0 
evdev                  13056  5 
snd_seq_midi            9376  0 
serio_raw               7940  0 
snd_rawmidi            25760  1 snd_seq_midi 
psmouse                40336  0 
snd_seq_midi_event      8320  2 snd_seq_oss,snd_seq_midi 
ath_pci               101024  0 
wlan                  207728  5 wlan_tkip,wlan_scan_sta,ath_rate_sample,ath_pci 
snd_seq                54224  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event 
yenta_socket           27276  1 
ath_hal               192592  3 ath_rate_sample,ath_pci 
rsrc_nonstatic         13696  1 yenta_socket 
pcmcia_core            40596  3 pcmcia,yenta_socket,rsrc_nonstatic 
snd_timer              24836  2 snd_pcm,snd_seq 
snd_seq_device          9612  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq 
battery                14212  0 
ac                      6916  0 
button                  9232  0 
snd                    56996  14 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_hwdep,snd_seq_dummy,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device 
ati_agp                 9996  0 
agpgart                34760  1 ati_agp 
pcspkr                  4224  0 
soundcore               8800  1 snd 
shpchp                 34452  0 
pci_hotplug            30880  1 shpchp 
i2c_piix4               9612  0 
i2c_core               24832  1 i2c_piix4 
ext3                  136968  2 
jbd                    48404  1 ext3 
mbcache                 9600  1 ext3 
sg                     36880  0 
sd_mod                 30720  7 
sr_mod                 17956  0 
cdrom                  37408  1 sr_mod 
atiixp                  5648  0 [permanent] 
ide_core              113996  1 atiixp 
8139cp                 24704  0 
usb_storage            73792  1 
libusual               19236  1 usb_storage 
ata_generic             8324  0 
ohci1394               33584  0 
ieee1394               93752  2 sbp2,ohci1394 
8139too                27648  0 
mii                     6400  2 8139cp,8139too 
ehci_hcd               37900  0 
sata_sil               12296  4 
ohci_hcd               26640  0 
pata_atiixp             8960  0 
pata_acpi               8320  0 
usbcore               146412  5 usb_storage,libusual,ehci_hcd,ohci_hcd 
libata                159728  4 ata_generic,sata_sil,pata_atiixp,pata_acpi 
scsi_mod              151692  6 sbp2,sg,sd_mod,sr_mod,usb_storage,libata 
thermal                16796  0 
processor              36616  2 thermal 
fan                     5636  0 
fbcon                  42912  0 
tileblit                3584  1 fbcon 
font                    9472  1 fbcon 
bitblit                 6784  1 fbcon 
softcursor              3072  1 bitblit 
fuse                   50708  7

kiki@anatole:~$ iwconfig 
lo        no wireless extensions. 

eth0      no wireless extensions. 

wifi0     no wireless extensions. 

ath0      IEEE 802.11g  ESSID:"Livebox-7308"  Nickname:"" 
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:1D:6A:B2:48:51   
          Bit Rate:48 Mb/s   Tx-Power:16 dBm   Sensitivity=1/1  
          Retry:off   RTS thr:off   Fragment thr:off 
          Power Management:off 
          Link Quality=49/70  Signal level=-44 dBm  Noise level=-93 dBm 
          Rx invalid nwid:509140  Rx invalid crypt:0  Rx invalid frag:0 
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

kiki@anatole:~$ uname -r -m 
2.6.24-24-generic i686

kiki@anatole:~$ cat  /etc/network/interfaces 
auto lo 
iface lo inet loopback

kiki@anatole:~$ nm-tool 
Le programme 'nm-tool' n'est pas installé actuellement.  Vous pouvez l'installer en tapant : 
sudo apt-get install network-manager 
bash: nm-tool : commande introuvable