J'ai un problème étrange que je soupçonne d'être dû à une défaillance matérielle, mais je voudrais en être sûr.
Sur un Panasonic Toughbook CF-T5, sous Kubuntu 12.04. Double démarrage avec Windows XP mais je ne pense pas que ce soit le problème, je n'ai pas démarré dans Windows depuis très longtemps.
L'ordinateur portable a un interrupteur physique pour activer/désactiver le wifi (et une led qui est allumée/éteinte en conséquence).
Il y a quelques mois, le wifi a commencé à se déconnecter/se reconnecter (et la led à s'éteindre/se rallumer), puis à un moment donné, il est mort pour toujours. La led est également éteinte, quelle que soit la position de l'interrupteur.
La case à cocher "Activer le sans fil" dans knetworkmanager est grisée.
Ce qui rend la situation encore plus bizarre, c'est que si je branche un deuxième wifi (clé usb), cela ne fonctionne pas non plus ! Et cela fonctionne sur d'autres machines.
La seule différence est que la liste rfkill ne montre pas le deuxième wifi (wlan1) comme étant matériellement bloqué.
J'ai passé un certain temps à chercher des problèmes similaires et j'ai essayé la solution proposée. J'ai fait rfkill unblock all, vérifié les paramètres du bios, la partition Windows (XP, que je n'avais pas utilisé depuis très longtemps), et même le démarrage à partir d'une clé usb, rien ne fait fonctionner le wifi.
Je joins un tas de sorties de commandes potentiellement utiles.
$ iwconfig
wlan1 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
wlan0 IEEE 802.11abg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
1: phy1: Wireless LAN
Soft blocked: no
Hard blocked: no
$ lspci -k
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: agpgart-intel
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: i915
Kernel modules: intelfb, i915
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 (rev 02)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: uhci_hcd
00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: uhci_hcd
00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: uhci_hcd
00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: uhci_hcd
00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Device 8338
Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel modules: leds-ss4200, iTCO_wdt, intel-rng
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel driver in use: ata_piix
00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel modules: i2c-i801
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
Subsystem: Intel Corporation PRO/Wireless 3945ABG Network Connection
Kernel driver in use: iwl3945
Kernel modules: iwl3945
04:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel driver in use: 8139too
Kernel modules: 8139too, 8139cp
04:05.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 8d)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel driver in use: yenta_cardbus
Kernel modules: yenta_socket
04:05.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 13)
Subsystem: Matsushita Electric Industrial Co., Ltd. Panasonic CF-Y5 laptop
Kernel driver in use: sdhci-pci
Kernel modules: sdhci-pci
$ lsmod
Module Size Used by
zd1211rw 57509 0
bnep 17830 2
rfcomm 38139 0
bluetooth 158447 10 bnep,rfcomm
parport_pc 32114 0
ppdev 12849 0
binfmt_misc 17292 1
dm_crypt 22528 0
snd_hda_codec_idt 60251 1
snd_hda_intel 32719 3
snd_hda_codec 109562 2 snd_hda_codec_idt,snd_hda_intel
snd_hwdep 13276 1 snd_hda_codec
snd_pcm 80916 2 snd_hda_intel,snd_hda_codec
snd_seq_midi 13132 0
snd_rawmidi 25424 1 snd_seq_midi
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51592 2 snd_seq_midi,snd_seq_midi_event
snd_timer 28931 2 snd_pcm,snd_seq
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
arc4 12473 4
snd 62250 15 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
pcmcia 39826 0
joydev 17393 0
iwl3945 73145 0
iwl_legacy 71334 1 iwl3945
mac80211 436493 3 zd1211rw,iwl3945,iwl_legacy
tpm_infineon 13200 0
yenta_socket 27428 0
pcmcia_rsrc 18367 1 yenta_socket
cfg80211 178877 4 zd1211rw,iwl3945,iwl_legacy,mac80211
pcmcia_core 21511 3 pcmcia,yenta_socket,pcmcia_rsrc
soundcore 14635 1 snd
psmouse 97218 0
serio_raw 13027 0
snd_page_alloc 14115 2 snd_hda_intel,snd_pcm
tpm_tis 18389 0
panasonic_laptop 13194 0
mac_hid 13077 0
sparse_keymap 13658 1 panasonic_laptop
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
i915 428458 2
8139too 23283 0
drm_kms_helper 45466 1 i915
drm 197641 3 i915,drm_kms_helper
8139cp 26688 0
sdhci_pci 18324 0
sdhci 28241 1 sdhci_pci
usbhid 41937 0
hid 81731 1 usbhid
i2c_algo_bit 13199 1 i915
video 19115 1 i915
$ sudo lshw -class network
*-network DISABLED
description: Wireless interface
product: PRO/Wireless 3945ABG [Golan] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 02
serial: 00:19:d2:0a:43:4b
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwl3945 driverversion=3.2.0-72-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11abg
resources: irq:42 memory:d0000000-d0000fff
*-network
description: Ethernet interface
product: RTL-8139/8139C/8139C+
vendor: Realtek Semiconductor Co., Ltd.
physical id: 1
bus info: pci@0000:04:01.0
logical name: eth0
version: 10
serial: 00:0b:97:ba:fe:86
size: 100Mbit/s
capacity: 100Mbit/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=full ip=192.168.1.5 latency=32 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=100Mbit/s
resources: irq:19 ioport:2000(size=256) memory:d0100000-d01000ff
*-network DISABLED
description: Wireless interface
physical id: 2
bus info: usb@1:5
logical name: wlan1
serial: 00:1a:ff:01:dc:b9
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=zd1211rw driverversion=3.2.0-72-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg
