Ubuntu-fr

antoine1990

Ethernet non-détecté

Bonjour tout le monde !

J'ai un souci, il y a quelques temps, après une manipulation dont je ne parviens plus à me rapeller, mon interface ethernet n'est plus détectée (je suis sur Xubuntu 12.04 sur un MacBook 2.1) lorsque je branche un cable RJ45 connecté à ma box cela n'a aucun effet.

Voici ce que donne ifconfig -a

antoine@antoine-MacBook:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:19:e3:34:7d:31  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
          Interruption:16 

eth0:avahi Link encap:Ethernet  HWaddr 00:19:e3:34:7d:31  
          inet adr:169.254.6.101  Bcast:169.254.255.255  Masque:255.255.0.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          Interruption:16 

lo        Link encap:Boucle locale  
          inet adr:127.0.0.1  Masque:255.0.0.0
          adr inet6: ::1/128 Scope:Hôte
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          Packets reçus:8 erreurs:0 :0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:0 
          Octets reçus:480 (480.0 B) Octets transmis:480 (480.0 B)

wlan0     Link encap:Ethernet  HWaddr 00:19:e3:d6:62:73  
          inet adr:192.168.0.11  Bcast:192.168.0.255  Masque:255.255.255.0
          adr inet6: fe80::219:e3ff:fed6:6273/64 Scope:Lien
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Packets reçus:417 erreurs:0 :0 overruns:0 frame:0
          TX packets:446 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000 
          Octets reçus:183395 (183.3 KB) Octets transmis:66291 (66.2 KB)

Merci d'avance pour vos pistes

Antoine

foustala

Re : Ethernet non-détecté

lspci -nn
dmesg | grep eth0

svp

antoine1990

Re : Ethernet non-détecté

antoine@antoine-MacBook:~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03)
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03)
00:07.0 Performance counters [1101]: Intel Corporation Device [8086:27a3] (rev 03)
00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High Definition Audio Controller [8086:27d8] (rev 02)
00:1c.0 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express Port 1 [8086:27d0] (rev 02)
00:1c.1 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express Port 2 [8086:27d2] (rev 02)
00:1d.0 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 [8086:27c8] (rev 02)
00:1d.1 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 [8086:27c9] (rev 02)
00:1d.2 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 [8086:27ca] (rev 02)
00:1d.3 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 [8086:27cb] (rev 02)
00:1d.7 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller [8086:27cc] (rev 02)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e2)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] (rev 02)
00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 02)
00:1f.2 IDE interface [0101]: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [IDE mode] [8086:27c4] (rev 02)
00:1f.3 SMBus [0c05]: Intel Corporation N10/ICH 7 Family SMBus Controller [8086:27da] (rev 02)
01:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller [11ab:4362] (rev 22)
02:00.0 Network controller [0280]: Atheros Communications Inc. AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express) [168c:0024] (rev 01)
03:03.0 FireWire (IEEE 1394) [0c00]: LSI Corporation FW322/323 [11c1:5811] (rev 61)

antoine@antoine-MacBook:~$ dmesg | grep eth0
[    1.375944] sky2 0000:01:00.0: eth0: addr 00:19:e3:34:7d:31
[   36.794730] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   37.287246] sky2 0000:01:00.0: eth0: enabling interface
[   37.287486] ADDRCONF(NETDEV_UP): eth0: link is not ready

merci

foustala

Re : Ethernet non-détecté

01:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller [11ab:4362] (rev 22)

peux tu donner le retour

lsmod | grep sky2  # le module est-il chargé?
sudo rmmod sky2    # déchargement
sudo modprobe sky2 # chargement
dmesg | tail -20   # réaction du noyau juste après
dmesg | grep sky2 # réaction du noyau concernant le driver

Dernière modification par foustala (Le 16/11/2014, à 16:16)

antoine1990

Re : Ethernet non-détecté

antoine@antoine-MacBook:~$ lsmod | grep sky2 
sky2                   49545  0 

antoine@antoine-MacBook:~$ dmesg | tail -20
[  479.109307] sd 5:0:0:0: [sdc] Write Protect is off
[  479.109313] sd 5:0:0:0: [sdc] Mode Sense: 23 00 00 00
[  479.109706] sd 5:0:0:0: [sdc] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
[  479.113066]  sdc:
[  479.115063] sd 5:0:0:0: [sdc] Attached SCSI removable disk
[  618.123390] usb 1-1: USB disconnect, device number 10
[  618.136080] sd 5:0:0:0: [sdc] Unhandled error code
[  618.136087] sd 5:0:0:0: [sdc]  Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  618.136096] sd 5:0:0:0: [sdc] CDB: Read(10): 28 00 01 91 9d e2 00 00 20 00
[  618.136120] end_request: I/O error, dev sdc, sector 26320354
[ 4598.213930] sky2 0000:01:00.0: eth0: disabling interface
[ 4598.236181] sky2 0000:01:00.0: PCI INT A disabled
[ 4605.517010] sky2: driver version 1.30
[ 4605.517069] sky2 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 4605.517091] sky2 0000:01:00.0: setting latency timer to 64
[ 4605.517133] sky2 0000:01:00.0: Yukon-2 EC chip revision 2
[ 4605.517270] sky2 0000:01:00.0: irq 42 for MSI/MSI-X
[ 4605.519140] sky2 0000:01:00.0: eth0: addr 00:19:e3:34:7d:31
[ 4606.292340] sky2 0000:01:00.0: eth0: enabling interface
[ 4606.292835] ADDRCONF(NETDEV_UP): eth0: link is not ready

antoine@antoine-MacBook:~$ dmesg | grep sky2
[    1.393766] sky2: driver version 1.30
[    1.393813] sky2 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    1.393830] sky2 0000:01:00.0: setting latency timer to 64
[    1.393865] sky2 0000:01:00.0: Yukon-2 EC chip revision 2
[    1.393987] sky2 0000:01:00.0: irq 42 for MSI/MSI-X
[    1.394703] sky2 0000:01:00.0: eth0: addr 00:19:e3:34:7d:31
[   36.374744] sky2 0000:01:00.0: eth0: enabling interface
[ 4598.213930] sky2 0000:01:00.0: eth0: disabling interface
[ 4598.236181] sky2 0000:01:00.0: PCI INT A disabled
[ 4605.517010] sky2: driver version 1.30
[ 4605.517069] sky2 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 4605.517091] sky2 0000:01:00.0: setting latency timer to 64
[ 4605.517133] sky2 0000:01:00.0: Yukon-2 EC chip revision 2
[ 4605.517270] sky2 0000:01:00.0: irq 42 for MSI/MSI-X
[ 4605.519140] sky2 0000:01:00.0: eth0: addr 00:19:e3:34:7d:31
[ 4606.292340] sky2 0000:01:00.0: eth0: enabling interface

foustala

Re : Ethernet non-détecté

ADDRCONF(NETDEV_UP): eth0: link is not ready

ce message d'erreur ne touche pas spécifiquement ton matériel. il va falloir rependre de zero

sudo lshw -C network
cat  /etc/network/interfaces
sudo nm-tool
sudo ifdown eth0
sudo ifup eth0
dmesg | tail -20

essaie de te souvenir des événements avant la régression

Dernière modification par foustala (Le 16/11/2014, à 21:53)

antoine1990

Re : Ethernet non-détecté

antoine@antoine-MacBook:~$ sudo lshw -C network
[sudo] password for antoine: 
  *-network               
       description: Ethernet interface
       produit: 88E8053 PCI-E Gigabit Ethernet Controller
       fabriquant: Marvell Technology Group Ltd.
       identifiant matériel: 0
       information bus: pci@0000:01:00.0
       nom logique: eth0
       version: 22
       numéro de série: 00:19:e3:34:7d:31
       capacité: 1Gbit/s
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm vpd msi pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 firmware=N/A latency=0 link=no multicast=yes port=twisted pair
       ressources: irq:42 mémoire:50200000-50203fff portE/S:1000(taille=256) mémoire:50800000-5081ffff
  *-network
       description: Interface réseau sans fil
       produit: AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express)
       fabriquant: Atheros Communications Inc.
       identifiant matériel: 0
       information bus: pci@0000:02:00.0
       nom logique: wlan0
       version: 01
       numéro de série: 00:19:e3:d6:62:73
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=3.2.0-23-generic firmware=N/A ip=192.168.0.11 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
       ressources: irq:17 mémoire:50100000-5010ffff

antoine@antoine-MacBook:~$ cat  /etc/network/interfaces
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

antoine@antoine-MacBook:~$ sudo nm-tool

NetworkManager Tool

State: connected (global)

- Device: wlan0  [NUMERICABLE-29A8 1] ------------------------------------------
  Type:              802.11 WiFi
  Driver:            ath9k
  State:             connected
  Default:           yes
  HW Address:        00:19:E3:D6:62:73

  Capabilities:
    Speed:           130 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    FREEBOX_MATHIEU_WH: Infra, 8A:8B:C5:D4:A6:78, Freq 2462 MHz, Rate 54 Mb/s, Strength 90 WPA
    FreeWifi_secure: Infra, 8A:8B:C5:D4:A6:7B, Freq 2462 MHz, Rate 54 Mb/s, Strength 90 WPA Enterprise
    FreeWifi_secure: Infra, BA:95:9A:05:36:EB, Freq 2462 MHz, Rate 54 Mb/s, Strength 69 WPA Enterprise
    NUMERICABLE-01EB:Infra, 24:EC:99:C8:68:3D, Freq 2437 MHz, Rate 54 Mb/s, Strength 64 WPA WPA2
    cremniter:       Infra, F4:CA:E5:FB:63:F4, Freq 2472 MHz, Rate 54 Mb/s, Strength 64 WPA
    FreeWifi_secure: Infra, F4:CA:E5:FB:63:F6, Freq 2472 MHz, Rate 54 Mb/s, Strength 69 WPA2 Enterprise
    Bbox-D92CE6BD:   Infra, 00:78:9E:62:E9:00, Freq 2417 MHz, Rate 54 Mb/s, Strength 57 WPA WPA2
    FreeWifi_secure: Infra, F4:CA:E5:FA:E8:72, Freq 2452 MHz, Rate 54 Mb/s, Strength 39 WPA2 Enterprise
    flypix:          Infra, BA:95:9A:05:36:E8, Freq 2462 MHz, Rate 54 Mb/s, Strength 54 WPA
    Livebox-C734:    Infra, B8:26:6C:3D:C7:34, Freq 2462 MHz, Rate 54 Mb/s, Strength 54 WPA WPA2
    NUMERICABLE-7996:Infra, E0:CE:C3:3C:52:B3, Freq 2412 MHz, Rate 54 Mb/s, Strength 52 WPA WPA2
    57roquette:      Infra, F4:CA:E5:9F:D3:40, Freq 2462 MHz, Rate 54 Mb/s, Strength 42 WPA
    Livebox-C734:    Infra, B8:26:6C:3D:C7:35, Freq 5200 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
    Bbox-D92CE6BD-5GHz: Infra, 00:78:9E:62:E9:04, Freq 5180 MHz, Rate 54 Mb/s, Strength 37 WPA WPA2
    brambilla:       Infra, 92:43:C1:38:41:8C, Freq 2457 MHz, Rate 54 Mb/s, Strength 32 WPA
    freebox_gorto:   Infra, F4:CA:E5:DC:F5:2C, Freq 2412 MHz, Rate 54 Mb/s, Strength 34 WPA2
    NganKim:         Infra, C0:3F:0E:E7:15:C2, Freq 2437 MHz, Rate 54 Mb/s, Strength 64 WEP
    freebox_loloMATHIEU: Infra, F4:CA:E5:FA:E8:70, Freq 2452 MHz, Rate 54 Mb/s, Strength 40 WEP
    FreeWifi:        Infra, 8A:8B:C5:D4:A6:7A, Freq 2462 MHz, Rate 54 Mb/s, Strength 90
    FreeWifi:        Infra, BA:95:9A:05:36:EA, Freq 2462 MHz, Rate 54 Mb/s, Strength 69
    FreeWifi:        Infra, F4:CA:E5:FB:63:F5, Freq 2472 MHz, Rate 54 Mb/s, Strength 65
    Bouygues Telecom Wi-Fi: Infra, 00:78:9E:62:E9:01, Freq 2417 MHz, Rate 54 Mb/s, Strength 50
    FreeWifi:        Infra, F4:CA:E5:9F:D3:41, Freq 2462 MHz, Rate 54 Mb/s, Strength 45
    FreeWifi:        Infra, F4:CA:E5:DC:F5:2D, Freq 2412 MHz, Rate 54 Mb/s, Strength 29
    *NUMERICABLE-29A8: Infra, 74:44:01:F4:06:83, Freq 2437 MHz, Rate 54 Mb/s, Strength 79 WPA WPA2
    freebox_SUWIPD:  Infra, BA:54:7A:88:DB:A0, Freq 2412 MHz, Rate 54 Mb/s, Strength 32 WEP
    FreeWifi:        Infra, 92:43:C1:38:41:8E, Freq 2457 MHz, Rate 54 Mb/s, Strength 27
    FreeWifi_secure: Infra, F4:CA:E5:DC:F5:2E, Freq 2412 MHz, Rate 54 Mb/s, Strength 29 WPA2 Enterprise
    FreeWifi:        Infra, BA:54:7A:88:DB:A1, Freq 2412 MHz, Rate 54 Mb/s, Strength 32
    FreeWifi_secure: Infra, BA:54:7A:88:DB:A2, Freq 2412 MHz, Rate 54 Mb/s, Strength 34 WPA Enterprise
    THE MATRIX:      Infra, 30:7E:CB:91:AC:9C, Freq 2412 MHz, Rate 54 Mb/s, Strength 32 WPA
    SFR WiFi FON:    Infra, 92:7E:CB:91:AC:9D, Freq 2412 MHz, Rate 54 Mb/s, Strength 22
    FreeWifi_secure: Infra, 00:24:D4:64:6B:8E, Freq 2462 MHz, Rate 54 Mb/s, Strength 44 WPA2 Enterprise
    FreeWifi:        Infra, F4:CA:E5:FA:E8:71, Freq 2452 MHz, Rate 54 Mb/s, Strength 39
    minley:          Infra, 00:24:D4:64:6B:8C, Freq 2462 MHz, Rate 54 Mb/s, Strength 39 WPA
    FreeWifi:        Infra, 00:24:D4:64:6B:8D, Freq 2462 MHz, Rate 54 Mb/s, Strength 44
    NUMERICABLE-CC99:Infra, 24:EC:99:02:C3:2D, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
    Elk_Box:         Infra, 24:EC:99:C8:44:36, Freq 2437 MHz, Rate 54 Mb/s, Strength 37 WPA WPA2
    droquette:       Infra, 16:EF:08:09:85:28, Freq 2462 MHz, Rate 54 Mb/s, Strength 29 WEP
    FreeWifi:        Infra, 16:EF:08:09:85:2A, Freq 2462 MHz, Rate 54 Mb/s, Strength 25
    Livebox-aab0:    Infra, 00:19:70:2E:CE:99, Freq 2437 MHz, Rate 54 Mb/s, Strength 29 WPA WPA2
    DartyBox_D5BA:   Infra, A0:21:B7:63:59:93, Freq 2437 MHz, Rate 54 Mb/s, Strength 22 WPA
    IC_0C0CC2:       Infra, 00:26:44:74:E7:22, Freq 2462 MHz, Rate 54 Mb/s, Strength 25 WPA
    FreeWifi:        Infra, C2:07:DD:AB:50:36, Freq 2462 MHz, Rate 54 Mb/s, Strength 30
    Livebox-8f51:    Infra, 5C:33:8E:BF:2E:C2, Freq 2457 MHz, Rate 54 Mb/s, Strength 29 WPA WPA2
    FreeWifi_secure: Infra, C2:07:DD:AB:50:37, Freq 2462 MHz, Rate 54 Mb/s, Strength 25 WPA Enterprise
    NUMERICABLE-1FF5:Infra, 9C:D3:6D:A4:1F:F9, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA WPA2
    NEUF_94E4:       Infra, 00:17:33:EB:94:E8, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WPA
    Livebox-2F6A:    Infra, 34:8A:AE:32:2F:6B, Freq 5560 MHz, Rate 54 Mb/s, Strength 47 WPA WPA2
    Sergio:          Infra, F4:CA:E5:99:C3:B8, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WPA
    FreeWifi_secure: Infra, F4:CA:E5:99:C3:BA, Freq 2437 MHz, Rate 54 Mb/s, Strength 24 WPA2 Enterprise
    FreeWifi_secure: Infra, 16:EF:08:09:85:2B, Freq 2462 MHz, Rate 54 Mb/s, Strength 22 WPA Enterprise
    Elk_Box_EXT:     Infra, 44:94:FC:47:0F:50, Freq 2437 MHz, Rate 54 Mb/s, Strength 35 WPA WPA2
    Laurence&JeanMarc_EXT: Infra, 04:A1:51:C8:12:8C, Freq 2472 MHz, Rate 54 Mb/s, Strength 35 WPA2
    SFR WiFi Mobile: Infra, 92:7E:CB:91:AC:9F, Freq 2412 MHz, Rate 54 Mb/s, Strength 24 WPA2 Enterprise
    freebox_FOVHXU:  Infra, C2:07:DD:AB:50:34, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA
    Bbox-A7A9840A:   Infra, DC:71:44:FE:63:F8, Freq 2432 MHz, Rate 54 Mb/s, Strength 19 WPA WPA2
    FreeWifi:        Infra, F4:CA:E5:99:C3:B9, Freq 2437 MHz, Rate 54 Mb/s, Strength 24

  IPv4 Settings:
    Address:         192.168.0.11
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.0.1

    DNS:             89.2.0.1
    DNS:             89.2.0.2


- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            sky2
  State:             unmanaged
  Default:           no
  HW Address:        00:19:E3:34:7D:31

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

antoine@antoine-MacBook:~$ sudo ifdown eth0
ifdown: interface eth0 not configured

sudo ifup eth0 tourne dans le vide éternellement...

antoine@antoine-MacBook:~$ dmesg | tail -20
[  157.854107] ip_tables: (C) 2000-2006 Netfilter Core Team
[  157.858018] nf_conntrack version 0.5.0 (15533 buckets, 62132 max)
[  159.068414] input: Mouseemu virtual keyboard as /devices/virtual/input/input14
[  159.068790] input: Mouseemu virtual mouse as /devices/virtual/input/input15
[ 2179.808153] usb 1-1: new high-speed USB device number 9 using ehci_hcd
[ 2180.002237] Initializing USB Mass Storage driver...
[ 2180.002426] scsi4 : usb-storage 1-1:1.0
[ 2180.002531] usbcore: registered new interface driver usb-storage
[ 2180.002534] USB Mass Storage support registered.
[ 2180.058679] usbcore: registered new interface driver uas
[ 2181.002302] scsi 4:0:0:0: Direct-Access     Generic  Flash Disk       8.07 PQ: 0 ANSI: 4
[ 2181.009049] sd 4:0:0:0: Attached scsi generic sg2 type 0
[ 2181.010220] sd 4:0:0:0: [sdb] 7989248 512-byte logical blocks: (4.09 GB/3.80 GiB)
[ 2181.011209] sd 4:0:0:0: [sdb] Write Protect is off
[ 2181.011217] sd 4:0:0:0: [sdb] Mode Sense: 23 00 00 00
[ 2181.012219] sd 4:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 2181.018246]  sdb: sdb1
[ 2181.021658] sd 4:0:0:0: [sdb] Attached SCSI removable disk
[ 2250.888918]  sdb:
[ 2261.613856]  sdb:

Impossible de me souvenir de ce qui s'est passé, c'est il y a plus d'un an, comme le Wi-Fi marchait toujours je ne m'en suis pas trop occupé :-$

foustala

Re : Ethernet non-détecté

la plupart des posts rebondissent sur des histoire de config routeur, et de cable defectueux.

avant de continuer les investigations, essaie un autre cable réseau, et un autre routeur.