Não é possível conectar-se à ethernet em um modem a cabo

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1

Eu tenho um modem a cabo Arris e meu laptop tem um Controlador Gigabit Ethernet JMC250 PCI Express . Não consigo me conectar à sua rede com fio, nem com o NetworkManager, o Wicd, nem com a linha de comando no Debian Stable. Eu tentei também rodar um LiveCD baseado em Porteus (baseado no Slackware), mas o resultado foi o mesmo.

Eu também tentei muitas vezes descarregar o módulo jme e recarregá-lo, sem opções, e também com as opções force_pseudohp=1 , no_pseudohp=1 e no_extplug=1 , mas sem sucesso.

Eu também tentei desligar o switch rfkill, porque eu posso conectar ao Wifi sem problemas usando o NetworkManager.

Aqui está o log de quando tentar se conectar com o NetworkManager: 

Feb  5 15:38:50 localhost NetworkManager[2225]: <info> enable requested (sleeping: no  enabled: no)
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> waking up and re-enabling...
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (wlan0): now managed
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (wlan0): bringing up device.
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (wlan0): deactivating device (reason 'managed') [2]
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (eth0): now managed
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (eth0): preparing device.
Feb  5 15:38:50 localhost NetworkManager[2225]: <info> (eth0): deactivating device (reason 'managed') [2]

O log do Wicd (que usa ferramentas de linha de comando padrão): 

2014/02/05 15:35:50 :: Executing /etc/network/if-down.d/upstart with params 
2014/02/05 15:35:50 :: /etc/network/if-down.d/upstart returned 0
2014/02/05 15:35:50 :: Executing /etc/network/if-down.d/wpasupplicant with params 
2014/02/05 15:35:50 :: /etc/network/if-down.d/wpasupplicant returned 0
2014/02/05 15:35:50 :: attempting to set hostname with dhclient
2014/02/05 15:35:50 :: using dhcpcd or another supported client may work better
2014/02/05 15:35:50 :: /sbin/dhclient -v -r wlan0
2014/02/05 15:35:50 :: ifconfig wlan0 0.0.0.0 
2014/02/05 15:35:50 :: /sbin/ip route flush dev wlan0
2014/02/05 15:35:50 :: ifconfig wlan0 down
2014/02/05 15:35:50 :: ifconfig wlan0 up
2014/02/05 15:35:50 :: Executing /etc/network/if-post-down.d/wireless-tools with params 
2014/02/05 15:35:50 :: /etc/network/if-post-down.d/wireless-tools returned 0
2014/02/05 15:35:50 :: Executing /etc/network/if-post-down.d/wpasupplicant with params 
2014/02/05 15:35:50 :: /etc/network/if-post-down.d/wpasupplicant returned 0
2014/02/05 15:35:50 :: wpa_cli -i wlan0 terminate
2014/02/05 15:35:50 :: Executing /etc/network/if-down.d/upstart with params 
2014/02/05 15:35:50 :: /etc/network/if-down.d/upstart returned 0
2014/02/05 15:35:50 :: Executing /etc/network/if-down.d/wpasupplicant with params 
2014/02/05 15:35:50 :: /etc/network/if-down.d/wpasupplicant returned 0
2014/02/05 15:35:50 :: attempting to set hostname with dhclient
2014/02/05 15:35:50 :: using dhcpcd or another supported client may work better
2014/02/05 15:35:50 :: /sbin/dhclient -v -r eth0
2014/02/05 15:35:50 :: ifconfig eth0 0.0.0.0 
2014/02/05 15:35:50 :: /sbin/ip route flush dev eth0
2014/02/05 15:35:50 :: ifconfig eth0 down
2014/02/05 15:35:50 :: ifconfig eth0 up
2014/02/05 15:35:50 :: Executing /etc/network/if-post-down.d/wireless-tools with params 
2014/02/05 15:35:50 :: /etc/network/if-post-down.d/wireless-tools returned 0
2014/02/05 15:35:50 :: Executing /etc/network/if-post-down.d/wpasupplicant with params 
2014/02/05 15:35:50 :: /etc/network/if-post-down.d/wpasupplicant returned 0
2014/02/05 15:35:50 :: wpa_cli -i eth0 terminate
2014/02/05 15:35:50 :: found lastused in configuration True
2014/02/05 15:35:50 :: Executing /etc/network/if-pre-up.d/ethtool with params 
2014/02/05 15:35:50 :: /etc/network/if-pre-up.d/ethtool returned 0
2014/02/05 15:35:50 :: Executing /etc/network/if-pre-up.d/wireless-tools with params 
2014/02/05 15:35:50 :: /etc/network/if-pre-up.d/wireless-tools returned 0
2014/02/05 15:35:50 :: Executing /etc/network/if-pre-up.d/wpasupplicant with params 
2014/02/05 15:35:50 :: /etc/network/if-pre-up.d/wpasupplicant returned 0
2014/02/05 15:35:50 :: Putting interface down
2014/02/05 15:35:50 :: ifconfig eth0 down
2014/02/05 15:35:50 :: Releasing DHCP leases...
2014/02/05 15:35:50 :: attempting to set hostname with dhclient
2014/02/05 15:35:50 :: using dhcpcd or another supported client may work better
2014/02/05 15:35:50 :: /sbin/dhclient -v -r eth0
2014/02/05 15:35:50 :: Setting false IP...
2014/02/05 15:35:50 :: ifconfig eth0 0.0.0.0 
2014/02/05 15:35:50 :: Stopping wpa_supplicant
2014/02/05 15:35:50 :: wpa_cli -i eth0 terminate
2014/02/05 15:35:50 :: Flushing the routing table...
2014/02/05 15:35:50 :: /sbin/ip route flush dev eth0
2014/02/05 15:35:50 :: Putting interface up...
2014/02/05 15:35:50 :: ifconfig eth0 up
2014/02/05 15:35:52 :: Running DHCP with hostname localhost
2014/02/05 15:35:52 :: attempting to set hostname with dhclient
2014/02/05 15:35:52 :: using dhcpcd or another supported client may work better
2014/02/05 15:35:52 :: /sbin/dhclient -v eth0
2014/02/05 15:35:52 :: Internet Systems Consortium DHCP Client 4.2.2
2014/02/05 15:35:52 :: Copyright 2004-2011 Internet Systems Consortium.
2014/02/05 15:35:52 :: All rights reserved.
2014/02/05 15:35:52 :: For info, please visit https://www.isc.org/software/dhcp/
2014/02/05 15:35:52 :: 
2014/02/05 15:35:52 :: Listening on LPF/eth0/80:ee:73:1f:6d:47
2014/02/05 15:35:52 :: Sending on   LPF/eth0/80:ee:73:1f:6d:47
2014/02/05 15:35:52 :: Sending on   Socket/fallback
2014/02/05 15:35:52 :: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
2014/02/05 15:36:00 :: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14
2014/02/05 15:36:14 :: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
2014/02/05 15:36:29 :: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 17
2014/02/05 15:36:46 :: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
2014/02/05 15:36:53 :: No DHCPOFFERS received.
2014/02/05 15:36:53 :: No working leases in persistent database - sleeping.
2014/02/05 15:36:53 :: DHCP connection failed
2014/02/05 15:36:53 :: exiting connection thread
2014/02/05 15:36:53 :: Sending connection attempt result dhcp_failed
2014/02/05 15:36:53 :: ifconfig eth0
2014/02/05 15:36:53 :: ifconfig wlan0
2014/02/05 15:36:53 :: Forced disconnect on
2014/02/05 15:36:53 :: iwconfig wlan0
2014/02/05 15:36:53 :: Executing /etc/network/if-down.d/upstart with params 
2014/02/05 15:36:53 :: /etc/network/if-down.d/upstart returned 0
2014/02/05 15:36:53 :: Executing /etc/network/if-down.d/wpasupplicant with params 
2014/02/05 15:36:53 :: /etc/network/if-down.d/wpasupplicant returned 0
2014/02/05 15:36:53 :: attempting to set hostname with dhclient
2014/02/05 15:36:53 :: using dhcpcd or another supported client may work better
2014/02/05 15:36:53 :: /sbin/dhclient -v -r wlan0
2014/02/05 15:36:53 :: ifconfig wlan0 0.0.0.0 
2014/02/05 15:36:53 :: /sbin/ip route flush dev wlan0
2014/02/05 15:36:53 :: ifconfig wlan0 down
2014/02/05 15:36:53 :: ifconfig wlan0 up
2014/02/05 15:36:53 :: Executing /etc/network/if-post-down.d/wireless-tools with params 
2014/02/05 15:36:53 :: /etc/network/if-post-down.d/wireless-tools returned 0
2014/02/05 15:36:53 :: Executing /etc/network/if-post-down.d/wpasupplicant with params 
2014/02/05 15:36:53 :: /etc/network/if-post-down.d/wpasupplicant returned 0
2014/02/05 15:36:53 :: wpa_cli -i wlan0 terminate
2014/02/05 15:36:53 :: Executing /etc/network/if-down.d/upstart with params 
2014/02/05 15:36:53 :: /etc/network/if-down.d/upstart returned 0
2014/02/05 15:36:53 :: Executing /etc/network/if-down.d/wpasupplicant with params 
2014/02/05 15:36:53 :: /etc/network/if-down.d/wpasupplicant returned 0
2014/02/05 15:36:53 :: attempting to set hostname with dhclient
2014/02/05 15:36:53 :: using dhcpcd or another supported client may work better
2014/02/05 15:36:53 :: /sbin/dhclient -v -r eth0
2014/02/05 15:36:53 :: ifconfig eth0 0.0.0.0 
2014/02/05 15:36:53 :: /sbin/ip route flush dev eth0
2014/02/05 15:36:53 :: ifconfig eth0 down
2014/02/05 15:36:53 :: ifconfig eth0 up
2014/02/05 15:36:53 :: Executing /etc/network/if-post-down.d/wireless-tools with params 
2014/02/05 15:36:53 :: /etc/network/if-post-down.d/wireless-tools returned 0
2014/02/05 15:36:53 :: Executing /etc/network/if-post-down.d/wpasupplicant with params 
2014/02/05 15:36:53 :: /etc/network/if-post-down.d/wpasupplicant returned 0
2014/02/05 15:36:53 :: wpa_cli -i eth0 terminate

Algumas outras informações: 

$ sudo ethtool eth0
Settings for eth0:
    Supported ports: [ TP MII ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Half 1000baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Half 1000baseT/Full 
    Advertised pause frame use: Symmetric Receive-only
    Advertised auto-negotiation: Yes
    Speed: 10Mb/s
    Duplex: Half
    Port: MII
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    Supports Wake-on: pg
    Wake-on: g
    Current message level: 0x000020c6 (8390)
                   probe link rx_err tx_err hw
    Link detected: no

$ sudo nm-tool 

NetworkManager Tool

State: disconnected

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            jme
  State:             unavailable
  Default:           no
  HW Address:        80:EE:73:1F:6D:47

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off
    
por Teresa e Junior 06.02.2014 / 12:58

2 respostas

1

Graças a Deus eu insisti nisso :) Extraído dos fóruns do Ubuntu : 

sudo ethtool -s eth0 autoneg off speed 100 duplex full

Resultados depois de executar este comando: 

Supported ports: [ TP MII ]
Supported link modes:   10baseT/Half 10baseT/Full 
                        100baseT/Half 100baseT/Full 
                        1000baseT/Half 1000baseT/Full 
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes:  Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 1
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: pg
Wake-on: g
Current message level: 0x000020c6 (8390)
               probe link rx_err tx_err hw
Link detected: yes
    
por 12.02.2014 / 08:15
2

A saída ethtool diz tudo: 

Link detected: no

O cabo de rede, a própria interface ou o que você está conectando está danificado / quebrado. O fato de você ter tentado vários sistemas operacionais, e todos eles se comportarem da mesma forma, suporta isso.

Basicamente, isso não é um problema de software.

    
por 06.02.2014 / 14:41

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