Erro do Network Manager

Question

Quando eu executo o applet do NetworkManager, nm-applet , no meu Scientific Linux 6.4, eu recebo:

[root@computer]# nm-applet

** (nm-applet:4157): WARNING **: bus_init(): Could not get the session bus. Make sure the message bus daemon is running! Message: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

GConf Error: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.)

An instance of nm-applet is already running.

(nm-applet:4157): GConf-WARNING **: Directory '/system/networking/connections' was not being monitored by GConfClient 0x9cac60

Quando eu passar o comando lspci -v , obtenho:

0c:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
Subsystem: Dell Wireless 1397 WLAN Mini-Card
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at f69fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [58] Vendor Specific Information: Len=78 <?>
Capabilities: [e8] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [d0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [13c] Virtual Channel
Capabilities: [160] Device Serial Number 18-6d-04-ff-ff-2c-70-1a
Capabilities: [16c] Power Budgeting <?>
Kernel driver in use: b43-pci-bridge
Kernel modules: ssb

Como posso resolver este problema?

    

Answer 1

Já está em execução?

Você já tem o applet do NetworkManager, nm-applet em execução? Você pode confirmar com este comando:

$ pgrep -f nm-applet

Se ele retorna um número, então ele já está rodando e é isso que processa o PID.

Exemplo

$ pgrep -f nm-applet
2217

Quando tento e executo uma segunda vez como usuário saml , recebo a seguinte mensagem:

$ nm-applet 
An instance of nm-applet is already running.

** (nm-applet:32393): WARNING **: <WARN>  constructor(): Couldn't initialize the D-Bus manager.

Se eu executar como root :

$ nm-applet 
An instance of nm-applet is already running.

Rodando como root?

Provavelmente não é uma boa ideia tentar executar o applet do NetworkManager como root. Eu tentaria executá-lo como minha conta de usuário normal.

O que devo fazer?

Para começar, eu tentaria reiniciar o serviço NetworkManager .

$ sudo service NetworkManager restart

Em seguida, eu me certificaria de que o nm-applet ainda não estivesse em execução antes de tentar executá-lo. Talvez matando com este comando:

$ pkill nm-applet

Terceiro, eu tentaria usar a ferramenta de linha de comando, nm-tool , apenas como uma maneira de confirmar que o NetworkManager services está funcionando normalmente.

Exemplo:

$ nm-tool |less
NetworkManager Tool

State: connected

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            e1000e
  State:             unavailable
  Default:           no
  HW Address:        F1:12:12:2F:7D:4E

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

- Device: wlan0  [Auto none_of_your_business_3] --------------------------------
  Type:              802.11 WiFi
  Driver:            iwlagn
...
...