Meu cartão sem fio wlan0 no Thinkpad T400 pode funcionar por um curto período, após cada inicialização no Ubuntu 12.04. Mas depois de um tempo, talvez uma hora depois, ele começa a não funcionar. Aqui estão as saídas de comandos que eu corro seguindo link e link
e link
Eu me pergunto qual pode ser o problema e a solução? Obrigado.
$ nm-tool
- Device: wlan0 ----------------------------------------------------------------
Type: 802.11 WiFi
Driver: iwlwifi
State: disconnected
Default: no
HW Address:
Capabilities:
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points
$ lshw -C network
*-network
description: Wireless interface
product: PRO/Wireless 5100 AGN [Shiloh] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 00
serial:
width: 64 bits
clock: 33MHz
capabilities: cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-60-generic-pae firmware=8.83.5.1 build 33692 latency=0 multicast=yes wireless=IEEE 802.11abgn
resources: irq:48 memory:f4200000-f4201fff
$ lsmod | grep iwlwifi
iwlwifi 362337 0
mac80211 436493 4 rt2800lib,rt2x00usb,rt2x00lib,iwlwifi
cfg80211 178877 3 rt2x00lib,iwlwifi,mac80211
$ iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
eth0 no wireless extensions.
$ sudo iwlist scan
lo Interface doesn't support scanning.
wlan0 Interface doesn't support scanning : Input/output error
eth0 Interface doesn't support scanning.
$ rfkill list
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no