T400无线适配器不起作用
在每次启动到Ubuntu 12.04后，我的Thinkpad T400上的无线网卡wlan0可以工作一会儿。 但过了一段时间，也许一个小时后，它开始不起作用。 以下是我在https://help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide和https://help.ubuntu.com/community/WifiDocs/WirelessTroubleShootingGuide/Drivers和https：//help.ubuntu之后运行的命令输出.COM / 12.04 / Ubuntu的帮助/净无线troubleshooting.html
我想知道可能是什么问题和解决方案？ 谢谢。
$ 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