ワイヤレスインターフェイスが動作を停止し、netcfgでネットワークが見つからないことを報告します。

私はしばしばArch Linuxのインストールに問題があります。ワイヤレスネットワークは数分間動作してからランダムに消えます。 Wi-Fiメニューから再起動しようとすると、ネットワークがないことを示すメッセージが表示されます。

 > sudo wifi-menu
:: Scanning for networks                                                [FAILED] 
 > No networks found

netcfgを直接実行すると、次のメッセージが表示されます。

sudo netcfg wlan0-2WIRE555
:: wlan0-2WIRE555 up                  [ BUSY ] Successfully initialized wpa_supplicant
Could not set interface wlan0 flags (UP): Connection timed out
nl80211: Could not set interface 'wlan0' UP
Could not set interface wlan0 flags (UP): Connection timed out
WEXT: Could not set interface 'wlan0' UP
wlan0: Failed to initialize driver interface
> wpa_supplicant did not start, possible configuration error

出力はlspci次のとおりです

~ > lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:19.0 Ethernet controller: Intel Corporation 82577LM Gigabit Network Connection (rev 06)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06)
00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 06)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 06)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06)
02:00.0 Network controller: Intel Corporation Centrino Advanced-N 6200 (rev ff)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)

これが発生するたびにインターネットが機能するには、再起動する必要があります。手動で再起動するために使用できるシステムコマンドはありますか？これが永久に直すことができる問題ですか？