以前也装过这个系统，当时可以用Fn+F5开启/关闭，最近加装了个内置蓝牙，结果只能开关蓝牙，而无线网卡一点动静都没有。yu@YYC:~$ iwconfig ath0
ath0 IEEE 802.11g ESSID:"" Nickname:""
Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power:17 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Power Management:off
Link Quality=0/70 Signal level=-95 dBm Noise level=-95 dBm
Rx invalid nwid:5060 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
代码： 全选
root@YYC:~# lspci -v
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-----
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02:02.0 Ethernet controller: Atheros Communications Inc. AR5212/AR5213 Multiprotocol MAC/baseband processor (rev 01)
Subsystem: AMBIT Microsystem Corp. ThinkPad 11b/g Wireless LAN Mini PCI Adapter
Flags: bus master, medium devsel, latency 168, IRQ 11
Memory at c0200000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [44] Power Management version 2
02:08.0 Ethernet controller: Intel Corporation 82801DB PRO/100 VE (MOB) Ethernet Controller (rev 81)
Subsystem: IBM ThinkPad R40
Flags: bus master, medium devsel, latency 66, IRQ 11
Memory at c0210000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 8000 [size=64]
Capabilities: [dc] Power Management version 2代码： 全选
root@YYC:~# lshw
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-----
-----
*-network:0
description: Wireless interface
product: AR5212/AR5213 Multiprotocol MAC/baseband processor
vendor: Atheros Communications Inc.
physical id: 2
bus info: pci@0000:02:02.0
logical name: wifi0
version: 01
serial: 00:11:f5:2c:b5:58
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=ath_pci latency=168 maxlatency=28 mingnt=10 module=ath_pci multicast=yes wireless=IEEE 802.11g
*-network:1
description: Ethernet interface
product: 82801DB PRO/100 VE (MOB) Ethernet Controller
vendor: Intel Corporation
physical id: 8
bus info: pci@0000:02:08.0
logical name: eth0
version: 81
serial: 00:0d:60:37:74:20
size: 10MB/s
capacity: 100MB/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.23-k4-NAPI duplex=half firmware=N/A latency=66 link=no maxlatency=56 mingnt=8 module=e100 multicast=yes port=MII speed=10MB/s
root@YYC:~# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wifi0 no wireless extensions.
ath0 IEEE 802.11g ESSID:"" Nickname:""
Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated
Bit Rate:0 kb/s Tx-Power:17 dBm Sensitivity=1/1
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=0/70 Signal level=-95 dBm Noise level=-95 dBm
Rx invalid nwid:28 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0Driver looks ok, device disabled
Newer laptops come with features to disable the wireless radio to save battery when not in use. Usually
this is switched by a FN+Fx key combo or specific button for the purpose. It is possible driver and
everything is ok but the wireless device is in the disabled state and can't be used. Using the designated
key(s) in linux sometimes does not work. Usually this is apparent by running the lshw lshw command
you see *-network:1 DISABLED or wireless=radio off, or if you run the iwconfig iwconfig
command you see eth1 NOT READY!. So how do you rectify this? It varies so much the exact solution
can't be put here in this document for all the different models. So...
1. Look at the Ubuntu:LaptopTestingTeam page on the team wiki to see if your laptop is listed with
any information.
2. Do a google search using terms such as manufacture, model, linux, wireless, enable, button,
radio....etc. When searching and finding similar pages that don't help, use words that are used in
those pages to help you search.
3. Go to the ubuntu forums and ask, maybe someone else has the same laptop and knows the work
around.