安装ubuntu后，HP电脑无线网卡开关无效

特别特别特别感谢 默默忆 解决了困扰我很长时间的问题：谢谢您

http://momoyi.info/wordpress/2011/05/12/%E5%AE%89%E8%A3%85ubuntu%E5%90%8E%EF%BC%8Chp%E7%94%B5%E8%84%91%E6%97%A0%E7%BA%BF%E7%BD%91%E5%8D%A1/

转自国外网站，赶紧收藏了

Wifi stops to work on Arch Linux

Today, my wifi stops work! Wicd is no longer detect any wifi network!
The first thing, i check ifconfig

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[kurei@axcoto ~]$ ifconfig eth0 Link encap:Ethernet HWaddr 00:1F:16:5D:A5:01 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21f:16ff:fe5d:a501/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3743 errors:0 dropped:0 overruns:0 frame:0 TX packets:4386 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2778914 (2.6 Mb) TX bytes:699729 (683.3 Kb) Interrupt:27 Base address:0xe000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:7529 errors:0 dropped:0 overruns:0 frame:0 TX packets:7529 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:293591 (286.7 Kb) TX bytes:293591 (286.7 Kb)

Okay, no wireless card is up, check ifconfig -a

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[kurei@axcoto ~]$ ifconfig -a eth0 Link encap:Ethernet HWaddr 00:1F:16:5D:A5:01 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21f:16ff:fe5d:a501/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3771 errors:0 dropped:0 overruns:0 frame:0 TX packets:4421 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2785823 (2.6 Mb) TX bytes:711472 (694.7 Kb) Interrupt:27 Base address:0xe000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:7529 errors:0 dropped:0 overruns:0 frame:0 TX packets:7529 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:293591 (286.7 Kb) TX bytes:293591 (286.7 Kb) vboxnet0 Link encap:Ethernet HWaddr 0A:00:27:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) wlan0 Link encap:Ethernet HWaddr 00:24:2B:17:2E:2F UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

So, everything’s good!
I tried to make it up!

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[kurei@axcoto ~]$ [kurei@axcoto ~]$ sudo ifconfig wlan0 up Password: SIOCSIFFLAGS: Operation not possible due to RF-kill

Shame on me, i even don’t know what RF-kill is!
Okay, i do a google and found rfkill! Install it

Then check :

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[kurei@axcoto ~]$ rfkill list 0: hp-wifi: Wireless LAN Soft blocked: yes Hard blocked: yes 1: phy0: Wireless LAN Soft blocked: no Hard blocked: yes

i found that Hard blocked is when you turn off wifi button on laptop!
Soft blocked seems come from something like driver/module…I don’t know!
Any way, unblock it!

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1 2	[kurei@axcoto ~]$ sudo rfkill unblock 0 [kurei@axcoto ~]$ sudo rfkill unblock 1

And now, wlan up just work fine

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1	[kurei@axcoto ~]$ sudo ifconfig wlan0 up

Next, i restart system! Ooops, it get soft blocked again after reboot!
So, i guess need some flag in booting process to let system know that don’t block it!
Google is friend, i found need to add

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1	options ath_pci rfkill=0

to /etc/modprobe.d/modprobe.conf
Okay, reboot, work!
WiCD can’t detect wireless network now!