我无法让我的 WLAN 为我的 Sony Vaio 型号工作，VPCF23C5E
从 Windows、智能手机等进行连接没有问题。
$ sudo lshw -C network; lsb_release -a; uname -a; sudo rfkill list; dmesg | grep -i firm
*-network
description: Wireless interface
product: AR9485 Wireless Network Adapter
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 01
serial: 64:27:37:92:99:0f
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=3.2.0-29-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:16 memory:f7000000-f707ffff memory:f7080000-f708ffff
*-network
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:05:00.0
logical name: eth0
version: 06
serial: f0:bf:97:dd:b2:bd
size: 1Gbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-1.fw ip=192.168.1.4 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
resources: irq:50 ioport:9000(size=256) memory:e2104000-e2104fff memory:e2100000-e2103fff
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
Linux siriedit 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
[ 1.287449] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
[ 18.273582] [Firmware Bug]: ACPI(NGFX) defines _DOD but not _DOS
看到了一些建议的解决方案，例如Sony VAIO E系列无法启用无线网络但那里的答案并不能解决我的问题......
我没什么主意了 :-( 我还能检查什么？
更新
$ ifconfig -a
eth0 Link encap:Ethernet HWaddr f0:bf:97:dd:b2:bd
inet addr:192.168.1.4 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::f2bf:97ff:fedd:b2bd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5072 errors:0 dropped:0 overruns:0 frame:0
TX packets:4444 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4568435 (4.5 MB) TX bytes:610624 (610.6 KB)
Interrupt:50 Base address:0xc000
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:1498 errors:0 dropped:0 overruns:0 frame:0
TX packets:1498 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:114156 (114.1 KB) TX bytes:114156 (114.1 KB)
wlan0 Link encap:Ethernet HWaddr 64:27:37:92:99:0f
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::6627:37ff:fe92:990f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1277 errors:0 dropped:0 overruns:0 frame:0
TX packets:472 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:483155 (483.1 KB) TX bytes:61031 (61.0 KB)
答案1
借助google的力量解决了问题：
解决方案概述如下：
http://ubuntuforums.org/showthread.php?t=1983003
http://www.emmolution.org/?p=253
http://pleph.appspot.com/init/posts/view/2657865
简短解决方案：
sudo vim /etc/modprobe.d/ath9k.conf
添加
options ath9k nohwcrypt=1
并重新启动。