我将 Ubuntu 11.04 升级到 11.10，但 Wifi 停止工作了。我有一台联想 Z560，它配备了英特尔迅驰无线-N 1000。我搜索了各种有类似问题的帖子以寻求解决方案，但没有成功。wlan0 甚至没有显示在 rfkill 中。请帮我找到解决方案。
下面我给出了各种调试命令的输出。提前致谢。
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.10
DISTRIB_CODENAME=oneiric
DISTRIB_DESCRIPTION="Ubuntu 11.10"
----##uname -a
Linux gurucharapathy-laptop 3.0.0-17-generic-pae #30-Ubuntu SMP Thu Mar 8 17:53:35 UTC 2012 i686 i686 i386 GNU/Linux
----##lspci -nnk | grep -iA2 net
05:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1000 [8086:0084]
Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN [8086:1315]
Kernel modules: iwlagn
06:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
Subsystem: Lenovo Device [17aa:392e]
Kernel driver in use: r8169
----##iw配置
lo no wireless extensions.
eth0 no wireless extensions.
----##iwlist 扫描
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
----##rfkill 列出全部
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
2: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
----##lsmod
Module Size Used by
rfcomm 38408 8
bnep 17923 2
parport_pc 32114 0
ppdev 12849 0
binfmt_misc 17292 1
snd_hda_codec_hdmi 31426 1
snd_hda_codec_conexant 52460 1
uvcvideo 67271 0
videodev 85626 1 uvcvideo
snd_hda_intel 28358 2
snd_hda_codec 91859 3 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel
snd_hwdep 13276 1 snd_hda_codec
joydev 17393 0
snd_pcm 80435 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13132 0
i915 509554 9
drm_kms_helper 32889 1 i915
snd_rawmidi 25241 1 snd_seq_midi
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event
snd_timer 28932 2 snd_pcm,snd_seq
drm 196290 5 i915,drm_kms_helper
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
mei 36466 0
mac80211 393421 0
snd 55902 14 snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
ideapad_laptop 13575 0
intel_ips 17753 0
btusb 18160 2
i2c_algo_bit 13199 1 i915
soundcore 12600 1 snd
bluetooth 148839 23 rfcomm,bnep,btusb
cfg80211 172427 1 mac80211
psmouse 63474 0
serio_raw 12990 0
snd_page_alloc 14108 2 snd_hda_intel,snd_pcm
sparse_keymap 13658 1 ideapad_laptop
wmi 18744 0
video 18908 1 i915
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
ahci 21634 2
libahci 25761 1 ahci
r8169 47200 0
----##nm 工具
NetworkManager Tool
State: asleep
设备：eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unmanaged
Default: no
HW Address: 88:AE:1D:DE:5F:9C
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
----##lshw -C 网络
*-network UNCLAIMED
description: Network controller
product: Centrino Wireless-N 1000
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:05:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:d6400000-d6401fff
*-network
description: Ethernet interface
product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:06:00.0
logical name: eth0
version: 02
serial: 88:ae:1d:de:5f:9c
size: 100Mbit/s
capacity: 100Mbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=N/A ip=192.168.0.100 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:41 ioport:2000(size=256) memory:d2410000-d2410fff memory:d2400000-d240ffff memory:d2420000-d243ffff
答案1
不幸的是，N-1000 系列在 2.6 内核上无法正常工作。目前最好的解决方法是禁用卡的无线 N 连接并仅在 b/g 上运行。这不是最理想的，但它有效。
尝试做
sudo modprobe -r iwlagn
sudo modprobe 11n_disable50=1 11n_disable=1
为了使更改永久生效，请将以下行添加到 /etc/modprobe.d/iwlagn.conf 文件中：
options iwlagn 11n_disable50=1 11n_disable=1
答案2
我不知道解决这个问题的具体方法，但就我朋友的情况而言，他需要输入“rfkill block all && rfkill unblock all”，然后他的 wlan0 就会像魔术一样出现！