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联想 T431s 和无线连接效果不佳

tag-icon • tag-icon 12.04 wireless intel-wireless
联想 T431s 和无线连接效果不佳

我刚刚拆开 lenovo T431s 的包装，安装了 ubuntu 12.04.2。一切顺利，但无线网络始终没有出现。我在有线连接上使用 NM 正确地拉动 aa dhcp，但ifconfig根本没有显示 wlan0。

我在网上搜索了一下，最终从英特尔网站下载了 Linux 固件，但检查文件是否与md5sum已有的文件/lib/firmware相符。

如果有帮助的话我很乐意发布其他命令的输出，但 lspci 和 lshw 在下面。

jth@t431s:~$ sudo lspci -nnkv | grep -A 10 Centrino
03:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6235 [8086:088f] (rev 24)
        Subsystem: Intel Corporation Device [8086:5260]
        Flags: bus master, fast devsel, latency 0, IRQ 10
        Memory at f0c00000 (64-bit, non-prefetchable) [size=8K]
        Capabilities: [c8] Power Management version 3
        Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
        Capabilities: [e0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [140] Device Serial Number 08-d4-0c-ff-ff-00-03-ed

jth@t431s:~$ sudo lshw -C network
  *-network               
       description: Ethernet interface
       product: 82579LM Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eth0
       version: 04
       serial: 3c:97:0e:92:d6:a1
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.0.0-k duplex=full firmware=0.13-3 ip=166.100.1.128 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:42 memory:f1500000-f151ffff memory:f153b000-f153bfff ioport:4080(size=32)
  *-network UNCLAIMED
       description: Network controller
       product: Centrino Advanced-N 6235
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 24
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:f0c00000-f0c01fff

根据第一条评论，所述命令的输出（modprobe 没有输出）：

jth@t431s:~$ sudo modprobe iwlwifi
jth@t431s:~$ dmesg | grep iwl
[    2.713720] iwlwifi: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:
[    2.713723] iwlwifi: Copyright(c) 2003-2012 Intel Corporation
jth@t431s:~$ rfkill list all
0: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
jth@t431s:~$ 

jth@t431s:~$ modinfo iwlwifi | grep 088F
alias:          pci:v00008086d0000088Fsv*sd00004260bc*sc*i*
jth@t431s:~$

可以找到请求的命令的完整输出这里

运行的命令是：

jth@t431s:~$ dmesg > justin.txt
jth@t431s:~$ lsmod >> justin.txt
jth@t431s:~$ cat /var/log/syslog | grep iwl >> justin.txt

答案1

为了后代：

问题不在于内核，而在于iwlwifi驱动程序。Ubuntu 内核贡献者之一提供的自定义补丁解决了该问题，最终将包含在补丁中……

我暂时把它放在了我的 Dropbox 上这里

安装

dpkg -i wireless-iwlwifi-precise-dkms_3.6precise1sutton5_all.deb

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