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无线连接突然断开 Intel 3945ABG

tag-icon • tag-icon networking drivers lubuntu network-manager 17.10
无线连接突然断开 Intel 3945ABG

我有一台旧的东芝 SATELLITE L350-150 笔记本电脑，配有英特尔® PRO/Wireless 3945ABG 网卡。

我使用 mkusb 创建了一个装有 Lubuntu 17.10 的持久 USB 记忆棒。

启动操作系统时一切正常，无线连接也正常，直到突然断线。网络管理器显示“设备未准备好”。

这最新固件使用 15.32.2.9（参见 lshw 输出）。

任何想法如何解决这一问题？

故障排除

没有解决问题

sudo service network-manager restart

sudo modprobe -r iwl3945 && sudo modprobe iwl3945

以下是一些输出：

网络管理员

lubuntu@lubuntu:~$ sudo service network-manager status 

● NetworkManager.service - Network Manager
   Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2018-03-02 18:15:05 CET; 32min ago
     Docs: man:NetworkManager(8)
 Main PID: 1503 (NetworkManager)
    Tasks: 4 (limit: 4915)
   CGroup: /system.slice/NetworkManager.service
           └─1503 /usr/sbin/NetworkManager --no-daemon

mrt 02 18:47:13 lubuntu NetworkManager[1503]: <info>  [1520012833.5817] device (wlp3s0): supplicant interface state: starting -> down
mrt 02 18:47:23 lubuntu NetworkManager[1503]: <warn>  [1520012843.6283] device (wlp3s0): re-acquiring supplicant interface (#1).
mrt 02 18:47:24 lubuntu NetworkManager[1503]: <error> [1520012844.1776] sup-iface[0x55e96410c5c0,wlp3s0]: error adding interface: wpa_supplicant couldn't grab this interface.
mrt 02 18:47:24 lubuntu NetworkManager[1503]: <info>  [1520012844.1777] device (wlp3s0): supplicant interface state: starting -> down
mrt 02 18:47:34 lubuntu NetworkManager[1503]: <warn>  [1520012854.6367] device (wlp3s0): re-acquiring supplicant interface (#2).
mrt 02 18:47:35 lubuntu NetworkManager[1503]: <error> [1520012855.1842] sup-iface[0x55e96410c2a0,wlp3s0]: error adding interface: wpa_supplicant couldn't grab this interface.
mrt 02 18:47:35 lubuntu NetworkManager[1503]: <info>  [1520012855.1843] device (wlp3s0): supplicant interface state: starting -> down
mrt 02 18:47:45 lubuntu NetworkManager[1503]: <warn>  [1520012865.6367] device (wlp3s0): re-acquiring supplicant interface (#3).
mrt 02 18:47:46 lubuntu NetworkManager[1503]: <error> [1520012866.1907] sup-iface[0x55e96406b530,wlp3s0]: error adding interface: wpa_supplicant couldn't grab this interface.
mrt 02 18:47:46 lubuntu NetworkManager[1503]: <info>  [1520012866.1907] device (wlp3s0): supplicant interface state: starting -> down

串行通信

lubuntu@lubuntu: lspci 
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)

瘦身

lubuntu@lubuntu:~$ sudo lshw -class network
  *-network DISABLED
       description: Wireless interface
       product: PRO/Wireless 3945ABG [Golan] Network Connection
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 02
       serial: 00:1f:3c:8a:71:54
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwl3945 driverversion=4.13.0-21-generic firmware=15.32.2.9 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:27 memory:d4300000-d4300fff

杀戮

lubuntu@lubuntu:~$ rfkill list all
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

消息

[ 1976.616299] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 1978.103671] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[ 1978.117286] r8169 0000:02:00.0 enp2s0: link down
[ 1978.117386] IPv6: ADDRCONF(NETDEV_UP): enp2s0: link is not ready
[ 1978.120365] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 1978.168538] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 1978.168548] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 1978.215241] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 1978.215247] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 1978.261955] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 1978.261960] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 1978.308659] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 1978.308665] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 1978.355358] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 1978.355362] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 1978.392715] iwl3945 0000:03:00.0: Unable to initialize device after 5 attempts.

答案1

禁用省电功能即可解决问题。

sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*

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