Ubuntu中文论坛

发表于： **2014-10-09 10:14**

我的笔记本在开机连上 wifi 过段时间由于信号不稳定断网后，无法再次重连。已做如下尝试均无效：
1. 注销
2. 重启 networking 服务
3. 关闭重新开启硬件开关

我现在只能重新启动才能再次联网。

谢谢帮忙！

发表于： **2014-10-09 12:13**

把下面指令複製貼進終端機執行
1. sudo lshw -numeric -class network
2. sudo ifconfig -a
3. sudo route -nv
4. sudo rfkill list all
把結果直接複製貼上來

发表于： **2014-10-21 23:26**

抱歉，这个问题一直无法重现，今天又出现了。

代码：全选

# lshw -numeric -class network
 *-network               
       description: Wireless interface
       product: AR9285 Wireless Network Adapter (PCI-Express) [168C:2B]
       vendor: Qualcomm Atheros [168C]
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 01
       serial: 48:5d:60:c1:8f:b5
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=3.13.0-37-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
       resources: irq:17 memory:ddc00000-ddc0ffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10EC:8168]
       vendor: Realtek Semiconductor Co., Ltd. [10EC]
       physical id: 0
       bus info: pci@0000:05:00.0
       logical name: eth0
       version: 06
       serial: 54:04:a6:3a:8e:2a
       size: 10Mbit/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=half firmware=rtl_nic/rtl8168e-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:46 ioport:9000(size=256) memory:d2104000-d2104fff memory:d2100000-d2103fff



# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 54:04:a6:3a:8e:2a  
          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)

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:65536  Metric:1
          RX packets:20273 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20273 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:21631053 (21.6 MB)  TX bytes:21631053 (21.6 MB)

wlan0     Link encap:Ethernet  HWaddr 48:5d:60:c1:8f:b5  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:777267 errors:0 dropped:0 overruns:0 frame:0
          TX packets:17049 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:122185013 (122.1 MB)  TX bytes:2395463 (2.3 MB)




# route -nv
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface




# rfkill list all
0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: asus-wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no

下面是 /var/log/syslog 的输出（我重新开启和关闭wifi硬件开关）：

Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> wpa_supplicant stopped
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: inactive -> down
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0): device state change: disconnected -> unavailable (reason 'supplicant-failed') [30 20 10]
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0): deactivating device (reason 'supplicant-failed') [10]
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> wpa_supplicant started
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0) supports 4 scan SSIDs
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <warn> Trying to remove a non-existant call id.
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0) supports 4 scan SSIDs
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0) supports 4 scan SSIDs
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: starting -> ready
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <warn> Trying to remove a non-existant call id.
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: ready -> disconnected
Oct 21 18:01:29 my-ubuntu NetworkManager[983]: <info> (wlan0) supports 4 scan SSIDs
Oct 21 18:01:32 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: disconnected -> inactive
Oct 21 18:01:38 my-ubuntu NetworkManager[983]: <info> WiFi now disabled by radio killswitch
Oct 21 18:01:38 my-ubuntu NetworkManager[983]: <info> (wlan0): device state change: disconnected -> unavailable (reason 'none') [30 20 0]
Oct 21 18:01:38 my-ubuntu NetworkManager[983]: <info> (wlan0): deactivating device (reason 'none') [0]
Oct 21 18:01:39 my-ubuntu NetworkManager[983]: <info> WiFi now enabled by radio killswitch
Oct 21 18:01:39 my-ubuntu NetworkManager[983]: <info> (wlan0): bringing up device.
Oct 21 18:01:40 my-ubuntu NetworkManager[983]: <info> wpa_supplicant die count reset
Oct 21 18:01:41 my-ubuntu NetworkManager[983]: <info> (wlan0) supports 4 scan SSIDs
Oct 21 18:01:41 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: starting -> ready
Oct 21 18:01:41 my-ubuntu NetworkManager[983]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Oct 21 18:01:41 my-ubuntu NetworkManager[983]: <warn> Trying to remove a non-existant call id.
Oct 21 18:01:41 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: ready -> disconnected
Oct 21 18:01:41 my-ubuntu NetworkManager[983]: <info> (wlan0) supports 4 scan SSIDs
Oct 21 18:01:45 my-ubuntu NetworkManager[983]: <info> (wlan0): supplicant interface state: disconnected -> inactive

发表于： **2014-10-22 7:53**

ifconfig -a
eth0 Link encap:Ethernet HWaddr 54:04:a6:3a:8e:2a
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)
wlan0 Link encap:Ethernet HWaddr 48:5d:60:c1:8f:b5
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:777267 errors:0 dropped:0 overruns:0 frame:0
TX packets:17049 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:122185013 (122.1 MB) TX bytes:2395463 (2.3 MB)

在測試無線網卡時把有線網卡關閉以免搗亂
從 Bios 關閉有線網卡
或者
從連線設定處把自動連線打勾取消
然後重新開機
看看結果有沒有不同

lshw -numeric -class network
product: AR9285 Wireless Network Adapter (PCI-Express) [168C:2B]
configuration: broadcast=yes driver=ath9k driverversion=3.13.0-37-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn

只有一個實體無線網卡

# rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: asus-wlan: Wireless LAN
Soft blocked: no
Hard blocked: no

兩個無線界面 ?
如果確實只有一個無線網卡要檢查是否有兩個無線網卡驅動把其中一個不合適的列入載入黑名單

product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10EC:8168]
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8168e-2.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s

r8169 不是合適的驅動
http://forum.ubuntu.org.cn/viewtopic.ph ... 8#p3102888
測試有線網卡時把無線網卡關閉以免搗亂

product: AR9285 Wireless Network Adapter (PCI-Express) [168C:2B]
configuration: broadcast=yes driver=ath9k driverversion=3.13.0-37-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn

AR9285 無線網卡驅動參閱
http://forum.ubuntu.org.cn/viewtopic.ph ... 6#p3072866
http://wireless.kernel.org/en/users/Drivers/ath9k
http://206.17.82.2/zh_TW/downloads/deta ... D=DS010294
http://drvbp1.linux-foundation.org/~mcg ... backports/

如果一直有問題
uname -r
看看你的 Linux kernel 版本
跟
driverversion=3.13.0-37-generic
版本是偶相符
如果不符
更新你的 driverversion 版本
http://drvbp1.linux-foundation.org/~mcg ... backports/

Ubuntu中文论坛

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