Wifi 随机连接,UI 无响应

Wifi 随机连接,UI 无响应

我在工作时无法连接 Wi-Fi。以下是症状:

  • 当我连接时,它通常会成功(大约 75% 的时间)。
  • 当我连接时,连接保持在线约 15 分钟到 45 分钟,然后断开几分钟,有时会更长,然后重复。
  • 当我断开连接时,信号条是满的(而当我连接时,信号条有 3/4 格)。
  • 大多数时候我无法控制 wifi UI(在 wifi 下拉菜单中,单击断开连接除了关闭菜单外什么也不做,选择另一个网络什么也不做,“其他网络”子菜单是空的并显示一个小框。
  • 有些网络比其他网络更不稳定

我无法尝试插入以太网,因为在工作场所无法使用。在家里,我有时会遇到这个问题,但这种情况非常罕见(大约 5% 的时间)在家里,我连接以太网时遇到类似的问题。

所以我猜测我的以太网/wifi 驱动程序有问题,但我不知道如何在 ubuntu 上排除故障。

我之前在这台机器上安装的是 Windows 7 操作系统,从来没有遇到过这样的问题。工作中没有其他人遇到过这样的问题。

我的系统是最新的(更新管理器说没有要安装的更新)我的操作系统:ubuntu 12.04 LTS,32 位硬件:三星 9 系列 15 英寸,NP900X4C

我已经习惯了使用随机断开的连接,但当我真正需要它时,它却时常会断开更长时间。所以我会尝试修复它。

您能否指导一下调试过程,因为我不知道如何在这个系统上进行调试?


也许这有帮助:

    $ nm-tool

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        E8:03:9A:AB:A8:69

  Capabilities:
    Carrier Detect:  yes
    Speed:           100 Mb/s

  Wired Properties
    Carrier:         off


- Device: wlan0  [Wifi_Neuilly_LAB] --------------------------------------------
  Type:              802.11 WiFi
  Driver:            iwlwifi
  State:             connected
  Default:           yes
  HW Address:        C4:85:08:0C:41:3A

  Capabilities:
    Speed:           6 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    FreeWifi_secure: Infra, 62:98:5C:C9:44:F6, Freq 2462 MHz, Rate 54 Mb/s, Strength 49 WPA Enterprise
    freeboxf2i:      Infra, 62:98:5C:C9:44:F4, Freq 2462 MHz, Rate 54 Mb/s, Strength 47 WPA
    FreeWifi_secure: Infra, D2:34:1A:95:65:C2, Freq 2462 MHz, Rate 54 Mb/s, Strength 30 WPA Enterprise
    FreeboxELYOR:    Infra, D2:34:1A:95:65:C0, Freq 2462 MHz, Rate 54 Mb/s, Strength 35 WEP
    FreeWifi:        Infra, 62:98:5C:C9:44:F5, Freq 2462 MHz, Rate 54 Mb/s, Strength 49
    FreeWifi:        Infra, D2:34:1A:95:65:C1, Freq 2462 MHz, Rate 54 Mb/s, Strength 35
    Wifi_Neuilly_Ville: Infra, 00:1A:1E:08:4A:60, Freq 2437 MHz, Rate 54 Mb/s, Strength 54 WPA2 Enterprise
    Wifi_Neuilly_LAB:Infra, 00:1A:1E:08:4A:61, Freq 2437 MHz, Rate 54 Mb/s, Strength 52
    Wifi_Neuilly_LAB:Infra, 00:1A:1E:0A:78:61, Freq 2437 MHz, Rate 54 Mb/s, Strength 70
    ALCYANESAS:      Infra, 00:1B:2F:00:7D:AC, Freq 2472 MHz, Rate 54 Mb/s, Strength 40 WPA WPA2
    Wifi_Neuilly_Ville: Infra, 00:1A:1E:0A:78:60, Freq 2437 MHz, Rate 54 Mb/s, Strength 80 WPA2 Enterprise
    Wifi_Neuilly_LAB:Infra, 00:1A:1E:08:44:A1, Freq 2462 MHz, Rate 54 Mb/s, Strength 27
    default:         Infra, 00:50:7F:AC:31:70, Freq 2412 MHz, Rate 54 Mb/s, Strength 35 WPA
    Wifi_Neuilly_Ville: Infra, 00:1A:1E:08:44:A0, Freq 2462 MHz, Rate 54 Mb/s, Strength 32 WPA2 Enterprise
    IEF2I:           Infra, 00:50:7F:AC:31:71, Freq 2412 MHz, Rate 54 Mb/s, Strength 37 WPA2
    *Wifi_Neuilly_LAB: Infra, 00:1A:1E:0A:78:69, Freq 5700 MHz, Rate 54 Mb/s, Strength 77
    Wifi_Neuilly_Ville: Infra, 00:1A:1E:FD:5B:20, Freq 2412 MHz, Rate 54 Mb/s, Strength 40 WPA2 Enterprise
    Wifi_Neuilly_Ville: Infra, 00:1A:1E:08:4A:68, Freq 5500 MHz, Rate 54 Mb/s, Strength 39 WPA2 Enterprise
    Wifi_Neuilly_LAB:Infra, 00:1A:1E:FD:5B:21, Freq 2412 MHz, Rate 54 Mb/s, Strength 37
    Wifi_Neuilly_LAB:Infra, 00:1A:1E:08:4A:69, Freq 5500 MHz, Rate 54 Mb/s, Strength 37
    NEUF_FB60:       Infra, 00:25:15:53:FB:64, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA
    SFR WiFi Public: Infra, B2:25:15:53:FB:65, Freq 2462 MHz, Rate 54 Mb/s, Strength 30
    Wifi_Neuilly_Ville: Infra, 00:1A:1E:FD:5B:28, Freq 5240 MHz, Rate 54 Mb/s, Strength 42 WPA2 Enterprise
    Wifi_Neuilly_LAB:Infra, 00:1A:1E:FD:5B:29, Freq 5240 MHz, Rate 54 Mb/s, Strength 42

  IPv4 Settings:
    Address:         172.20.2.26
    Prefix:          24 (255.255.255.0)
    Gateway:         172.20.2.254

    DNS:             172.20.2.254

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