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在 Ubuntu 16.04 中，即使多次尝试修复，无线连接仍然断开

tag-icon • tag-icon networking wireless network-manager
在 Ubuntu 16.04 中，即使多次尝试修复，无线连接仍然断开

我是刚接触 Ubuntu 几天的新手，所以我对大多数编程几乎一无所知。我一直在尝试设置我的无线网络，但似乎什么都没用。有关更多信息，我有一台 G750JM 笔记本电脑。我从中安装了驱动程序Additional Drivers。Software & Updates我使用命令lspci检查我的网络控制器并得到

Broadcom Limited BCM4352 802.11ac Wireless Network Adapter (rev 03)

但当我检查连接时iwconfig

lo        no wireless extensions.

enp4s0    no wireless extensions.

我得到了这个输出。我关注了这个视频 https://www.youtube.com/watch?v=nlLS8d4Z09cservice network-manager restart但这并没有帮助。接下来，我找到了我在 中找到的 命令askUbuntu。网络显示无线网络已断开连接，似乎试图重新连接但没有成功，这表明网络已恢复正常。我按照 Ask Ubuntu 上的更多说明操作，这些说明也没有帮助，尽管它们写得非常专业，而且易于理解。

那是一个 安装 Broadcom 无线驱动程序

该命令nmcli dev给出输出

enp4s0  ethernet  connected  Wired connection 1 
lo      loopback  unmanaged  --

当我使用命令时，sudo lshw -C network我得到输出

*-network UNCLAIMED     
       description: Network controller
       product: BCM4352 802.11ac Wireless Network Adapter
       vendor: Broadcom Limited
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 03
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:eda00000-eda07fff memory:ed800000-ed9fffff
  *-network
       description: Ethernet interface
       product: QCA8171 Gigabit Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: enp4s0
       version: 10
       serial: 40:16:7e:0e:87:0f
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=alx duplex=full ip=192.168.0.3 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:33 memory:edb00000-edb3ffff ioport:d000(size=128)

然后我用了这个问题的第一个答案 如何安装软件或从旧的不受支持的版本升级？

Reading package lists... Done
W: The repository 'http://old-releases.ubuntu.com/ubuntu xenial Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://old-releases.ubuntu.com/ubuntu xenial-updates Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://old-releases.ubuntu.com/ubuntu xenial-backports Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://old-releases.ubuntu.com/ubuntu xenial-security Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://old-releases.ubuntu.com/ubuntu/dists/xenial/multiverse/source/Sources  404  Not Found
E: Failed to fetch http://old-releases.ubuntu.com/ubuntu/dists/xenial-updates/multiverse/source/Sources  404  Not Found
E: Failed to fetch http://old-releases.ubuntu.com/ubuntu/dists/xenial-backports/main/source/Sources  404  Not Found
E: Failed to fetch http://old-releases.ubuntu.com/ubuntu/dists/xenial-security/multiverse/binary-amd64/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.

然后我使用了第二个答案，但还是没有结果。

我的问题是，如何确保我的无线网络保持正常工作？

感谢您的阅读。

答案1

我的旧 HP 笔记本电脑上有很多无线问题。最后我放弃并禁用了内部卡（某种组合蓝牙/wifi 卡）。现在使用 TP-Link 加密狗，它工作正常。如果您需要蓝牙，这不是解决方案，除非您能找到可以做到这一点的加密狗。这个没有可用的 Linux 驱动程序，但它仍然可以工作，开箱即用，无需安装任何新驱动程序。希望这对您有所帮助。

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