我刚刚安装了 Ubuntu 14.04.3 LTS 内核版本 3.19.0-39-generic。
我可以用以太网线连接到互联网。当我切换到固定 IP 无线网络时，计算机就死机了！
我有 Broadcom 的无线网卡 BCM43227。我认为这可能是驱动程序问题，所以我做了以下操作（因为 Broadcom 驱动程序显然有点问题）：
sudo apt-get purge bcmwl-kernel-source broadcom-sta-common broadcom-sta-source
sudo apt-get install b43-fwcutter firmware-b43-installer
但它没有起作用。
我在 Google 上搜索了很多，发现有类似的错误（https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1464738，将内核升级到 3.13.0-66 (14.04) 或 3.19.0-31 (15.04) 后冻结) 最近可能会修复 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1503647/comments/7）。
其中一些错误来自建议的存储库，但我没有激活这些存储库。这个问题仍然是错误吗？还是错误的驱动程序？
任何帮助将不胜感激 ：-）
编辑 1：输出自 lspci -knn | grep Net -A2
02:00.0 Network controller [0280]: Broadcom Corporation BCM43227 802.11b/g/n [14e4:4358]
Subsystem: Foxconn International, Inc. Device [105b:e040]
Kernel driver in use: bcma-pci-bridge
编辑 2：尝试了可能重复的解决方案 安装 Broadcom 无线驱动程序
这意味着运行命令
sudo apt-get install bcmwl-kernel-source
不幸的是，这并没有起到作用。连接无线网络后，系统再次死机。
注意：这是我几个小时前全新安装后安装的相同驱动程序，或者至少我是这样认为的，因为系统设置->软件更新->附加驱动程序说我正在使用专有驱动程序。
编辑3：
启动后，有线和无线连接均已连接。系统无冻结。
拔掉以太网电缆后，无线连接仍然有效。系统无死机。
当我尝试打开浏览器时 ——>> 系统冻结了！:-(
我不知道那是什么意思...有什么想法吗？
编辑 4：日志 cat /var/log/syslog | grep -i network | tail -n25
这是系统冻结之前我所能得到的全部信息（拔下 Eth-Cable 并且浏览器处于打开状态）：
Dec 8 09:03:37 aguilar NetworkManager[996]: <info> Config: set interface ap_scan to 1
Dec 8 09:03:37 aguilar NetworkManager[996]: <info> (eth0): device state change: activated -> unavailable (reason 'carrier-changed')
Dec 8 09:03:37 aguilar NetworkManager[996]: <info> (eth0): deactivating device (reason 'carrier changed')
Dec 8 09:03:37 aguilar NetworkManager[996]: <warn> DNS: plugin dnsmasq update failed
Dec 8 09:03:37 aguilar NetworkManager[996]: <info> Removing DNS information from /sbin/resolvconf
Dec 8 09:03:37 aguilar NetworkManager[996]: <info> NetworkManager state is now CONNECTING
Dec 8 09:03:37 aguilar NetworkManager[996]: <info> (wlan0): supplicant interface state: inactive -> scanning
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> (wlan0): supplicant interface state: scanning -> associating
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> (wlan0): supplicant interface state: associating -> 4-way handshake
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'GOE-WLAN'.
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled.
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started...
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> (wlan0): device state change: config -> ip-config (reason 'none') [50 70 0]
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0) Beginning IP6 addrconf.
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete.
Dec 8 09:03:44 aguilar NetworkManager[996]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) started...
Dec 8 09:03:45 aguilar NetworkManager[996]: <info> (wlan0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Dec 8 09:03:45 aguilar NetworkManager[996]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) complete.
Dec 8 09:03:45 aguilar NetworkManager[996]: <info> (wlan0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Dec 8 09:03:45 aguilar NetworkManager[996]: <info> NetworkManager statte is now CONNECTED_GLOBAL
Dec 8 09:03:45 aguilar NetworkManager[996]: <info> Policy set 'GOE-WLAN' (wlan0) as default for IPv4 routing and DNS
Dec 8 09:03:45 aguilar NetworkManager[996]: <info> Writing DNS information to /sbin/resolvconf
Dec 8 09:03:46 aguilar NetworkManager[996]: <info> Activation (wlan0) successful, device activated
启动后、打开浏览器之前登录：
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network 'GOE-WLAN'.
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled.
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started...
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> (wlan0): device state change: config -> ip-config (reason 'none') [50 70 0]
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0) Beginning IP6 addrconf.
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete.
Dec 8 09:07:11 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) started...
Dec 8 09:07:12 aguilar NetworkManager[838]: <info> (wlan0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Dec 8 09:07:12 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 5 of 5 (IPv4 Commit) complete.
Dec 8 09:07:12 aguilar NetworkManager[838]: <warn> error monitoring device for netlink events: error processing netlink message: Object busy
Dec 8 09:07:12 aguilar NetworkManager[838]: <info> (wlan0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Dec 8 09:07:13 aguilar NetworkManager[838]: <info> Writing DNS information to /sbin/resolvconf
Dec 8 09:07:13 aguilar NetworkManager[838]: <info> Activation (wlan0) successful, device activated.
Dec 8 09:07:12 aguilar NetworkManager[838]: <info> WiFi hardware radio set enabled
Dec 8 09:07:23 aguilar NetworkManager[838]: <warn> error monitoring device for netlink events: error processing netlink message: Object busy
Dec 8 09:07:24 aguilar NetworkManager[838]: <info> (eth0): IP6 addrconf timed out or failed.
Dec 8 09:07:24 aguilar NetworkManager[838]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Dec 8 09:07:24 aguilar NetworkManager[838]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Dec 8 09:07:24 aguilar NetworkManager[838]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Dec 8 09:07:30 aguilar NetworkManager[838]: <info> (wlan0): IP6 addrconf timed out or failed.
Dec 8 09:07:30 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Dec 8 09:07:30 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Dec 8 09:07:30 aguilar NetworkManager[838]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
答案1
您需要安装专有驱动程序。运行：
sudo apt-get install bcmwl-kernel-source
没什么问题。你只是没有安装正确的驱动程序。