笔记本安装Ubuntu系统后的wifi问题。。。大神救我。

[wqzds]

根本没有wifi那个选项。。

[vickycq]

执行以下指令将结果全部复制贴上来

代码： 全选

uname -a
cat /etc/issue
lspci -knn | grep -iA2 net
lsusb
sudo lshw -numeric -C net

[wqzds]

vickycq,

代码： 全选

fear@fear-Inspiron-3543:~$ uname -a
Linux fear-Inspiron-3543 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
fear@fear-Inspiron-3543:~$ cat /etc/issue
Ubuntu 16.04.1 LTS \n \l

fear@fear-Inspiron-3543:~$ lspci -knn | grep -iA2 net
06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
	Kernel modules: bcma, wl
07:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07)
	Subsystem: Dell RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [1028:0655]
	Kernel driver in use: r8169
	Kernel modules: r8169
fear@fear-Inspiron-3543:~$ lsusb
Bus 001 Device 006: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 005: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
Bus 001 Device 004: ID 0c45:670b Microdia 
Bus 001 Device 007: ID 12d1:107c Huawei Technologies Co., Ltd. 
Bus 001 Device 002: ID 8087:8001 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
fear@fear-Inspiron-3543:~$ sudo lshw -numeric -C net
[sudo] fear 的密码： 
  *-network UNCLAIMED     
       description: Network controller
       product: BCM43142 802.11b/g/n [14E4:4365]
       vendor: Broadcom Corporation [14E4]
       physical id: 0
       bus info: pci@0000:06:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: memory:ab200000-ab207fff
  *-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10EC:8136]
       vendor: Realtek Semiconductor Co., Ltd. [10EC]
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 07
       serial: 20:47:47:3e:a3:a7
       size: 10Mbit/s
       capacity: 100Mbit/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 autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:47 ioport:4000(size=256) memory:ab100000-ab100fff memory:d2100000-d2103fff
  *-network
       description: Ethernet interface
       physical id: 2
       logical name: enp0s29u1u3
       serial: 02:68:4a:51:46:50
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.32 link=yes multicast=yes

[DreamNiu]

我昨天刚解决这个问题，我也是刚学的新手。
没有wifi选项的原因是刚安装的系统默认没有无线网卡驱动，解决方式是：
1.用手机开热点，用USB（或蓝牙）连接到电脑上，这样电脑才能上网（如果你的电脑能上网就忽略这一步）
2.电脑搜索‘软件和更新’，点击--开发者选项，在‘提前释放出的更新’前打钩，应该需要输入密码
3.点击--附加驱动，联网状态下会自动搜索是否有可用的新驱动，搜索完毕后会自动下载，然后选择使用Broadcom 802.11 Linux STA wireless driver source 来自.....
大功告成，这样就能有WiFi选项了。
祝好运。如有问题，欢迎一起交流 ，email：dreamniu5513@foxmail.com

[wqzds]

DreamNiu, 没用

[vickycq]

没用

有无执行 DreamNiu 描述的步骤
若已采取了 DreamNiu 描述的步骤，先重新启动计算机
若重新启动计算机后仍无法使用，执行以下指令将结果全部复制贴上来

代码： 全选

dpkg -l | grep "bcmwl\|broadcom-sta"
lsmod | grep "wl\|brcm\|bcma"
sudo lshw -C net
grep -Ri "b43" /etc/modprobe.d

[wqzds]

vickycq,

代码： 全选

king@king-Inspiron-3543:~$ dpkg -l | grep "bcmwl\|broadcom-sta"
ii  bcmwl-kernel-source                        6.30.223.248+bdcom-0ubuntu8                                 amd64        Broadcom 802.11 Linux STA wireless driver source
king@king-Inspiron-3543:~$ lsmod | grep "wl\|brcm\|bcma"
king@king-Inspiron-3543:~$ sudo lshw -C net
[sudo] king 的密码： 
对不起，请重试。
[sudo] king 的密码： 
  *-network UNCLAIMED     
       description: Network controller
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:06:00.0
       version: 01
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress cap_list
       configuration: latency=0
       resources: memory:ab200000-ab207fff
  *-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 07
       serial: 20:47:47:3e:a3:a7
       size: 10Mbit/s
       capacity: 100Mbit/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 autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:47 ioport:4000(size=256) memory:ab100000-ab100fff memory:d2100000-d2103fff
  *-network
       description: Ethernet interface
       physical id: 2
       logical name: enp0s29u1u3
       serial: 02:68:4a:51:46:50
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.32 link=yes multicast=yes

重启之后黑屏，然后重装了。又用了他的办法，无效。

[vickycq]

ii bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu8
重启之后黑屏

若主板采用 UEFI，确保 Secure Boot 处于关闭状态。
尝试执行 sudo modprobe wl 看是否提示 "Required key not available"？

[wqzds]

vickycq, 對。

[wqzds]

vickycq, 然后呢?

[vickycq]

vickycq, 然后呢?

8楼正文第一行已有说明。
即：若出现8楼第二行的现象，按8楼第一行所述处理
对于表述不清造成的误会表示抱歉

[wqzds]

vickycq, 打扰了，多谢帮助，感谢！