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ubuntu 18.04 出现 wifi 和蓝牙问题

tag-icon • tag-icon wireless 18.04 bluetooth iwlwifi ubuntu-drivers
ubuntu 18.04 出现 wifi 和蓝牙问题

在我的笔记本电脑 Dell Vostro 14 3445 上，我遇到了启动 wifi 和蓝牙的问题。

我不认为这是我的笔记本电脑的硬件问题，因为在我切换到 Ubuntu 18.04 之前，它可以在 Windows 操作系统上运行。我尝试了网上提供的大量解决方案来解决这个问题，但最终我认为我必须针对我的机器提出这个问题。不确定我的机器与其他能够修复机器的机器有何不同。

Linux 头版本是 linux-headers-4.15.0-42

以下是有关我的系统组件的一些信息：

$lspci -nnk | grep -iA3 net; lsusb; rfkill list; uname -r; dmesg | egrep -i 'blue|firm'

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 0c)
Subsystem: Dell RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1028:0682]
Kernel driver in use: r8169
Kernel modules: r8169
03:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
Kernel driver in use: bcma-pci-bridge
Kernel modules: bcma
Bus 002 Device 005: ID 064e:9205 Suyin Corp. 
Bus 002 Device 004: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
Bus 002 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 12d1:108a Huawei Technologies Co., Ltd. 
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 413c:2113 Dell Computer Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
4.15.0-42-generic
[    0.064453] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    2.396427] [drm] Found UVD firmware Version: 1.64 Family ID: 9
[    2.398434] [drm] Found VCE firmware/feedback version 40.2.2 / 15!
[   24.332467] Bluetooth: Core ver 2.22
[   24.332506] Bluetooth: HCI device and connection manager initialized
[   24.332512] Bluetooth: HCI socket layer initialized
[   24.332515] Bluetooth: L2CAP socket layer initialized
[   24.332524] Bluetooth: SCO socket layer initialized
[   70.312690] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   70.312694] Bluetooth: BNEP filters: protocol multicast
[   70.312704] Bluetooth: BNEP socket layer initialized

请帮忙，提前谢谢。

$ dkms status
bcmwl, 6.30.223.271+bdcom, 4.15.0-42-generic, x86_64: installed
btusb, 4.0, 4.15.0-42-generic, x86_64: installed

解决方案

我找到了答案。我查看了很多帖子来解决这个问题。

我尝试这样做：

enabled wifi adapter from Software & updates -> additional Drivers -> [select the dirver] -> Click on 'Apply changes'

然后：

sudo apt-get update
sudo apt-get --reinstall install bcmwl-kernel-source

然后：

disabled `secure boot` from `bios`

然后：

Reboot the system.

我看到这个东西起作用了

答案1

我找到了答案。我查看了很多帖子来解决这个问题。我尝试这样做：从软件和更新 -> 附加驱动程序 -> [选择驱动程序] -> 单击“应用更改”启用 wifi 适配器，然后：sudo apt-get update sudo apt-get --reinstall install bcmwl-kernel-source 然后从 bios 禁用安全启动，然后：重新启动系统。我看到这些东西正在工作

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