我在 HP OMEN 15(2017) 笔记本电脑上安装了 Ubuntu 17.04，发现 wifi 卡无法正常工作。我遵循了我的 WiFi 适配器完全不工作，如何排除故障？| 询问 Ubuntu 我发现wifi卡id是Realtek 10ec:b822。
我在这些网站上找到了一些信息：
产品信息网站：RTL8822BE | Realtek.com
适用于 Windows 的驱动程序：适用于 Windows 10（64 位）的 Realtek RTL8822BE 无线局域网驱动程序 | support.lenovo.com
########## wireless info START ##########
Report from: 17 Jun 2017 15:09 CST +0800
Booted last: 17 Jun 2017 00:00 CST +0800
Script from: 25 Mar 2017 07:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 17.04
Release: 17.04
Codename: zesty
##### kernel ############################
Linux 4.10.0-19-generic #21-Ubuntu SMP Thu Apr 6 17:04:57 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
GNOME
##### lspci #############################
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 16)
Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:838f]
Kernel driver in use: r8169
04:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:b822]
Subsystem: Hewlett-Packard Company Device [103c:831b]
05:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader [10ec:522a] (rev 01)
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0bda:b00b Realtek Semiconductor Corp.
Bus 001 Device 002: ID 04f2:b5d6 Chicony Electronics Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
##### lsmod #############################
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
mxm_wmi 16384 1 nouveau
wmi 16384 3 mxm_wmi,nouveau,hp_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback <MAC address> brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether <MAC 'enp3s0' [IF1]> brd <MAC address>
inet 192.168.50.5/24 brd 192.168.50.255 scope global dynamic enp3s0
valid_lft 83146sec preferred_lft 83146sec
inet6 fe80::ef4:dc54:7aa3:546/64 scope link
valid_lft forever preferred_lft forever
##### iwconfig ##########################
enp3s0 no wireless extensions.
lo no wireless extensions.
##### route #############################
default via 192.168.50.1 dev enp3s0 proto static metric 100
169.254.0.0/16 dev enp3s0 scope link metric 1000
192.168.50.0/24 dev enp3s0 proto kernel scope link src 192.168.50.5 metric 100
##### resolv.conf #######################
nameserver 127.0.0.53
##### network managers ##################
Installed:
NetworkManager
Running:
root 829 1 0 14:15 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp3s0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 2.3LK-NAPI
GENERAL.FIRMWARE-VERSION:
GENERAL.HWADDR: <MAC 'enp3s0' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.4/0000:03:00.0/net/enp3s0
GENERAL.IP-IFACE: enp3s0
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 1
GENERAL.CON-UUID: d0a6c4d6-510a-325c-8465-361e2f13261b
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/0
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 100 Mb/s
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: on
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: d0a6c4d6-510a-325c-8465-361e2f13261b | Wired connection 1
IP4.ADDRESS[1]: 192.168.50.5/24
IP4.GATEWAY: 192.168.50.1
IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 192.168.50.1
DHCP4.OPTION[1]: requested_subnet_mask = 1
DHCP4.OPTION[2]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[3]: subnet_mask = 255.255.255.0
DHCP4.OPTION[4]: domain_name_servers = 192.168.50.1
DHCP4.OPTION[5]: ip_address = 192.168.50.5
DHCP4.OPTION[6]: requested_static_routes = 1
DHCP4.OPTION[7]: dhcp_server_identifier = 192.168.50.1
DHCP4.OPTION[8]: requested_time_offset = 1
DHCP4.OPTION[9]: broadcast_address = 192.168.50.255
DHCP4.OPTION[10]: requested_interface_mtu = 1
DHCP4.OPTION[11]: dhcp_rebinding_time = 75600
DHCP4.OPTION[12]: requested_domain_name_servers = 1
DHCP4.OPTION[13]: dhcp_message_type = 5
DHCP4.OPTION[14]: requested_broadcast_address = 1
DHCP4.OPTION[15]: routers = 192.168.50.1
DHCP4.OPTION[16]: wpad = a
DHCP4.OPTION[17]: dhcp_renewal_time = 43200
DHCP4.OPTION[18]: requested_domain_name = 1
DHCP4.OPTION[19]: requested_routers = 1
DHCP4.OPTION[20]: expiry = 1497766543
DHCP4.OPTION[21]: requested_wpad = 1
DHCP4.OPTION[22]: host_name = OMEN15
DHCP4.OPTION[23]: requested_netbios_scope = 1
DHCP4.OPTION[24]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[25]: requested_netbios_name_servers = 1
DHCP4.OPTION[26]: network_number = 192.168.50.0
DHCP4.OPTION[27]: requested_domain_search = 1
DHCP4.OPTION[28]: requested_ntp_servers = 1
DHCP4.OPTION[29]: next_server = 192.168.50.1
DHCP4.OPTION[30]: requested_host_name = 1
DHCP4.OPTION[31]: dhcp_lease_time = 86400
IP6.ADDRESS[1]: fe80::ef4:dc54:7aa3:546/64
IP6.GATEWAY:
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/mac's MacBook Pro]] (600 root)
[connection] id=mac's MacBook Pro | type=wifi | permissions=
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=mac's MacBook Pro
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/9527]] (600 root)
[connection] id=9527 | type=wifi | permissions=
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=9527
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Connectify-9999]] (600 root)
[connection] id=Connectify-9999 | type=wifi | permissions=
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=Connectify-9999
[ipv4] method=auto
[ipv6] method=auto
##### iw reg get ########################
Region: Asia/Shanghai (based on set time zone)
global
country 00: DFS-UNSET
(2402 - 2472 @ 40), (6, 20), (N/A)
(2457 - 2482 @ 20), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(2474 - 2494 @ 20), (6, 20), (N/A), NO-OFDM, PASSIVE-SCAN
(5170 - 5250 @ 80), (6, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(5250 - 5330 @ 80), (6, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
(5490 - 5730 @ 160), (6, 20), (0 ms), DFS, PASSIVE-SCAN
(5735 - 5835 @ 80), (6, 20), (N/A), PASSIVE-SCAN
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
enp3s0 no frequency information.
lo no frequency information.
##### iwlist scan #######################
enp3s0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
##### module parameters #################
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
##### rc.local ##########################
grep: /etc/rc.local: No such file or directory
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 5.520481] Bluetooth: hci0: rtl: examining hci_ver=07 hci_rev=000b lmp_ver=07 lmp_subver=8822
[ 5.520482] Bluetooth: hci0: rtl: loading rtl_bt/rtl8822b_config.bin
[ 5.543562] Bluetooth: hci0: rtl: loading rtl_bt/rtl8822b_fw.bin
[ 7.556142] IPv6: ADDRCONF(NETDEV_UP): enp3s0: link is not ready
[ 7.576972] r8169 0000:03:00.0 enp3s0: link down
[ 7.577052] IPv6: ADDRCONF(NETDEV_UP): enp3s0: link is not ready
[ 7.585025] r8169 0000:03:00.0 enp3s0: link down
[ 15.054434] r8169 0000:03:00.0 enp3s0: link up
[ 15.054442] IPv6: ADDRCONF(NETDEV_CHANGE): enp3s0: link becomes ready
########## wireless info END ############
答案1
18.04 版更新答案
此处接受的解决方案对于 Ubuntu 18.04 来说已经过时了 -rtl8822be应该是开箱即用的。
- 在安装过程中，Ubuntu 应该会检测你拥有的 Wifi 卡并为其安装正确的驱动程序，但要在 Ubuntu 18.04 上搜索任何其他可用的驱动程序，请转到软件与更新程序并点击附加驱动程序标签。
（点击“活动' 在桌面左上角。输入's' 在搜索框中输入应该足以显示可用的相关程序）
- 另一个偶尔发生的“怪癖”是安全启动驱动程序签名存在问题并阻止其加载。
您可以通过检查机器的BIOS设置（通常通过按制造商选择的特定键来访问，例如f2或esc当您打开计算机时，但Grub 菜单还允许您选择“系统设置' 来查看您的选项）。
- 在某些情况下，软件或硬件阻止可能会阻止 Wifi 连接。您可以通过
rfkill list在终端中输入来检查这一点。
如果您仍然遇到问题，这里有一个很好的故障排除指南：https://help.ubuntu.com/stable/ubuntu-help/net-wireless-troubleshooting.html.en
答案2
我刚刚开始工作，一切都相当容易（经过谷歌搜索等）
安装最新的 4.14 内核和驱动程序代码（来自说明这里）
wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14/linux-headers-4.14.0-041400_4.14.0-041400.201711122031_all.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14/linux-headers-4.14.0-041400-generic_4.14.0-041400.201711122031_amd64.deb wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14/linux-image-4.14.0-041400-generic_4.14.0-041400.201711122031_amd64.deb sudo dpkg -i linux*.debrtl8822befw.bin从以下位置下载固件文件这里。将其保存在 中
/lib/firmware/rtlwifi。请注意，较新的发行版可能已经有此文件。重启。
享受
请注意，此驱动程序目前仍处于测试阶段，因此使用时请自行承担风险！
答案3
我可以确认@user776895 的答案修复了我的机器上的问题。非常感谢！！
不过，手动升级内核是否会导致 Ubuntu 启动菜单中出现新条目？根据这一页
wget linux-headers.deb ....
wget linxu-image.deb。然后，可以通过在终端中执行以下操作来同时安装所有软件包：
sudo dpkg -i *.deb此过程完成后，您的启动菜单上应该会出现一个代表上游内核的新条目（如果启动菜单未显示，请在启动时按 Shift）。这将显示为如下条目：
Ubuntu Trusty，内核 xxx.xxxx-generic
我使用过ukuu 并确认我的 grub2 菜单没有问题（没有看到新条目）
还值得一提的是，它
linux-firmware 1.161 不包含所需的固件，所以不要费心尝试
答案4
Chili555 的解决方案来自主题无线网络没有显示？对我来说很好用。运行以下命令：
sudo apt-get update
sudo apt-get install b43-fwcutter
然后重新启动笔记本电脑，wifi 网络就会显示出来。