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Soheil Paper
Asked: 2020-04-29 09:53:56 +0800 CST

手动关机后wifi驱动丢失

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我的 Ubuntu 在运行 Android 的 VirtualBox 版本时停止，所以我关闭了系统。

根据this previous question，现在ti可以登录到Ubuntu OS，但是获取WiFi驱动程序的问题并且当我运行ifconfig它时显示WiFi数据，

所以我尝试通过以下代码从 live USB Ubuntu 安装 WiFi 驱动程序：

sudo apt remove broadcom-sta-dkms bcmwl-kernel-source
sudo add-apt-repository restricted
sudo apt update
sudo apt-get install bcmwl-kernel-source
sudo apt-get install linux-generic
sudo apt autoremove

并通过现场 USB 环境显示它已安装：


root@ubuntu:/# ifconfig
enp1s0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether c8:5b:76:8b:3e:ae  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 4589  bytes 386757 (386.7 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4589  bytes 386757 (386.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.100  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::1153:1820:27de:5a87  prefixlen 64  scopeid 0x20<link>
        ether c8:3d:d4:3c:23:63  txqueuelen 1000  (Ethernet)
        RX packets 32549  bytes 35889892 (35.8 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 25157  bytes 3314860 (3.3 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

现在它通过 Ubuntu live CD 显示 WiFi，sudo chroot /mnt/如下所示：

root@ubuntu:/# lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 02)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #5 (rev f1)
00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821AE 802.11ac PCIe Wireless Network Adapter
03:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 920MX] (rev a2)
root@ubuntu:/# iwconfig
lo        no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"TP-LINK_4AD2"  
          Mode:Managed  Frequency:2.447 GHz  Access Point: D4:6E:0E:45:4A:D2   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr=2347 B   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=48/70  Signal level=-62 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:303   Missed beacon:0

enp1s0    no wireless extensions.

但不通过我电脑中的主 Ubuntu 显示此设置，并且无法在那里连接到互联网？

主 Ubuntu 从 live USB 获取的版本是这样的：

ubuntu@ubuntu:~$  cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.3 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.3 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic

更新： 还可以通过 live USB Ubuntu 版本获取此输出：

root@ubuntu:/etc/modprobe.d# sudo ifup wlp2s0
Unknown interface wlp2s0

root@ubuntu:/etc/modprobe.d# sudo modprobe rtl8821ae
modprobe: FATAL: Module rtl8821ae not found in directory /lib/modules/5.0.0-23-generic

根据这篇文章检查我是否安装了驱动程序：

root@ubuntu:/etc/modprobe.d# modinfo rtl8821ae
modinfo: ERROR: Module rtl8821ae not found.
root@ubuntu:/etc/modprobe.d# find /lib/modules/$(uname -r)/kernel/drivers/net/wireless -name '*.ko'
find: ‘/lib/modules/5.0.0-23-generic/kernel/drivers/net/wireless’: No such file or directory

并形成这篇文章：

root@ubuntu:~/rtlwifi_new#     sudo modprobe rtl8821ae
modprobe: FATAL: Module rtl8821ae not found in directory /lib/modules/5.0.0-23-generic
root@ubuntu:~/rtlwifi_new# dmesg | tail
\[ 2975.493281] nouveau 0000:03:00.0: fifo: fault 01 [WRITE] at 0000000000100000 engine 04 [BAR1] client 08 [HUB/HOST_CPU_NB] reason cc [] on channel -1 [007fce7000 unknown]
[ 2981.742904] nouveau 0000:03:00.0: fifo: fault 01 [WRITE] at 0000000000000000 engine 04 [BAR1] client 08 [HUB/HOST_CPU_NB] reason cc [] on channel -1 [007fce7000 unknown]
[ 2981.743002] nouveau 0000:03:00.0: fifo: fault 00 [READ] at 0000000000100000 engine 04 [BAR1] client 07 [HUB/HOST_CPU] reason 4c [] on channel -1 [007fce7000 unknown]
[ 2981.743029] nouveau 0000:03:00.0: fifo: DROPPED_MMU_FAULT 00000000
[ 2996.797871] nouveau 0000:03:00.0: fifo: fault 01 [WRITE] at 0000000000050000 engine 05 [BAR2] client 08 [HUB/HOST_CPU_NB] reason ca [] on channel -1 [007fd38000 unknown]
[ 2996.803470] nouveau 0000:03:00.0: fifo: fault 01 [WRITE] at 0000000000100000 engine 04 [BAR1] client 08 [HUB/HOST_CPU_NB] reason cc [] on channel -1 [007fce7000 unknown]
[ 3003.054698] nouveau 0000:03:00.0: fifo: fault 01 [WRITE] at 0000000000000000 engine 04 [BAR1] client 08 [HUB/HOST_CPU_NB] reason cc [] on channel -1 [007fce7000 unknown]
[ 3003.054924] nouveau 0000:03:00.0: fifo: fault 00 [READ] at 0000000000100000 engine 04 [BAR1] client 07 [HUB/HOST_CPU] reason 4c [] on channel -1 [007fce7000 unknown]
[ 3003.054966] nouveau 0000:03:00.0: fifo: DROPPED_MMU_FAULT 00000000
[ 3513.772212] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)

谢谢。

networking wireless drivers

1 个回答

  1. Best Answer

    你的内核有问题。它是半安装的。

    可能在您关闭系统电源时正在进行无人值守的升级。

    使用以前的内核启动（Wi-Fi 应该可以工作）并更新系统。

    顺便说一句，您问题开头的 Broadcom 命令与您的问题无关，因为您没有 Broadcom 设备。

    • 1

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