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Wifi 驱动程序错误：未知标头类型 7f

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Wifi 驱动程序错误：未知标头类型 7f

Lenovo Thinkpad 无法连接 Wifi。尽管以太网连接正常。我已经安装了 Ubuntu 20.04.1：

Linux username-ThinkPad-E490 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

笔记本是Lenovo Thinkpad E490（新的）

我尝试过这些事情：

  1. $ ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback ...
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether ...
3: wlp5s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether ...
  1. $ lspci -kv
05:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter (rev ff) (prog-if ff)
    !!! Unknown header type 7f
    Kernel driver in use: rtw_pci
    Kernel modules: rtwpci
  1. $ sudo modprobe 8822be
modprobe: FATAL: Module 8822be not found in directory /lib/modules/5.4.0-42-generic
  1. $ ls /lib/firmware/rtlwifi | grep rtl8822
rtl8822befw.bin

我不知道发生了什么。什么意思!!!未知标头类型 7f？驱动好像已经装好了，虽然界面没有起来。

答案1

在 Lenovo Legion Y530 上有同样的问题：Ubuntu 18.04 LTE

uname -r
5.4.0-42-generic


$ sudo lspci -v

07:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter (rev ff) (prog-if ff)
!!! Unknown header type 7f
Kernel driver in use: r8822be
Kernel modules: rtwpci, r8822be

$ sudo modprobe 8822be

modprobe: FATAL: Module 8822be not found in directory /lib/modules/5.4.0-42- 
generic

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