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ThinkPad 未找到 Wi-Fi 适配器

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ThinkPad 未找到 Wi-Fi 适配器

大约两个月前，我在工作中收到了联想 ThinkPad L13（Core i7 第 10 代），并安装了 Ubuntu 18.04。WiFi 无法使用，但我设法通过安装 linux-image-generic-hwe-18.04_5.3.0.40.97_i386.deb 解决了这个问题，正如这里建议的那样搭载 Ubuntu 18.04 的联想 P1 上的 Wifi 不再起作用通过运行

sudo apt install --install-suggests linux-image-generic-hwe-18.04

今天我的系统更新后需要重启，然后又遇到了这个问题。我尝试了同样的命令，但没有成功（安装了最新版本，仍然没有 WiFi）。

linux-image-generic-hwe-18.04 is already the newest version (5.3.0.40.97).
0 upgraded, 0 newly installed, 0 to remove and 6 not upgraded.

我也试过这个Ubuntu 18.04 / iwlwifi：经常出现的问题，现在飞行模式已激活，挂起后无法删除但它对我没有帮助，还有这个联想 ThinkPad E570（Realtek RTL8821CE）上的 Wi-Fi 无法使用

有什么想法可以解决它吗？

ps lspci 给出此输出

00:00.0 Host bridge: Intel Corporation Device 9b61 (rev 0c)
00:02.0 VGA compatible controller: Intel Corporation Device 9b41 (rev 02)
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 0c)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Device 02f9
00:13.0 Serial controller: Intel Corporation Device 02fc
00:14.0 USB controller: Intel Corporation Device 02ed
00:14.2 RAM memory: Intel Corporation Device 02ef
00:14.3 Network controller: Intel Corporation Device 02f0
00:15.0 Serial bus controller [0c80]: Intel Corporation Device 02e8
00:16.0 Communication controller: Intel Corporation Device 02e0
00:1d.0 PCI bridge: Intel Corporation Device 02b0 (rev f0)
00:1d.4 PCI bridge: Intel Corporation Device 02b4 (rev f0)
00:1f.0 ISA bridge: Intel Corporation Device 0284
00:1f.3 Audio device: Intel Corporation Device 02c8
00:1f.4 SMBus: Intel Corporation Device 02a3
00:1f.5 Serial bus controller [0c80]: Intel Corporation Device 02a4
00:1f.6 Ethernet controller: Intel Corporation Device 0d4f
03:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981
05:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)

答案1

已修复。正如我所想，问题出在内核的最新更新中。

  1. 重新启动计算机，并在加载时按 shift 或 escape 键进入 GRUB 菜单
  2. 选择高级选项
  3. 使用以前的内核加载，而不是上层内核（也不是恢复内核）。记住上层内核的编号，以便稍后删除。笔记本电脑应该可以正常加载，WiFi 也可以正常工作

  4. 删除错误更新。就我的情况而言，这是我指出的，如果你的情况不同，请更改它。

    sudo apt-get purge linux-image-5.3.0-40-generic

    sudo apt-get purge linux-headers-5.3.0-40-generic

答案2

联想 ThinkPad L13 wifi 在内核 5.3.0-18（来自 ubuntu19.10）下运行良好

5.5.11、5.6.2 来自https://kernel.ubuntu.com/~kernel-ppa/mainline/

sudo lshw |grep Wireless -A12 -B1

        *-network:0         
             description: Wireless interface
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 14.3
             bus info: pci@0000:00:14.3
             logical name: wlp0s20f3
             version: 00
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
             configuration: broadcast=yes driver=iwlwifi driverversion=5.6.2-050602-generic firmware=48.4fa0041f.0 QuZ-a0-jf-b0-48.u ip=192.168.88.94 latency=0 link=yes multicast=yes wireless=IEEE 802.11
             resources: irq:16 memory:71338000-7133bfff

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