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更新 Ubuntu 22.04 后 WiFi 速度变慢且断线

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更新 Ubuntu 22.04 后 WiFi 速度变慢且断线

今天更新并重启我的电脑（运行 Ubuntu 22.04.2 LTS）后，互联网连接变得非常不稳定且缓慢，经常断线。以下是 history.log 中的更改列表

Start-Date: 2023-04-28  12:24:07
Commandline: aptdaemon role='role-commit-packages' sender=':1.128'
Install: linux-modules-5.15.0-71-generic:amd64 (5.15.0-71.78, automatic), linux-modules-extra-5.15.0-71-generic:amd64 (5.15.0-71.78, automatic), linux-image-5.15.0-71-generic:amd64 (5.15.0-71.78, automatic), linux-headers-5.15.0-71:amd64 (5.15.0-71.78, automatic), linux-headers-5.15.0-71-generic:amd64 (5.15.0-71.78, automatic)
Upgrade: linux-headers-generic:amd64 (5.15.0.70.68, 5.15.0.71.69), tzdata:amd64 (2023c-0ubuntu0.22.04.0, 2023c-0ubuntu0.22.04.1), linux-generic:amd64 (5.15.0.70.68, 5.15.0.71.69), libssl3:amd64 (3.0.2-0ubuntu1.8, 3.0.2-0ubuntu1.9), libssl3:i386 (3.0.2-0ubuntu1.8, 3.0.2-0ubuntu1.9), tableplus:amd64 (0.1.212, 0.1.214), ipp-usb:amd64 (0.9.20-1, 0.9.20-1ubuntu0.22.04.1), libssl-dev:amd64 (3.0.2-0ubuntu1.8, 3.0.2-0ubuntu1.9), linux-image-generic:amd64 (5.15.0.70.68, 5.15.0.71.69), ubuntu-advantage-tools:amd64 (27.13.6~22.04.1, 27.14.4~22.04), openssl:amd64 (3.0.2-0ubuntu1.8, 3.0.2-0ubuntu1.9), linux-libc-dev:amd64 (5.15.0-70.77, 5.15.0-71.78)
End-Date: 2023-04-28  12:25:41

Start-Date: 2023-04-28  13:12:41
Commandline: aptdaemon role='role-commit-packages' sender=':1.128'
Remove: linux-modules-5.15.0-69-generic:amd64 (5.15.0-69.76), linux-modules-extra-5.15.0-69-generic:amd64 (5.15.0-69.76), linux-headers-5.15.0-69:amd64 (5.15.0-69.76), linux-image-5.15.0-69-generic:amd64 (5.15.0-69.76), linux-headers-5.15.0-69-generic:amd64 (5.15.0-69.76)
End-Date: 2023-04-28  13:12:45

以下是输出sudo lshw -C network

*-network                 
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eno1
       version: 15
       serial: 14:cb:19:72:e3:f2
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.15.0-71-generic firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:16 ioport:4000(size=256) memory:b1304000-b1304fff memory:b1300000-b1303fff
  *-network
       description: Wireless interface
       product: RTL8821CE 802.11ac PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlo1
       version: 00
       serial: 64:6c:80:ca:8b:35
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtw_8821ce driverversion=5.15.0-71-generic firmware=N/A ip=192.168.183.218 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:134 ioport:3000(size=256) memory:b1200000-b120ffff

如果有人能提供帮助，我将不胜感激。如果我犯了错误，请原谅，英语不是我的母语。

答案1

我的 wifi 连接也出现了一些不稳定的情况。在我研究这个问题的过程中，有人建议禁用 NetworkManager 配置中的省电选项。

这是通过编辑/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf文件并将行更改wifi.powersave=3为来完成的wifi.powersave=2。

我目前正在尝试这个，虽然不完美，但似乎比以前更好。

请参阅：如何永久关闭无线电源管理 | Unix 和 Linux

祝你好运！

答案2

感谢大家的帮助，我成功解决了我的问题。

经过一番研究，我设法通过将 rtw88_8821ce 列入黑名单/etc/modprobe.d/blacklist.conf并重新启动来修复它。这迫使计算机改用已安装的 rtl8821ce 驱动程序，现在它运行正常。

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