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Ubuntu 20.04 上的 Wi-Fi 速度极慢

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Ubuntu 20.04 上的 Wi-Fi 速度极慢

我昨天安装了 Ubuntu 20.04（与 Windows 10 双启动），从那时起，我就遇到了 wifi 速度极慢的问题。我有一个英特尔无线 AC 9560 适配器。我的 Windows 分区上的速度正常。我已经尝试了很多解决方案。sudo modprobe -r iwlwifi && sudo modprobe iwlwifi 11n_disable=1似乎有效，但它将我的速度限制在 20 MBps，而在 Windows 上我的速度可以达到 200。我不知道该怎么办，所以非常感谢您的帮助。

运行sudo iwlist scan我的 wifi 时的结果（我的终端中有 2 Ghz 和 5 GHz 条目）。

Cell 21 - Address: XX:XX:XX:XX:XX:XX
                    Channel:108
                    Frequency:5.54 GHz (Channel 108)
                    Quality=49/70  Signal level=-61 dBm  
                    Encryption key:on
                    ESSID:"H369A6B655A"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000002824f11e46d
                    Extra: Last beacon: 56ms ago
                    IE: Unknown: 000B4833363941364236353541
                    IE: Unknown: 01088C129824B048606C
                    IE: Unknown: 07304E4C202401172801172C01173001173401173801173C011740011764011E68011E6C011E70011E84011E88011E8C011E
                    IE: Unknown: 200100
                    IE: Unknown: 23021100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1AEF0917FFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D166C0D1600000000000000000000000000000000000000
                    IE: Unknown: 7F080400000000000040
                    IE: Unknown: BF0CB259820FEAFF0000EAFF0000
                    IE: Unknown: C005016A000000
                    IE: Unknown: C30402020202
                    IE: Unknown: DDA60050F204104A0001101044000102103B00010310470010E44E7AA738D2613B7D9690C1EA15A8E51021001B4B504E20576972656C6573732052616E676520457874656E6465721023001B4B504E20576972656C6573732052616E676520457874656E6465721024000631323334353610420004323034301054000800060050F20400011011000A4B504E5F5752455F4150100800020680103C0001031049000600372A000120
                    IE: Unknown: DD090010180202001C0000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 46057208010000

和

          Cell 13 - Address: XX:XX:XX:XX:XX:XX
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=58/70  Signal level=-52 dBm  
                    Encryption key:on
                    ESSID:"H369A6B655A"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000011a1dae8653
                    Extra: Last beacon: 1228ms ago
                    IE: Unknown: 000B4833363941364236353541
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0100
                    IE: Unknown: 32040C121860
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 46053208010000
                    IE: Unknown: 2D1ABD081BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F080500080000000040
                    IE: Unknown: DD750050F204104A0001101044000102103B0001031047001000000000000000000000000000000000102100035A5445102300035A54451024000631323334353610420004313233341054000800060050F2040001101100095A5445204833363941100800020000103C0001031049000600372A000120
                    IE: Unknown: DD090010180200001C0000
                    IE: Unknown: DD180 050F2020101000003A4000027A4000042435E0062322F00

消息 | grep iwl：https://paste.ubuntu.com/p/cT38pZpnBV/ sudo dkms 状态：https://paste.ubuntu.com/p/NRpkgB96kw/

答案1

编辑/etc/modprobe.d/iwlwifi.conf并在文件末尾添加以下内容 options iwlwifi bt_coex_active=0

然后sudo modprobe -r iwlwifi做sudo modprobe iwlwifi

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