我有一个 Ubuntu 20.04 系统，其中有一个 RealTek RTL8812AU USB WiFi 设备。在更新之前，它运行良好，但从那以后我就无法让它工作了。以下是各种命令的一些输出：
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal
# lsusb | grep RTL
Bus 001 Device 002: ID 0846:9052 NetGear, Inc. A6100 AC600 DB Wireless Adapter [Realtek RTL8811AU]
# dkms status
nvidia, 510.73.05, 5.13.0-48-generic, x86_64: installed
nvidia, 510.73.05, 5.15.0-41-generic, x86_64: installed
rtl8812au, 4.3.8.12175.20140902+dfsg, 5.15.0-41-generic, x86_64: installed
# dmesg | grep 8812
#
# lsmod|grep 88
ipmi_msghandler 122880 1 ipmi_devintf
机器启动时，没有网络，我无法看到设备。如能得到任何帮助，我将不胜感激。
来自评论的进一步输出
# modprobe 8812au
# modinfo 8812au | egrep -i 'file|vermagic'
filename: /lib/modules/5.15.0-41-generic/updates/dkms/8812au.ko
vermagic: 5.15.0-41-generic SMP mod_unload modversions
parm: rtw_phy_file_path:The path of phy parameter (charp)
parm: rtw_load_phy_file:PHY File Bit Map (int)
parm: rtw_decrypt_phy_file:Enable Decrypt PHY File (int)
# modprobe 88XXau
modprobe: FATAL: Module 88XXau not found in directory /lib/modules/5.15.0-41-generic
$ sudo dmesg | grep 8812
[sudo] password for farhat:
[146965.745499] 8812au: unknown parameter 'rtw_drv_log_level' ignored
[146965.745505] 8812au: unknown parameter 'rtw_led_ctrl' ignored
[146965.745510] 8812au: unknown parameter 'rtw_beamform_cap' ignored
[146965.745512] 8812au: unknown parameter 'rtw_dfs_region_domain' ignored
[146965.745514] 8812au: unknown parameter 'rtw_switch_usb_mode' ignored
[146965.745636] RTL871X: rtl8812au v4.3.8_12175.20140902
[146965.745752] Modules linked in: 8812au(OE+) cfg80211 snd_usb_audio snd_usbmidi_lib intel_rapl_msr intel_rapl_common edac_mce_amd kvm_amd kvm nvidia_uvm(POE) snd_hda_codec_realtek crct10dif_pclmul snd_hda_codec_generic ghash_clmulni_intel nvidia_drm(POE) aesni_intel snd_hda_codec_hdmi nvidia_modeset(POE) ledtrig_audio crypto_simd snd_seq_midi cryptd snd_seq_midi_event snd_hda_intel snd_intel_dspcfg nvidia(POE) input_leds snd_intel_sdw_acpi rapl snd_rawmidi snd_hda_codec gspca_zc3xx snd_hda_core drm_kms_helper snd_seq ucsi_ccg snd_hwdep typec_ucsi gspca_main cec videobuf2_vmalloc wmi_bmof typec snd_pcm rc_core videobuf2_memops fb_sys_fops snd_seq_device syscopyarea sysfillrect videobuf2_v4l2 sysimgblt snd_timer videobuf2_common mxm_wmi videodev snd mc soundcore k10temp ccp mac_hid sch_fq_codel ipmi_devintf ipmi_msghandler msr parport_pc ppdev lp parport drm ip_tables x_tables autofs4 hid_generic usbhid hid nvme igb crc32_pclmul i2c_algo_bit ahci xhci_pci gpio_amdpt nvme_core i2c_nvidia_gpu
[146965.745841] ? _rtw_malloc+0x2d/0x2f [8812au]
[146965.745873] ? _rtw_memcpy+0x10/0x12 [8812au]
[146965.745902] ? rtw_5g_rates_init+0x1a/0x1c [8812au]
[146965.745933] rtw_wdev_alloc+0xfc/0x2a2 [8812au]
[146965.745964] rtw_usb_if1_init+0x10b/0x229 [8812au]
[146965.745993] rtw_drv_init+0x364/0x3fb [8812au]
[146965.746051] rtw_drv_entry+0x65/0x1000 [8812au]
[146966.040500] usbcore: registered new interface driver rtl8812au
[219920.658812] pcieport 0000:00:01.1: device [1022:1453] error status/mask=00001000/00006000
答案1
我建议我们一起尝试不同的驱动程序。首先，删除旧的、有缺陷的驱动程序：
sudo apt purge rtl8812au-dkms
接下来，让我们安装一个更新的驱动程序：
git clone https://github.com/morrownr/8821au-20210708.git
cd 8821au-20210708
sudo ./install-driver.sh
重新启动并告诉我们是否有任何改进。