我重新安装了 Ubuntu 20.04 并更新到 20.10，但现在 Wi-Fi 无法使用。它显示“未找到 Wi-Fi 适配器”。
这是 lshw 的结果：
*-network UNCLAIMED
description: Network controller
product: QCA6174 802.11ac Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:04:00.0
version: 32
width: 64 bits
clock: 33MHz
capabilities: cap_list
configuration: latency=0
resources: memory:d1200000-d13fffff
dpkg -l | grep linux-modules-extra-$(uname -r)
ii linux-modules-extra-5.8.0-33-generic 5.8.0-33.36 amd64 Linux kernel extra modules for version 5.8.0 on 64 bit x86 SMP
lspci -nnk | grep -iA3 net; dkms status
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
DeviceName: Realtek RTL8111E Ethernet LOM
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:38f7]
Kernel driver in use: r8169
Kernel modules: r8169
04:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
Subsystem: Lenovo QCA6174 802.11ac Wireless Network Adapter [17aa:0827]
Kernel modules: ath10k_pci
05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c6)
Subsystem: Lenovo Renoir [17aa:3a44]
rtl8821ce, v5.5.2_34066.20200325, 5.8.0-33-generic, x86_64: installed
sudo dmesg | grep ath
[ 2.458101] ath10k_pci 0000:04:00.0: failed to alloc CE src ring 0: -12
[ 2.458108] ath10k_pci 0000:04:00.0: failed to allocate copy engine pipe 0: -12
[ 2.458111] ath10k_pci 0000:04:00.0: failed to allocate copy engine pipes: -12
[ 2.458114] ath10k_pci 0000:04:00.0: failed to setup resource: -12
[ 2.460062] ath10k_pci: probe of 0000:04:00.0 failed with error -12
[ 2.595278] Modules linked in: snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep amd64_edac_mod(-) edac_mce_amd ath10k_pci amdgpu(+) snd_pcm kvm_amd ath10k_core snd_seq_midi nouveau(+) snd_seq_midi_event kvm ath snd_rawmidi mac80211 uvcvideo iommu_v2 crct10dif_pclmul gpu_sched snd_seq btusb videobuf2_vmalloc ghash_clmulni_intel videobuf2_memops btrtl mxm_wmi videobuf2_v4l2 btbcm ttm btintel snd_seq_device aesni_intel snd_timer videobuf2_common bluetooth drm_kms_helper crypto_simd videodev cryptd input_leds glue_helper ecdh_generic cec rapl mc serio_raw efi_pstore hid_multitouch wmi_bmof cfg80211 ecc snd rc_core k10temp snd_rn_pci_acp3x i2c_algo_bit fb_sys_fops soundcore libarc4 syscopyarea snd_pci_acp3x sysfillrect sysimgblt ccp cm32181 industrialio mac_hid sch_fq_codel parport_pc ppdev lp parport drm ip_tables x_tables autofs4 usbhid hid_generic crc32_pclmul psmouse nvme ahci r8169 xhci_pci i2c_piix4 libahci xhci_pci_renesas nvme_core realtek wmi video i2c_hid hid
[ 27.766675] audit: type=1107 audit(1609348791.668:66): pid=766 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/NetworkManager" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.10" pid=2382 label="snap.snap-store.ubuntu-software" peer_pid=767 peer_label="unconfined"
[ 28.623047] audit: type=1107 audit(1609348792.524:67): pid=766 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.7" pid=2382 label="snap.snap-store.ubuntu-software" peer_pid=779 peer_label="unconfined"
[ 28.623694] audit: type=1107 audit(1609348792.524:68): pid=766 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.PolicyKit1.Authority" member="CheckAuthorization" mask="send" name=":1.7" pid=2382 label="snap.snap-store.ubuntu-software" peer_pid=779 peer_label="unconfined"
[ 28.646185] audit: type=1107 audit(1609348792.548:69): pid=766 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name=":1.7" pid=2382 label="snap.snap-store.ubuntu-software" peer_pid=779 peer_label="unconfined"
[ 28.646951] audit: type=1107 audit(1609348792.548:70): pid=766 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.PolicyKit1.Authority" member="CheckAuthorization" mask="send" name=":1.7" pid=2382 label="snap.snap-store.ubuntu-software" peer_pid=779 peer_label="unconfined"
答案1
我将内核从 5.8.0 更新到了 5.10.4，现在可以正常工作了。谢谢！