因此，我从 18.04 LTS 进行了全新安装到这个新版本，我真的很喜欢它，但我通常会连接以太网电缆进行安装，问题是，当我断开连接时，我发现我遇到了几年前使用 Pop OS 时遇到的相同问题，我有一台配备 Realtek RTL8822BE WiFi 卡的笔记本电脑，蓝牙工作正常，但当我启用 WiFi 时却没有出现网络。
我已经尝试过了，sudo service network-manager但没有用，我注意到它已经下载了某种驱动程序，因为它没有出现在附加驱动程序中
也许这有帮助：
########## wireless info START ##########
Report from: 23 Apr 2020 20:38 -05 -0500
Booted last: 23 Apr 2020 00:00 -05 -0500
Script from: 22 Oct 2018 03:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
##### kernel ############################
Linux 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:200f]
Kernel driver in use: r8169
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter [10ec:b822] (rev ff)
Kernel driver in use: rtw_pci
Kernel modules: rtwpci
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 13d3:3526 IMC Networks Bluetooth Radio
Bus 001 Device 002: ID 13d3:5a03 IMC Networks USB2.0 VGA UVC WebCam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
##### secure boot #######################
SecureBoot disabled
##### lsmod #############################
mac80211 843776 2 rtwpci,rtw88
asus_nb_wmi 28672 0
cfg80211 704512 2 mac80211,rtw88
libarc4 16384 1 mac80211
asus_wmi 32768 1 asus_nb_wmi
sparse_keymap 16384 1 asus_wmi
wmi_bmof 16384 0
wmi 32768 2 asus_wmi,wmi_bmof
video 49152 2 asus_wmi,i915
##### interfaces ########################
##### ifconfig ##########################
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback <MAC address> brd <MAC address>
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether <MAC 'enp2s0' [IF1]> brd <MAC address>
inet 192.168.1.9/24 brd 192.168.1.255 scope global dynamic noprefixroute enp2s0
valid_lft 84179sec preferred_lft 84179sec
inet6 fe80::24cf:3fcc:c7bd:43e3/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether <MAC 'wlp3s0' [IF2]> brd <MAC address>
##### iwconfig ##########################
lo no wireless extensions.
enp2s0 no wireless extensions.
wlp3s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
##### route #############################
default via 192.168.1.1 dev enp2s0 proto dhcp metric 100
169.254.0.0/16 dev enp2s0 scope link metric 1000
192.168.1.0/24 dev enp2s0 proto kernel scope link src 192.168.1.9 metric 100
##### resolv.conf #######################
[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
nameserver 127.0.0.53
options edns0
##### network managers ##################
Installed:
NetworkManager
Running:
root 4032 1 0 20:00 ? 00:00:10 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enp2s0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/2
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: --
GENERAL.FIRMWARE-VERSION: rtl8168h-2_0.0.2 02/26/15
GENERAL.HWADDR: <MAC 'enp2s0' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.IP4-CONNECTIVITY: 4 (full)
GENERAL.IP6-CONNECTIVITY: 3 (limited)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.4/0000:02:00.0/net/enp2s0
GENERAL.IP-IFACE: enp2s0
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 1
GENERAL.CON-UUID: 22738187-3f7d-3038-8e90-6bef4a130dc7
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 1000 Mb/s
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
INTERFACE-FLAGS.UP: yes
INTERFACE-FLAGS.LOWER-UP: yes
INTERFACE-FLAGS.CARRIER: yes
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: 192.168.1.9/24
IP4.GATEWAY: 192.168.1.1
IP4.ROUTE[1]: dst = 0.0.0.0/0, nh = 192.168.1.1, mt = 100
IP4.ROUTE[2]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.ROUTE[3]: dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 100
IP4.DNS[1]: 200.21.200.10
IP4.DNS[2]: 200.21.200.80
DHCP4.OPTION[1]: dhcp_lease_time = 86400
DHCP4.OPTION[2]: domain_name_servers = 200.21.200.10 200.21.200.80
DHCP4.OPTION[3]: expiry = 1587776461
DHCP4.OPTION[4]: ip_address = 192.168.1.9
DHCP4.OPTION[5]: requested_broadcast_address = 1
DHCP4.OPTION[6]: requested_domain_name = 1
DHCP4.OPTION[7]: requested_domain_name_servers = 1
DHCP4.OPTION[8]: requested_domain_search = 1
DHCP4.OPTION[9]: requested_host_name = 1
DHCP4.OPTION[10]: requested_interface_mtu = 1
DHCP4.OPTION[11]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[12]: requested_nis_domain = 1
DHCP4.OPTION[13]: requested_nis_servers = 1
DHCP4.OPTION[14]: requested_ntp_servers = 1
DHCP4.OPTION[15]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[16]: requested_root_path = 1
DHCP4.OPTION[17]: requested_routers = 1
DHCP4.OPTION[18]: requested_static_routes = 1
DHCP4.OPTION[19]: requested_subnet_mask = 1
DHCP4.OPTION[20]: requested_time_offset = 1
DHCP4.OPTION[21]: requested_wpad = 1
DHCP4.OPTION[22]: routers = 192.168.1.1
DHCP4.OPTION[23]: subnet_mask = 255.255.255.0
IP6.ADDRESS[1]: fe80::24cf:3fcc:c7bd:43e3/64
IP6.GATEWAY: --
IP6.ROUTE[1]: dst = fe80::/64, nh = ::, mt = 100
IP6.ROUTE[2]: dst = ff00::/8, nh = ::, mt = 256, table=255
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/1
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 22738187-3f7d-3038-8e90-6bef4a130dc7 | Wired connection 1
GENERAL.DEVICE: wlp3s0
GENERAL.TYPE: wifi
GENERAL.NM-TYPE: NMDeviceWifi
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/3
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8822BE 802.11a/b/g/n/ac WiFi adapter
GENERAL.DRIVER: rtw_pci
GENERAL.DRIVER-VERSION: 5.4.0-26-generic
GENERAL.FIRMWARE-VERSION: N/A
GENERAL.HWADDR: <MAC 'wlp3s0' [IF2]>
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.REASON: 2 (Device is now managed)
GENERAL.IP4-CONNECTIVITY: 1 (none)
GENERAL.IP6-CONNECTIVITY: 1 (none)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.5/0000:03:00.0/net/wlp3s0
GENERAL.IP-IFACE: --
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
INTERFACE-FLAGS.UP: no
INTERFACE-FLAGS.LOWER-UP: no
INTERFACE-FLAGS.CARRIER: no
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: yes
WIFI-PROPERTIES.ADHOC: yes
WIFI-PROPERTIES.2GHZ: yes
WIFI-PROPERTIES.5GHZ: yes
WIFI-PROPERTIES.MESH: yes
WIFI-PROPERTIES.IBSS-RSN: no
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: --
SSID BSSID MODE CHAN FREQ RATE SIGNAL BARS SECURITY ACTIVE IN-USE
##### NetworkManager.state ##############
cat: /var/lib/NetworkManager/NetworkManager.state: Permission denied
##### NetworkManager config #############
[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 3
[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved
[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:gsm,except:type:cdma
[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com/
[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-mac-addr-change-wifi]
match-device=driver:rtl8723bs,driver:rtl8189es,driver:r8188eu,driver:8188eu,driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
wifi.cloned-mac-address=preserve
ethernet.cloned-mac-address=preserve
##### NetworkManager profiles ###########
##### Netplan config ####################
[/etc/netplan/01-network-manager-all.yaml]
network:
version: 2
renderer: NetworkManager
##### iw reg get ########################
Region: America/Bogota (based on set time zone)
global
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
(5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
(5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
lo no frequency information.
enp2s0 no frequency information.
wlp3s0 32 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Channel 14 : 2.484 GHz
Channel 36 : 5.18 GHz
Channel 40 : 5.2 GHz
Channel 44 : 5.22 GHz
Channel 48 : 5.24 GHz
Channel 52 : 5.26 GHz
Channel 56 : 5.28 GHz
Channel 60 : 5.3 GHz
Channel 64 : 5.32 GHz
Channel 100 : 5.5 GHz
Channel 104 : 5.52 GHz
Channel 108 : 5.54 GHz
Channel 112 : 5.56 GHz
Channel 116 : 5.58 GHz
Channel 120 : 5.6 GHz
Channel 124 : 5.62 GHz
Channel 128 : 5.64 GHz
Channel 132 : 5.66 GHz
Channel 136 : 5.68 GHz
##### iwlist scan #######################
lo Interface doesn't support scanning.
wlp3s0 Interface doesn't support scanning : Network is down
enp2s0 Interface doesn't support scanning.
##### module infos ######################
[mac80211]
filename: /lib/modules/5.4.0-26-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 903F9DC753D67350BFBEC9F
depends: cfg80211,libarc4
retpoline: Y
intree: Y
name: mac80211
vermagic: 5.4.0-26-generic SMP mod_unload
sig_id: PKCS#7
signer: Build time autogenerated kernel key
sig_key: 2E:1C:6B:CE:DF:4D:6E:F0:5B:25:79:E8:B6:0E:F2:9A:9A:01:CB:AF
sig_hashalgo: sha512
signature: 2B:5C:FC:D8:EF:9D:04:F8:88:28:B5:A8:60:84:B4:59:A5:EE:F1:0B:
D2:92:A2:2D:62:67:99:35:2C:99:1A:8A:B5:CE:9E:C9:09:49:26:1D:
B0:12:5C:28:EE:89:BF:BC:CB:65:A1:1C:17:25:C8:31:04:77:27:6D:
A6:68:C9:F0:13:77:8A:7E:4F:7A:68:A5:17:EE:A2:9C:0D:96:0A:3D:
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D4:56:F9:8A:35:6C:22:25:88:43:4D:47:13:63:26:AE:5C:D1:64:EA:
39:55:D7:D9:F1:08:C2:A4:76:39:5D:6B:91:41:6A:10:41:34:8C:C3:
06:A6:EE:81:61:F8:00:CA:97:A8:39:8D:00:E9:A2:7C:29:A2:BF:C9:
0C:2C:2C:9D:66:43:6D:53:B3:ED:EA:16:C3:8E:EF:22:0D:FE:20:5E:
CD:B7:9B:BC:9A:B0:F3:4A:D8:D2:A9:22:A8:9A:D4:F6:80:EF:9F:FC:
73:3B:EC:A7:7D:E5:1B:0D:DC:FB:E8:08:31:97:E7:7D:FE:87:7C:3A:
04:31:F6:67:E0:9E:BB:E0:48:75:D2:AB:53:2B:92:A7:84:67:A0:11:
06:0A:7A:1C:04:E7:B0:BF:B2:CD:B9:41:65:71:6A:46:2F:B4:D5:CD:
49:0D:C5:96:30:AC:A1:D0:2D:6F:AA:1C:9B:D8:5F:C2:2C:30:7C:43:
CE:E0:E6:3B:40:E2:73:EF:C0:B3:92:61:8E:2D:A2:32:28:B9:41:56:
B7:BE:58:43:81:10:31:CE:43:99:F6:51:26:64:0D:CC:75:95:F4:68:
02:B4:A2:A2:A9:C9:D7:64:8A:CE:92:80:D8:05:8B:CD:D1:94:97:56:
54:3F:9C:24:8F:A5:82:43:A7:C9:DA:0D:99:4F:66:43:6D:D2:72:F3:
2A:6B:5C:5A:3E:7E:25:BC:53:9B:D9:A2:CE:B3:ED:E0:80:8F:82:D3:
ED:0C:E9:95:6B:D1:B9:BC:1C:9B:4A:2F:A0:18:66:AD:69:9C:AF:A1:
C1:90:0C:96:AC:C7:1E:17:C5:CC:70:1A
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)
[cfg80211]
filename: /lib/modules/5.4.0-26-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 8795FC14A499B3F7A2F6AD8
depends:
retpoline: Y
intree: Y
name: cfg80211
vermagic: 5.4.0-26-generic SMP mod_unload
sig_id: PKCS#7
signer: Build time autogenerated kernel key
sig_key: 2E:1C:6B:CE:DF:4D:6E:F0:5B:25:79:E8:B6:0E:F2:9A:9A:01:CB:AF
sig_hashalgo: sha512
signature: 2B:BE:F5:0E:F8:79:0A:5A:28:AA:E7:CD:D2:DA:FE:D8:D3:EF:7F:A2:
2F:0D:AD:65:F1:AD:D9:74:29:73:54:B8:C7:7D:9E:6C:EC:46:6F:1D:
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2A:ED:96:AD:07:48:7A:F7:19:D4:10:F9:A5:4E:90:A8:FD:8A:02:14:
AA:31:06:91:5E:2C:58:DA:3D:8F:20:2F:D3:21:99:2C:B7:CF:4E:53:
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07:95:B8:3B:A5:96:F9:20:D6:2C:BC:DA:22:C4:97:DD:FB:1C:8B:ED:
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2D:FD:E8:2F:50:C3:48:3A:0A:0D:F1:1B:53:D1:A3:9E:5B:A8:1C:56:
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26:58:24:64:9C:0D:CC:46:A2:3E:27:1D:35:F3:81:E1:98:78:89:07:
D1:09:63:80:D0:79:48:21:95:84:62:17:32:3B:C9:67:98:22:D2:26:
3E:B5:3A:25:EF:BE:42:CE:99:A1:50:D0:4D:70:28:94:31:9D:63:DA:
78:5A:BD:8A:8B:78:76:DA:40:33:3E:D8:9D:D5:C7:CF:6B:5F:05:47:
E2:30:AE:2A:C8:42:36:14:21:5E:93:B9:70:3B:16:00:49:F9:28:A6:
23:76:A2:03:1A:A1:CE:42:08:55:E7:FD:39:62:50:E9:E1:73:58:60:
75:B9:44:7E:4F:17:CF:1A:19:20:56:A4:43:38:FC:9F:2C:7E:C0:C2:
FE:C2:AF:73:C7:8F:76:8E:CB:72:D9:FD:1C:9D:06:1B:30:99:3B:5C:
6F:2B:DC:CB:71:3F:FC:C3:4F:DF:CE:B4:77:F2:A9:9E:8D:5D:90:A9:
52:02:1A:EE:B3:D1:ED:6E:19:81:FC:3A:2E:48:BA:26:E8:F8:52:D7:
62:5C:AE:7C:88:2B:29:87:0C:60:A3:23
parm: bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500
[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/r8822be.conf]
options r8822be aspm=0
##### rc.local ##########################
grep: /etc/rc.local: No such file or directory
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 938.935118] r8169 0000:02:00.0 enp2s0: Link is Up - 1Gbps/Full - flow control rx/tx
[ 938.935145] IPv6: ADDRCONF(NETDEV_CHANGE): enp2s0: link becomes ready
########## wireless info END ############
我不知道该怎么办，我已经尝试了论坛上看到的所有方法，但都没有解决问题，我希望有人可以帮助我。
无论如何，我认为这也许是发布的问题，因为它是全新的，今天刚刚发布，可能没有多少人拥有这张糟糕的卡。
谢谢，
答案1
我一直遇到网络掉线的问题，右上角的网络图标上有一个“？”。
以下步骤对我有用，无需重新启动电脑。
sudo nmcli networking off
进而，
sudo nmcli networking on
答案2
这是我在另一个论坛上找到的解决方案。看起来它对其他人很有效。我自己没有尝试过，因为我没有遇到同样的问题。
更改目录：
cd /lib/firmware
创建目录 rtw88
sudo mkdir rtw88
将rtl8822befw.bin复制到刚刚创建的目录中：
sudo cp /lib/firmware/rtlwifi/rtl8822befw.bin /lib/firmware/rtw88/
将该文件重命名为 rtw8822b_fw.bin：
sudo mv /lib/firmware/rtw88/rtl8822befw.bin /lib/firmware/rtw88/rtw8822b_fw.bin
重启系统
答案3
这似乎是内核问题。启动时，您可以从 GRUB 菜单中选择 Ubuntu 高级选项，然后选择适合您的内核（我选择通用内核）。
您可以从 UBUNTU 内核下载并安装通用内核，我按照链接中提供的步骤下载了通用内核（https://www.tecmint.com/upgrade-kernel-in-ubuntu/) 解决了该问题。
注意：我已经安装了通用内核版本 V5.4.81https://kernel.ubuntu.com/~kernel-ppa/mainline/对我来说似乎工作得很好，或者你可以选择你喜欢的内核。
答案4
按照以下步骤进行配置：
0 配置系统位置
sudo tzselect
sudo cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
date -R
1 安装网络工具
sudo apt-get install net-tools
2 启动 wifi
sudo ifconfig wlan0 up
3 编辑 wifi 配置
sudo nano /etc/netplan/50-cloud-init.yaml
4 应用配置
sudo iwconfig wlan0 power off
sudo netplan --debug try
sudo netplan --debug generate
sudo netplan --debug apply