由于某些未知原因，WIFI 停止工作（有线互联网 - 工作正常），执行 ping 操作时出现以下 ping 错误：连接：网络无法访问。我是 Ubuntu 新手，谁能告诉我如何解决 WIFI 问题？谢谢！
ip a:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
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: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 84:a9:38:1d:d4:34 brd ff:ff:ff:ff:ff:ff
altname enp3s0
inet 192.168.1.239/24 brd 192.168.1.255 scope global dynamic noprefixroute eno1
valid_lft 39442sec preferred_lft 39442sec
inet6 fdc9:3aa:7672::59e/128 scope global noprefixroute
valid_lft forever preferred_lft forever
inet6 fdc9:3aa:7672:0:3fc:7130:e5f9:a505/64 scope global temporary dynamic
valid_lft 601044sec preferred_lft 82117sec
inet6 fdc9:3aa:7672:0:c03:83e2:e150:1b96/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::9325:c095:1a5f:83f0/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether c8:94:02:41:f8:27 brd ff:ff:ff:ff:ff:ff
inet6 fdc9:3aa:7672::e6a/128 scope global noprefixroute
valid_lft forever preferred_lft forever
inet6 fdc9:3aa:7672:0:3a8f:45da:f548:2f79/64 scope global temporary dynamic
valid_lft 598087sec preferred_lft 79401sec
inet6 fdc9:3aa:7672:0:fb15:a45:d44c:d034/64 scope global mngtmpaddr noprefixroute
valid_lft forever preferred_lft forever
inet6 fe80::7ae7:8fc3:e63e:954d/64 scope link noprefixroute
valid_lft forever preferred_lft forever
4: br-21b84ad2dbf1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:b8:cc:49:55 brd ff:ff:ff:ff:ff:ff
inet 192.168.96.1/20 brd 192.168.111.255 scope global br-21b84ad2dbf1
valid_lft forever preferred_lft forever
5: br-2ecc8b3431a7: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:c5:b4:59:4a brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-2ecc8b3431a7
valid_lft forever preferred_lft forever
6: br-7fcbee73d3c7: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:37:ff:14:f5 brd ff:ff:ff:ff:ff:ff
inet 172.23.0.1/16 brd 172.23.255.255 scope global br-7fcbee73d3c7
valid_lft forever preferred_lft forever
7: br-0ca126777416: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:72:ed:ae:d1 brd ff:ff:ff:ff:ff:ff
inet 172.26.0.1/16 brd 172.26.255.255 scope global br-0ca126777416
valid_lft forever preferred_lft forever
8: br-711ba232865f: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:b0:d5:c7:04 brd ff:ff:ff:ff:ff:ff
inet 172.29.0.1/16 brd 172.29.255.255 scope global br-711ba232865f
valid_lft forever preferred_lft forever
9: br-cfb23b24456d: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:29:c4:92:cf brd ff:ff:ff:ff:ff:ff
inet 172.19.0.1/16 brd 172.19.255.255 scope global br-cfb23b24456d
valid_lft forever preferred_lft forever
10: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:6c:a6:ee:bc brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
11: br-4cadc3ef8e58: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:f4:d0:15:57 brd ff:ff:ff:ff:ff:ff
inet 192.168.208.1/20 brd 192.168.223.255 scope global br-4cadc3ef8e58
valid_lft forever preferred_lft forever
12: br-6b88c7c22933: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:55:e2:01:1b brd ff:ff:ff:ff:ff:ff
inet 172.25.0.1/16 brd 172.25.255.255 scope global br-6b88c7c22933
valid_lft forever preferred_lft forever
13: br-890f7e52c33d: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:08:45:82:37 brd ff:ff:ff:ff:ff:ff
inet 172.20.0.1/16 brd 172.20.255.255 scope global br-890f7e52c33d
valid_lft forever preferred_lft forever
14: br-c7c9cbb19c25: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:db:44:00:97 brd ff:ff:ff:ff:ff:ff
inet 172.27.0.1/16 brd 172.27.255.255 scope global br-c7c9cbb19c25
valid_lft forever preferred_lft forever
15: br-5845d74d52fe: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:26:d7:b2:1c brd ff:ff:ff:ff:ff:ff
inet 172.30.0.1/16 brd 172.30.255.255 scope global br-5845d74d52fe
valid_lft forever preferred_lft forever
16: br-c7e576c9f0c2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:97:57:14:61 brd ff:ff:ff:ff:ff:ff
inet 172.24.0.1/16 brd 172.24.255.255 scope global br-c7e576c9f0c2
valid_lft forever preferred_lft forever
17: br-cf6d39507823: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:30:ed:10:1f brd ff:ff:ff:ff:ff:ff
inet 172.28.0.1/16 brd 172.28.255.255 scope global br-cf6d39507823
valid_lft forever preferred_lft forever
18: br-ed85261cdb8f: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:53:ff:fe:ae brd ff:ff:ff:ff:ff:ff
inet 192.168.32.1/20 brd 192.168.47.255 scope global br-ed85261cdb8f
valid_lft forever preferred_lft forever
19: br-f6412b786f22: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:19:ac:3a:ee brd ff:ff:ff:ff:ff:ff
inet 172.21.0.1/16 brd 172.21.255.255 scope global br-f6412b786f22
valid_lft forever preferred_lft forever
ip 路由显示：
default via 192.168.1.1 dev eno1 proto dhcp metric 100
169.254.0.0/16 dev eno1 scope link metric 1000
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1 linkdown
172.18.0.0/16 dev br-2ecc8b3431a7 proto kernel scope link src 172.18.0.1 linkdown
172.19.0.0/16 dev br-cfb23b24456d proto kernel scope link src 172.19.0.1 linkdown
172.20.0.0/16 dev br-890f7e52c33d proto kernel scope link src 172.20.0.1 linkdown
172.21.0.0/16 dev br-f6412b786f22 proto kernel scope link src 172.21.0.1 linkdown
172.23.0.0/16 dev br-7fcbee73d3c7 proto kernel scope link src 172.23.0.1 linkdown
172.24.0.0/16 dev br-c7e576c9f0c2 proto kernel scope link src 172.24.0.1 linkdown
172.25.0.0/16 dev br-6b88c7c22933 proto kernel scope link src 172.25.0.1 linkdown
172.26.0.0/16 dev br-0ca126777416 proto kernel scope link src 172.26.0.1 linkdown
172.27.0.0/16 dev br-c7c9cbb19c25 proto kernel scope link src 172.27.0.1 linkdown
172.28.0.0/16 dev br-cf6d39507823 proto kernel scope link src 172.28.0.1 linkdown
172.29.0.0/16 dev br-711ba232865f proto kernel scope link src 172.29.0.1 linkdown
172.30.0.0/16 dev br-5845d74d52fe proto kernel scope link src 172.30.0.1 linkdown
192.168.1.0/24 dev eno1 proto kernel scope link src 192.168.1.239 metric 100
192.168.32.0/20 dev br-ed85261cdb8f proto kernel scope link src 192.168.32.1 linkdown
192.168.96.0/20 dev br-21b84ad2dbf1 proto kernel scope link src 192.168.96.1 linkdown
192.168.208.0/20 dev br-4cadc3ef8e58 proto kernel scope link src 192.168.208.1 linkdown
配置：
lo no wireless extensions.
eno1 no wireless extensions.
wlp4s0 IEEE 802.11 ESSID:"Langate_home"
Mode:Managed Frequency:2.462 GHz Access Point: 00:72:63:DC:58:5D
Bit Rate=52 Mb/s Tx-Power=3 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
br-21b84ad2dbf1 no wireless extensions.
br-2ecc8b3431a7 no wireless extensions.
br-7fcbee73d3c7 no wireless extensions.
br-0ca126777416 no wireless extensions.
br-711ba232865f no wireless extensions.
br-cfb23b24456d no wireless extensions.
docker0 no wireless extensions.
br-4cadc3ef8e58 no wireless extensions.
br-6b88c7c22933 no wireless extensions.
br-890f7e52c33d no wireless extensions.
br-c7c9cbb19c25 no wireless extensions.
br-5845d74d52fe no wireless extensions.
br-c7e576c9f0c2 no wireless extensions.
br-cf6d39507823 no wireless extensions.
br-ed85261cdb8f no wireless extensions.
br-f6412b786f22 no wireless extensions.
nmcli：
eno1: connected to Wired connection 1
"Realtek RTL8111/8168/8411"
ethernet (r8169), 84:A9:38:1D:D4:34, hw, mtu 1500
ip4 default
inet4 192.168.1.239/24
route4 192.168.1.0/24 metric 100
route4 default via 192.168.1.1 metric 100
route4 169.254.0.0/16 metric 1000
inet6 fdc9:3aa:7672:0:6faa:1db1:8c7e:1427/64
inet6 fdc9:3aa:7672::59e/128
inet6 fdc9:3aa:7672:0:c03:83e2:e150:1b96/64
inet6 fe80::9325:c095:1a5f:83f0/64
route6 fe80::/64 metric 1024
route6 fdc9:3aa:7672::/64 metric 100
route6 fdc9:3aa:7672::/48 via fe80::ee08:6bff:fe7c:afa4 metric 100
route6 fdc9:3aa:7672::59e/128 metric 100
wlp4s0: connected to Langate_home
"MEDIATEK Renoir/Cezanne GPP Bridge"
wifi (mt7921e), C8:94:02:41:F8:27, hw, mtu 1500
inet6 fdc9:3aa:7672:0:69f0:3353:922a:e736/64
inet6 fdc9:3aa:7672::e6a/128
inet6 fdc9:3aa:7672:0:fb15:a45:d44c:d034/64
inet6 fe80::7ae7:8fc3:e63e:954d/64
route6 fe80::/64 metric 1024
route6 fdc9:3aa:7672::/64 metric 600
route6 fdc9:3aa:7672::/48 via fe80::ee08:6bff:fe7c:afa4 metric 600
route6 fdc9:3aa:7672::e6a/128 metric 600