我知道这个问题已经被问过很多次了，也有很多“解决方案”。但很多解决方案对我来说都不起作用。编辑：解决方案不起作用，所以问题仍然存在。
我发布这篇文章是因为我发现了一些似乎已经发挥作用并且可能对其他人有用。
我不是 IT/计算机科学人员，因此请理解我可能不知道解决此问题的所有技术方法。
我的 wifi 在连接后不久就出现了“掉线”的问题。这个问题一直存在，但有时需要几分钟才会断开连接。当我ping ubuntu.com连接时ping: ubuntu.com: Temporary failure in name resolution
，如果我ping 8.8.8.8连接
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.178.105 icmp_seq=1 Destination Host Unreachable
偶尔，WiFi 会在“工作”和“不工作”之间切换，我不明白为什么会出现这种情况（这段时间我没有做任何不同的事情）。这段时间我的 ping 看起来像这样：
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=3 ttl=116 time=872 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=116 time=76.7 ms
From 192.168.178.105 icmp_seq=38 Destination Host Unreachable
From 192.168.178.105 icmp_seq=39 Destination Host Unreachable
From 192.168.178.105 icmp_seq=40 Destination Host Unreachable
From 192.168.178.105 icmp_seq=45 Destination Host Unreachable
64 bytes from 8.8.8.8: icmp_seq=5 ttl=116 time=48245 ms
64 bytes from 8.8.8.8: icmp_seq=6 ttl=116 time=47213 ms
64 bytes from 8.8.8.8: icmp_seq=7 ttl=116 time=46189 ms
大多数情况下，WiFi 根本无法连接。
wifi 并不是“明显”的问题，因为我在 20 多个不同的 wifi 和热点上遇到这个问题已经超过三个月了。在所有情况下，wifi 都适用于我的手机和其他电脑。此外，我有时可以连接（似乎是随机的），但只能持续几分钟。以太网工作正常，笔记本电脑可以通过 USB 连接到我的手机（这是访问 wifi，而不是数据连接）连接到互联网。
当 wifi 处于打开状态时，我无法从手机（termux 应用程序）ping 计算机，也无法从计算机 ping 手机。
结果...
sudo lshw -class network
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: enp2s0
version: 15
serial: 3c:7c:3f:ea:00:4e
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.19.0-44-generic firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=twisted pair
resources: irq:33 ioport:e000(size=256) memory:fc904000-fc904fff memory:fc900000-fc903fff
*-network
description: Wireless interface
product: RTL8822CE 802.11ac PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 00
serial: 94:08:53:4c:47:d7
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtw_8822ce driverversion=5.19.0-44-generic firmware=N/A ip=192.168.178.105 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:80 ioport:d000(size=256) memory:fc800000-fc80ffff
sudo dmesg | grep -i firmware
[108304.658940] rtw_8822ce 0000:03:00.0: failed to get tx report from firmware
[109316.179007] rtw_8822ce 0000:03:00.0: failed to get tx report from firmware
ip a
当 wifi 工作时...
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: enp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
link/ether 3c:7c:3f:ea:00:4e brd ff:ff:ff:ff:ff:ff
4: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 94:08:53:4c:47:d7 brd ff:ff:ff:ff:ff:ff
inet 192.168.178.105/24 brd 192.168.178.255 scope global dynamic noprefixroute wlp3s0
valid_lft 85601sec preferred_lft 85601sec
inet6 fe80::1b92:c535:444d:c49b/64 scope link noprefixroute
valid_lft forever preferred_lft forever
5: mpqemubr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 52:54:00:66:d1:a5 brd ff:ff:ff:ff:ff:ff
inet 10.181.94.1/24 brd 10.181.94.255 scope global mpqemubr0
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fe66:d1a5/64 scope link
valid_lft forever preferred_lft forever
6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:16:7e:75:ab 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
7: lxdbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:16:3e:cd:6f:d7 brd ff:ff:ff:ff:ff:ff
inet 10.8.182.1/24 scope global lxdbr0
valid_lft forever preferred_lft forever
inet6 fd42:58a3:ec4:bc97::1/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::216:3eff:fecd:6fd7/64 scope link
valid_lft forever preferred_lft forever
9: vethfbd66b7f@if8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether 16:bf:ba:4d:8c:a7 brd ff:ff:ff:ff:ff:ff link-netnsid 0
11: veth68bc0cf0@if10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether e6:8b:d1:15:4f:d2 brd ff:ff:ff:ff:ff:ff link-netnsid 1
13: veth0f1e58de@if12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether be:85:da:19:94:07 brd ff:ff:ff:ff:ff:ff link-netnsid 2
15: vethffbc257b@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether fa:97:21:29:d8:10 brd ff:ff:ff:ff:ff:ff link-netnsid 3
17: vetheb2a82f9@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether 16:26:66:99:c4:f8 brd ff:ff:ff:ff:ff:ff link-netnsid 4
18: tap-f70da783792: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master mpqemubr0 state UP group default qlen 1000
link/ether 86:06:5d:c4:9e:78 brd ff:ff:ff:ff:ff:ff
inet6 fe80::8406:5dff:fec4:9e78/64 scope link
valid_lft forever preferred_lft forever
当 wifi 不工作时...
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: enp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000
link/ether 3c:7c:3f:ea:00:4e brd ff:ff:ff:ff:ff:ff
4: wlp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 94:08:53:4c:47:d7 brd ff:ff:ff:ff:ff:ff
inet 192.168.178.105/24 brd 192.168.178.255 scope global dynamic noprefixroute wlp3s0
valid_lft 85553sec preferred_lft 85553sec
inet6 fe80::1b92:c535:444d:c49b/64 scope link noprefixroute
valid_lft forever preferred_lft forever
5: mpqemubr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 52:54:00:66:d1:a5 brd ff:ff:ff:ff:ff:ff
inet 10.181.94.1/24 brd 10.181.94.255 scope global mpqemubr0
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fe66:d1a5/64 scope link
valid_lft forever preferred_lft forever
6: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:16:7e:75:ab 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
7: lxdbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:16:3e:cd:6f:d7 brd ff:ff:ff:ff:ff:ff
inet 10.8.182.1/24 scope global lxdbr0
valid_lft forever preferred_lft forever
inet6 fd42:58a3:ec4:bc97::1/64 scope global
valid_lft forever preferred_lft forever
inet6 fe80::216:3eff:fecd:6fd7/64 scope link
valid_lft forever preferred_lft forever
9: vethfbd66b7f@if8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether 16:bf:ba:4d:8c:a7 brd ff:ff:ff:ff:ff:ff link-netnsid 0
11: veth68bc0cf0@if10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether e6:8b:d1:15:4f:d2 brd ff:ff:ff:ff:ff:ff link-netnsid 1
13: veth0f1e58de@if12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether be:85:da:19:94:07 brd ff:ff:ff:ff:ff:ff link-netnsid 2
15: vethffbc257b@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether fa:97:21:29:d8:10 brd ff:ff:ff:ff:ff:ff link-netnsid 3
17: vetheb2a82f9@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master lxdbr0 state UP group default qlen 1000
link/ether 16:26:66:99:c4:f8 brd ff:ff:ff:ff:ff:ff link-netnsid 4
18: tap-f70da783792: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master mpqemubr0 state UP group default qlen 1000
link/ether 86:06:5d:c4:9e:78 brd ff:ff:ff:ff:ff:ff
inet6 fe80::8406:5dff:fec4:9e78/64 scope link
valid_lft forever preferred_lft forever```
cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
cat /usr/share/doc/netplan/examples/wireless.yaml
network:
version: 2
renderer: networkd
wifis:
wlp2s0b1:
regulatory-domain: "GB"
dhcp4: no
dhcp6: no
addresses: [192.168.0.21/24]
nameservers:
addresses: [192.168.0.1, 8.8.8.8]
access-points:
"network_ssid_name":
password: "**********"
routes:
- to: default
via: 192.168.0.1
nmcli dev status
DEVICE TYPE STATE CONNECTION
wlp3s0 wifi connected TPLINK casadelsole2
lxdbr0 bridge connected (externally) lxdbr0
mpqemubr0 bridge connected (externally) mpqemubr0
docker0 bridge connected (externally) docker0
tap-f70da783792 tun connected (externally) tap-f70da783792
54:71:DD:38:60:F6 bt disconnected --
enp2s0 ethernet unavailable --
veth0f1e58de ethernet unmanaged --
veth68bc0cf0 ethernet unmanaged --
vetheb2a82f9 ethernet unmanaged --
vethfbd66b7f ethernet unmanaged --
vethffbc257b ethernet unmanaged --
lo loopback unmanaged --
系统信息：
OS: Ubuntu Sway 22.10 x86_64
Host: ASUSTeK COMPUTER INC. FA506IH
Kernel: 5.19.0-44-generic
Uptime: 1 day, 6 hours, 31 mins
Packages: 4319 (dpkg), 63 (snap)
Shell: bash 5.2.2
WM: sway
Terminal: kitty
CPU: AMD Ryzen 7 4800H with Radeon Graphics (16) @ 2.900GHz
GPU: NVIDIA NVIDIA Corporation TU117M
GPU: AMD ATI Renoir
Memory: 11834MiB / 39521MiB
答案1
编辑：此“解决方案”并未解决问题。最后，我升级到 Ubuntu 23.04，这样 wifi 问题就解决了。
我找到了这个答案： Ubuntu-server通过chroot netplan安装wifi网络无法访问
这似乎奏效了。虽然只过了几个小时，但这是 wifi 三个多月以来保持连接的最长时间，所以我希望这真的是解决方案。
我替换了以下内容：
cat /etc/netplan/01-network-manager-all.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
使用以下文件的内容：
cat /usr/share/doc/netplan/examples/wireless.yaml
network:
version: 2
renderer: networkd
wifis:
wlp2s0b1:
regulatory-domain: "GB"
dhcp4: no
dhcp6: no
addresses: [192.168.0.21/24]
nameservers:
addresses: [192.168.0.1, 8.8.8.8]
access-points:
"network_ssid_name":
password: "**********"
routes:
- to: default
via: 192.168.0.1
我只是复制了它（包括星号）。但将wlp2s0b1:笔记本电脑上的 wifi 更改为 wifi。然后我运行
sudo netplan apply
一开始好像没什么反应。大约 5 分钟后，WiFi 重新连接，并且到现在还没有消失。