我遇到了一个非常奇怪的问题。
我有一台运行 Ubuntu 18 的 aspire v nitro 笔记本电脑，可以双启动到 Windows，昨天突然互联网断线。可以通过重新启动网络管理器来解决这个问题。
如果我尝试 ping 某个东西，当它不工作时，我会得到
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
ping: sendmsg: No buffer space available
输出lspci -knn | grep Net -A3
Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
Subsystem: Foxconn International, Inc. QCA6174 802.11ac Wireless Network Adapter [105b:e09d]
Kernel driver in use: ath10k_pci
Kernel modules: ath10k_pci
和iwconfig
enp7s0 no wireless extensions.
lo no wireless extensions.
wlp6s0 IEEE 802.11 ESSID:"Bluffin Muff McGuff"
Mode:Managed Frequency:5.24 GHz Access Point: 54:67:51:DA:AF:BF
Bit Rate=6 Mb/s Tx-Power=30 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=63/70 Signal level=-47 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:73 Missed beacon:0
我谷歌搜索了很多次，发现很多答案都无济于事。我甚至重新安装了整个操作系统（在试图修复它时彻底搞砸了我的网络之后）。
有人有什么想法吗？
编辑：- 我被告知输入的命令
nmcli device
DEVICE TYPE STATE CONNECTION
wlp6s0 wifi connected Bluffin Muff McGuff
enp7s0 ethernet unavailable --
lo loopback unmanaged --
sudo lshw -short -class network
H/W path Device Class Description
====================================================
/0/100/1c/0 wlp6s0 network QCA6174 802.11ac Wireless Network Adapt
/0/100/1c.3/0 enp7s0 network RTL8111/8168/8411 PCI Express Gigabit E
networkctl status
WARNING: systemd-networkd is not running, output will be incomplete.
● State: n/a
Address: 192.168.0.52 on wlp6s0
2a02:8388:7001:5d80:4540:4576:28fd:3b58 on wlp6s0
2a02:8388:7001:5d80:754b:c96c:dc20:7b43 on wlp6s0
fe80::5e90:7e4e:7688:acea on wlp6s0
Gateway: 192.168.0.1 (Compal Broadband Networks, Inc.) on wlp6s0
fe80::5667:51ff:fedb:ac25 (Compal Broadband Networks, Inc.) on
State: n/a
Address: 192.168.0.52 on wlp6s0
2a02:8388:7001:5d80:4540:4576:28fd:3b58 on wlp6s0
2a02:8388:7001:5d80:754b:c96c:dc20:7b43 on wlp6s0
fe80::5e90:7e4e:7688:acea on wlp6s0
Gateway: 192.168.0.1 (Compal Broadband Networks, Inc.) on wlp6s0
fe80::5667:51ff:fedb:ac25 (Compal Broadband Networks, Inc.) on
rfkill
ID TYPE DEVICE SOFT HARD
0 wlan acer-wireless unblocked unblocked
2 wlan phy0 unblocked unblocked
4 bluetooth hci0 blocked unblocked
ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 39 Apr 25 23:10 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf
edit2:
Okay firstly I had `ping 8.8.8.8` running in the background while it went off.
64 bytes from 8.8.8.8: icmp_seq=566 ttl=122 time=18.3 ms
64 bytes from 8.8.8.8: icmp_seq=567 ttl=122 time=20.3 ms
ping: sendmsg: No buffer space available
ping: sendmsg: No buffer space available
*-network
description: Wireless interface
product: QCA6174 802.11ac Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlp6s0
version: 32
serial: 18:4f:32:b5:ca:cb
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=ath10k_pci driverversion=4.18.0-18-generic firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 ip=192.168.0.52 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:128 memory:94000000-941fffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:07:00.0
logical name: enp7s0
version: 15
serial: 30:65:ec:8a:a0:cd
size: 10Mbit/s
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 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:19 ioport:3000(size=256) memory:94204000-94204fff memory:94200000-94203fff
dmesg | grep -i wlp6s0
[ 15.392889] ath10k_pci 0000:06:00.0 wlp6s0: renamed from wlan0
[ 33.459583] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 34.197278] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 34.898963] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 39.792930] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 39.847542] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 39.868316] wlp6s0: authenticated
[ 39.872106] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 39.913957] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 39.917295] wlp6s0: associated
[ 40.621555] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
[ 5772.041721] wlp6s0: deauthenticating from 54:67:51:da:af:bf by local choice (Reason: 3=DEAUTH_LEAVING)
[ 5777.593015] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 5778.358382] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 5778.471103] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 5783.388233] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 5783.444693] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 5783.465210] wlp6s0: authenticated
[ 5783.466775] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 5783.508253] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 5783.511065] wlp6s0: associated
[ 5783.540761] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
[ 6169.007742] wlp6s0: deauthenticating from 54:67:51:da:af:bf by local choice (Reason: 3=DEAUTH_LEAVING)
[ 6174.676947] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 6175.444728] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 6175.559420] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 6180.450842] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 6180.505205] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 6180.525923] wlp6s0: authenticated
[ 6180.530653] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 6180.573152] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 6180.576150] wlp6s0: associated
[ 6180.604972] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
[ 6507.292646] wlp6s0: deauthenticating from 54:67:51:da:af:bf by local choice (Reason: 3=DEAUTH_LEAVING)
[ 6512.947438] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 6513.710596] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 6513.817718] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 6518.723552] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 6518.777723] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 6518.798235] wlp6s0: authenticated
[ 6518.798570] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 6518.839995] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 6518.842529] wlp6s0: associated
[ 6518.872491] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
[ 7213.465121] wlp6s0: deauthenticated from 54:67:51:da:af:bf (Reason: 4=DISASSOC_DUE_TO_INACTIVITY)
[ 7213.513877] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 7213.564154] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 7213.584967] wlp6s0: authenticated
[ 7213.588965] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 7213.631522] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 7213.634487] wlp6s0: associated
[ 7369.018698] wlp6s0: deauthenticating from 54:67:51:da:af:bf by local choice (Reason: 3=DEAUTH_LEAVING)
[ 7369.464133] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 7370.223353] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 7370.326891] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 7375.221841] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 7375.275592] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 7375.296914] wlp6s0: authenticated
[ 7375.300681] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 7375.343005] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 7375.346102] wlp6s0: associated
[ 7375.375993] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
[ 7753.050810] wlp6s0: deauthenticating from 54:67:51:da:af:bf by local choice (Reason: 3=DEAUTH_LEAVING)
[ 7758.505647] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 7759.259469] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 7759.381181] IPv6: ADDRCONF(NETDEV_UP): wlp6s0: link is not ready
[ 7764.284278] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 7764.338257] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 7764.360011] wlp6s0: authenticated
[ 7764.361525] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 7764.404107] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 7764.407021] wlp6s0: associated
[ 7764.436045] IPv6: ADDRCONF(NETDEV_CHANGE): wlp6s0: link becomes ready
[ 8675.862443] wlp6s0: deauthenticated from 54:67:51:da:af:bf (Reason: 4=DISASSOC_DUE_TO_INACTIVITY)
[ 8676.102072] wlp6s0: authenticate with 54:67:51:da:af:bf
[ 8676.152726] wlp6s0: send auth to 54:67:51:da:af:bf (try 1/3)
[ 8676.174711] wlp6s0: authenticated
[ 8676.178618] wlp6s0: associate with 54:67:51:da:af:bf (try 1/3)
[ 8676.220993] wlp6s0: RX AssocResp from 54:67:51:da:af:bf (capab=0x1511 status=0 aid=2)
[ 8676.224142] wlp6s0: associated