一段时间以来，我注意到我的互联网速度变慢了。我仍然有很高的连接速度，但没有数据传输。重新启动计算机或手动关闭 wifi 然后重新打开可以暂时解决问题。一段时间后（无法说出是什么原因引起的），情况再次恶化。使用相同网络的其他设备没有同样的问题。
我查看了 pico /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf，它说
[connection]
wifi.powersave = 3
以下是今天的报告结束部分journalctl -b 0 -u NetworkManager——目前网络非常慢。
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1544] dhcp4 (wlo1): option dhcp_lease_time => '600'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1544] dhcp4 (wlo1): option domain_name_servers => '193.243.129.53 76.233.127.10'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1544] dhcp4 (wlo1): option expiry => '1686909281'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1544] dhcp4 (wlo1): option ip_address => '192.168.51.136'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_broadcast_address => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_domain_name => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_domain_name_servers => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_domain_search => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_host_name => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_interface_mtu => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_ms_classless_static_routes => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_nis_domain => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_nis_servers => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_ntp_servers => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_rfc3442_classless_static_routes => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1545] dhcp4 (wlo1): option requested_root_path => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option requested_routers => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option requested_static_routes => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option requested_subnet_mask => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option requested_time_offset => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option requested_wpad => '1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option routers => '192.168.48.1'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): option subnet_mask => '255.255.240.0'
Jun 16 11:44:41 x NetworkManager[1359]: <info> [1686908681.1546] dhcp4 (wlo1): state changed extended -> extended
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1562] dhcp4 (wlo1): option dhcp_lease_time => '600'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1563] dhcp4 (wlo1): option domain_name_servers => '193.243.129.53 76.233.127.10'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1563] dhcp4 (wlo1): option expiry => '1686909581'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1563] dhcp4 (wlo1): option ip_address => '192.168.51.136'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1564] dhcp4 (wlo1): option requested_broadcast_address => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1564] dhcp4 (wlo1): option requested_domain_name => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1564] dhcp4 (wlo1): option requested_domain_name_servers => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1564] dhcp4 (wlo1): option requested_domain_search => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1565] dhcp4 (wlo1): option requested_host_name => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1565] dhcp4 (wlo1): option requested_interface_mtu => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1565] dhcp4 (wlo1): option requested_ms_classless_static_routes => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1565] dhcp4 (wlo1): option requested_nis_domain => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1566] dhcp4 (wlo1): option requested_nis_servers => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1566] dhcp4 (wlo1): option requested_ntp_servers => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1566] dhcp4 (wlo1): option requested_rfc3442_classless_static_routes => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1566] dhcp4 (wlo1): option requested_root_path => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1566] dhcp4 (wlo1): option requested_routers => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1567] dhcp4 (wlo1): option requested_static_routes => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1567] dhcp4 (wlo1): option requested_subnet_mask => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1567] dhcp4 (wlo1): option requested_time_offset => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1568] dhcp4 (wlo1): option requested_wpad => '1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1568] dhcp4 (wlo1): option routers => '192.168.48.1'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1568] dhcp4 (wlo1): option subnet_mask => '255.255.240.0'
Jun 16 11:49:41 x NetworkManager[1359]: <info> [1686908981.1568] dhcp4 (wlo1): state changed extended -> extended
Jun 16 11:51:50 x NetworkManager[1359]: <info> [1686909110.3100] agent-manager: agent[2aea3b4d663942e2,:1.119/org.gnome.Shell.NetworkAgent/1000]: agent registered
ip link发现了三个设备：
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eno2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 00:d8:61:ee:8c:89 brd ff:ff:ff:ff:ff:ff
altname enp0s31f6
3: wlo1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
link/ether 5c:87:9c:8f:6d:44 brd ff:ff:ff:ff:ff:ff
altname wlp0s20f3
网络硬件
$ sudo lshw -C network
[sudo] password for x:
*-network:0
description: Wireless interface
product: Wireless-AC 9560 [Jefferson Peak]
vendor: Intel Corporation
physical id: 14.3
bus info: pci@0000:00:14.3
logical name: wlo1
version: 10
serial: 5c:87:9c:8f:6d:44
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.15.0-73-generic firmware=46.4d093a30.0 9000-pu-b0-jf-b0- ip=192.168.51.136 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:16 memory:b4334000-b4337fff
*-network:1
description: Ethernet interface
product: Ethernet Connection (7) I219-LM
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: eno2
version: 10
serial: 00:d8:61:ee:8c:89
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.15.0-73-generic firmware=0.5-4 latency=0 link=no multicast=yes port=twisted pair
resources: irq:126 memory:b4300000-b431ffff
和
$ iwconfig
lo no wireless extensions.
eno2 no wireless extensions.
wlo1 IEEE 802.11 ESSID:"DN-Guest"
Mode:Managed Frequency:5.32 GHz Access Point: 3C:41:0E:5D:46:ED
Bit Rate=173.3 Mb/s Tx-Power=9 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=56/70 Signal level=-54 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:23 Invalid misc:7 Missed beacon:0
网络消息
首先dmesg显示了两条消息：大量与 skype 相关的消息，以及这些wlo1消息。今天，问题又出现了（昨天还好），所以我展示的是今天的消息
sudo dmesg -T | grep -i wlo1:
[Wed Jun 28 11:58:28 2023] wlo1: authenticated
[Wed Jun 28 11:58:28 2023] wlo1: associate with 3c:41:0e:5d:46:ed (try 1/3)
[Wed Jun 28 11:58:29 2023] wlo1: RX ReassocResp from 3c:41:0e:5d:46:ed (capab=0x1111 status=0 aid=7)
[Wed Jun 28 11:58:29 2023] wlo1: associated
[Wed Jun 28 11:58:29 2023] wlo1: Limiting TX power to 9 dBm as advertised by 3c:41:0e:5d:46:ed
[Thu Jun 29 00:11:01 2023] wlo1: disassociated from 3c:41:0e:5d:46:ed (Reason: 1=UNSPECIFIED)
[Thu Jun 29 00:11:02 2023] wlo1: authenticate with 3c:41:0e:5d:60:ed
[Thu Jun 29 00:11:02 2023] wlo1: send auth to 3c:41:0e:5d:60:ed (try 1/3)
[Thu Jun 29 00:11:02 2023] wlo1: authenticated
[Thu Jun 29 00:11:02 2023] wlo1: associate with 3c:41:0e:5d:60:ed (try 1/3)
[Thu Jun 29 00:11:02 2023] wlo1: RX AssocResp from 3c:41:0e:5d:60:ed (capab=0x1111 status=0 aid=4)
[Thu Jun 29 00:11:02 2023] wlo1: associated
[Thu Jun 29 00:11:02 2023] wlo1: Limiting TX power to 9 dBm as advertised by 3c:41:0e:5d:60:ed
[Thu Jun 29 00:15:06 2023] wlo1: deauthenticated from 3c:41:0e:5d:60:ed (Reason: 8=DISASSOC_STA_HAS_LEFT)
[Thu Jun 29 00:15:06 2023] wlo1: authenticate with 3c:41:0e:5d:46:ed
[Thu Jun 29 00:15:06 2023] wlo1: send auth to 3c:41:0e:5d:46:ed (try 1/3)
[Thu Jun 29 00:15:06 2023] wlo1: authenticated
[Thu Jun 29 00:15:06 2023] wlo1: associate with 3c:41:0e:5d:46:ed (try 1/3)
[Thu Jun 29 00:15:06 2023] wlo1: RX AssocResp from 3c:41:0e:5d:46:ed (capab=0x1111 status=0 aid=1)
[Thu Jun 29 00:15:06 2023] wlo1: associated
[Thu Jun 29 00:15:06 2023] wlo1: Limiting TX power to 9 dBm as advertised by 3c:41:0e:5d:46:ed
以下是最近 10 分钟的 Skype 相关信息（还有更多）
[Thu Jun 29 09:33:06 2023] audit: type=1400 audit(1688023980.941:54223): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/virtual/net/lo/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:33:06 2023] audit: type=1400 audit(1688023980.941:54224): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:1f.6/net/eno2/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:33:06 2023] audit: type=1400 audit(1688023980.941:54225): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:14.3/net/wlo1/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:38:06 2023] audit: type=1400 audit(1688024280.936:54226): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/virtual/net/lo/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:38:06 2023] audit: type=1400 audit(1688024280.936:54227): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:1f.6/net/eno2/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:38:06 2023] audit: type=1400 audit(1688024280.936:54228): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:14.3/net/wlo1/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:43:06 2023] audit: type=1400 audit(1688024580.934:54229): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/virtual/net/lo/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:43:06 2023] audit: type=1400 audit(1688024580.934:54230): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:1f.6/net/eno2/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:43:06 2023] audit: type=1400 audit(1688024580.934:54231): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:14.3/net/wlo1/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:48:06 2023] audit: type=1400 audit(1688024880.937:54232): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/virtual/net/lo/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:48:06 2023] audit: type=1400 audit(1688024880.937:54233): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:1f.6/net/eno2/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:48:06 2023] audit: type=1400 audit(1688024880.937:54234): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:14.3/net/wlo1/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:53:06 2023] audit: type=1400 audit(1688025180.935:54235): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/virtual/net/lo/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:53:06 2023] audit: type=1400 audit(1688025180.939:54236): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:1f.6/net/eno2/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:53:06 2023] audit: type=1400 audit(1688025180.939:54237): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:14.3/net/wlo1/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:58:06 2023] audit: type=1400 audit(1688025480.933:54238): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/virtual/net/lo/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:58:06 2023] audit: type=1400 audit(1688025480.933:54239): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:1f.6/net/eno2/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[Thu Jun 29 09:58:06 2023] audit: type=1400 audit(1688025480.933:54240): apparmor="DENIED" operation="open" profile="snap.skype.skype" name="/sys/devices/pci0000:00/0000:00:14.3/net/wlo1/speed" pid=3651 comm="skypeforlinux" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0