sudden network drops

wolframen · 2022-04-06 19:27:56

Hi,
everytime I see these lines in journalctl -f, I completely lose internet connection for about 5 seconds, then it resumes and I can browse as usual

 Apr 06 21:17:33 arch-xmg dbus-daemon[747]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.3' (uid=0 pid=768 comm="/usr/bin/NetworkManager --no-daemon") 
 Apr 06 21:17:33 arch-xmg systemd[1]: Starting Network Manager Script Dispatcher Service...
 Apr 06 21:17:33 arch-xmg dbus-daemon[747]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
 Apr 06 21:17:33 arch-xmg systemd[1]: Started Network Manager Script Dispatcher Service.
 Apr 06 21:17:34 arch-xmg NetworkManager[768]: <info>  [1649272654.7106] dhcp4 (wlp0s20f3): state changed new lease, address=192.168.0.27
 Apr 06 21:17:35 arch-xmg geoclue[1834]: Failed to query location: Failed to query location: Error resolving “location.services.mozilla.com”: Der Name oder der Dienst ist nicht bekannt
 Apr 06 21:17:43 arch-xmg systemd[1]: NetworkManager-dispatcher.service: Deactivated successfully.

My network controller is an Intel Corporation Wi-Fi 6 AX201 (rev 20)

this is the output of

  $sudo dmesg | grep iwl

which may be related

 [38474.939311] iwlwifi 0000:00:14.3: reached 20 old SN frames from a0:ff:70:ad:ce:f8 on queue 7, stopping BA session on TID 0
 [38622.276866] iwlwifi 0000:00:14.3: reached 20 old SN frames from a0:ff:70:ad:ce:f8 on queue 7, stopping BA session on TID 0
 [93512.248777] iwlwifi 0000:00:14.3: reached 20 old SN frames from a0:ff:70:ad:ce:f8 on queue 7, stopping BA session on TID 0
 [93612.925513] iwlwifi 0000:00:14.3: reached 20 old SN frames from a0:ff:70:ad:ce:f8 on queue 7, stopping BA session on TID 0

If you need any additional info please ask. Thanks for reading.

Edit:

I just tried playing csgo with via usb-tethering over my phone, within the very same wwifi-network and not only did I not have any problems of the connection rupturing, I also had a far better ping, 30ms instead of the usual 160-disconnect.
In conclusion, it has to be an error on whether networkmanager, the driver of my network controller or anything related to it

Last edited by wolframen (2022-04-07 15:21:07)

Zod · 2022-04-06 22:08:15

Disconnect from the tether.

Connect with wifi.

And run this command...

find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f

Post the output here in code tags.

wolframen · 2022-04-07 14:31:49

thanks for trying to help, the output is

avahi-daemon.service                     | multi-user.target.wants
avahi-daemon.socket                      | sockets.target.wants
bluetooth.service                        | bluetooth.target.wants
cronie.service                           | multi-user.target.wants
cups.path                                | multi-user.target.wants
cups.service                             | printer.target.wants
cups.socket                              | sockets.target.wants
dbus-org.bluez.service                   | system
dbus-org.freedesktop.Avahi.service       | system
dbus-org.freedesktop.nm-dispatcher.service | system
default.target                           | system
dirmngr.socket                           | sockets.target.wants
display-manager.service                  | system
gcr-ssh-agent.socket                     | sockets.target.wants
getty@tty1.service                       | getty.target.wants
gpg-agent-browser.socket                 | sockets.target.wants
gpg-agent-extra.socket                   | sockets.target.wants
gpg-agent.socket                         | sockets.target.wants
gpg-agent-ssh.socket                     | sockets.target.wants
haveged.service                          | sysinit.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
ntpd.service                             | multi-user.target.wants
optimus-manager.service                  | graphical.target.wants
p11-kit-server.socket                    | sockets.target.wants
pacman-init.service                      | multi-user.target.wants
pipewire-media-session.service           | pipewire.service.wants
pipewire-session-manager.service         | user
pipewire.socket                          | sockets.target.wants
pulseaudio.socket                        | sockets.target.wants
remote-fs.target                         | multi-user.target.wants
snapd.socket                             | sockets.target.wants
tccd.service                             | multi-user.target.wants
tccd-sleep.service                       | sleep.target.wants
tlp.service                              | multi-user.target.wants
xdg-user-dirs-update.service             | default.target.wants

V1del · 2022-04-07 14:56:12

If you disable TLP/configure it to not enable power saving on your wifi device do things improve? FWIW Networkmanager-dispatcher simply gets triggered whenever there's a change in your connection (to run scripts in reaction to that change, e.g. I have a script that automounts some network share when I'm on a specific network, that's what NetworkManager-dispatcher is for), it does not have any relation to whatever actual condition makes you lose/have that change in connection

Last edited by V1del (2022-04-07 15:00:32)

wolframen · 2022-04-07 15:22:10

V1del wrote:

disable TLP

disabled tlp, reboot, still the same :/

seth · 2022-04-07 20:03:49

Please post a complete system journal covering such connection losses, "sudo journalctl -b | curl -F 'file=@-' 0x0.st"

wolframen · 2022-04-17 21:57:11

seth wrote:

Please post a complete system journal covering such connection losses, "sudo journalctl -b | curl -F 'file=@-' 0x0.st"

[deleted]

Last edited by wolframen (2022-05-04 11:48:27)

seth · 2022-04-18 06:21:17

Apr 15 17:23:02 arch-xmg kernel: wlp0s20f3: disconnect from AP f0:b0:14:73:3b:aa for new auth to f0:b0:14:73:3b:a9
Apr 15 17:23:37 arch-xmg kernel: wlp0s20f3: disconnect from AP f0:b0:14:73:3b:a9 for new auth to f0:b0:14:73:3b:aa
Apr 17 20:53:22 arch-xmg kernel: wlp0s20f3: disconnect from AP a0:ff:70:ad:cf:00 for new auth to a0:ff:70:ad:ce:f8
Apr 17 20:35:02 arch-xmg kernel: wlp0s20f3: disconnect from AP a0:ff:70:ad:ce:f8 for new auth to a0:ff:70:ad:cf:00
…

You're constantly switching between 2.4GHz and 5GHz:
- f0:b0:14:73:3b:aa (SSID='WLAN-FB8039' freq=5200 MHz)
- f0:b0:14:73:3b:a9 (SSID='WLAN-FB8039' freq=2432 MHz)
- a0:ff:70:ad:ce:f8 (SSID='Vodafone-CEF4' freq=2412 MHz)
- a0:ff:70:ad:cf:00 (SSID='Vodafone-CEF4' freq=5540 MHz)

https://www.bitblokes.de/24-ghz-oder-5- … erzwingen/ (german, but there's a dialog screenshot) suggests that NM has a connection setting to prefer one of the bands.

archladyQ · 2022-07-11 11:22:46

I got the some problem.
The wired network will hold about 30 seconds,I found the logs like yours,I use lsof -i UDP and tcpdump to find the NetworkManager will send the the dhcp request at the some time,I don't known the reason,so I install the dhcpcd then solved the problem.Dhcpcd can work fine with NetworkManager.
Good luck.

seth · 2022-07-11 12:32:48

Dhcpcd can work fine with NetworkManager.

If you want to use dhcpcd as dhcp client for NM see https://wiki.archlinux.org/title/Networ … HCP_client
Do NOT run networkmanager and dhcpcd services in parallel!

Arch Linux

#1 2022-04-06 19:27:56

sudden network drops

#2 2022-04-06 22:08:15

Re: sudden network drops

#3 2022-04-07 14:31:49

Re: sudden network drops

#4 2022-04-07 14:56:12

Re: sudden network drops

#5 2022-04-07 15:22:10

Re: sudden network drops

#6 2022-04-07 20:03:49

Re: sudden network drops

#7 2022-04-17 21:57:11

Re: sudden network drops

#8 2022-04-18 06:21:17

Re: sudden network drops

#9 2022-07-11 11:22:46

Re: sudden network drops

#10 2022-07-11 12:32:48

Re: sudden network drops

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