Arch Linux

Laghero

Member

Registered: 2022-04-11

Posts: 5

Frequent Wifi Lag

I'm having issues with wifi lagging out for at least a month now and I can't figure out why. I've not changed my setting and I've been keeping everything up to date.

It can run fine for a while and then get very laggy or just completely stop working as seen with the pings

64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=183 ttl=114 time=38.7 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=184 ttl=114 time=43.9 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=185 ttl=114 time=38.8 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=186 ttl=114 time=36.7 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=187 ttl=114 time=42.2 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=188 ttl=114 time=35.6 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=189 ttl=114 time=39.0 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=190 ttl=114 time=35.5 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=191 ttl=114 time=35.7 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=192 ttl=114 time=33.5 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=193 ttl=114 time=41.2 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=194 ttl=114 time=38.9 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=195 ttl=114 time=32.1 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=196 ttl=114 time=35.5 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=197 ttl=114 time=33.1 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=198 ttl=114 time=4438 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=199 ttl=114 time=4252 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=200 ttl=114 time=3240 ms
64 bytes from lhr25s25-in-f14.1e100.net (216.58.213.14): icmp_seq=201 ttl=114 time=2332 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=202 ttl=114 time=4084 ms
From Spymaster (192.168.1.66) icmp_seq=236 Destination Port Unreachable
ping: sendmsg: Operation not permitted
From Spymaster (192.168.1.66) icmp_seq=237 Destination Port Unreachable
ping: sendmsg: Operation not permitted
From Spymaster (192.168.1.66) icmp_seq=238 Destination Port Unreachable
ping: sendmsg: Operation not permitted
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=239 ttl=114 time=31.8 ms
64 bytes from ber01s14-in-f14.1e100.net (216.58.213.14): icmp_seq=240 ttl=114 time=31.4 ms

journalctl -f gives this when some of the wifi issues pop up.

Apr 11 19:47:49 Spymaster kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc040071b
Apr 11 19:48:27 Spymaster rtkit-daemon[775]: Supervising 9 threads of 5 processes of 1 users.
Apr 11 19:48:27 Spymaster rtkit-daemon[775]: Supervising 9 threads of 5 processes of 1 users.
Apr 11 19:48:39 Spymaster rtkit-daemon[775]: Supervising 9 threads of 5 processes of 1 users.
Apr 11 19:48:39 Spymaster rtkit-daemon[775]: Supervising 9 threads of 5 processes of 1 users.
Apr 11 19:49:04 Spymaster kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc040071b
Apr 11 19:49:15 Spymaster rtkit-daemon[775]: Supervising 9 threads of 5 processes of 1 users.
Apr 11 19:49:15 Spymaster rtkit-daemon[775]: Supervising 9 threads of 5 processes of 1 users.
Apr 11 19:49:49 Spymaster kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc040071b
Apr 11 19:49:49 Spymaster kernel: iwlwifi 0000:00:14.3: Unhandled alg: 0xc040071b

lspci info gives this

00:00.0 Host bridge: Intel Corporation 8th Gen Core 4-core Processor Host Bridge/DRAM Registers [Coffee Lake H] (rev 07)
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation CoffeeLake-H GT2 [UHD Graphics 630]
00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem (rev 07)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Cannon Lake PCH Thermal Controller (rev 10)
00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
00:14.3 Network controller: Intel Corporation Cannon Lake PCH CNVi WiFi (rev 10)
00:15.0 Serial bus controller: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #0 (rev 10)
00:15.1 Serial bus controller: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #1 (rev 10)
00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
00:17.0 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 10)
00:1b.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #21 (rev f0)
00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #14 (rev f0)
00:1f.0 ISA bridge: Intel Corporation HM470 Chipset LPC/eSPI Controller (rev 10)
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
00:1f.5 Serial bus controller: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller (rev a1)
02:00.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
03:00.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
03:01.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
03:02.0 PCI bridge: Intel Corporation JHL6340 Thunderbolt 3 Bridge (C step) [Alpine Ridge 2C 2016] (rev 02)
3a:00.0 USB controller: Intel Corporation JHL6340 Thunderbolt 3 USB 3.1 Controller (C step) [Alpine Ridge 2C 2016] (rev 02)
3b:00.0 Ethernet controller: Qualcomm Atheros Killer E2400 Gigabit Ethernet Controller (rev 10)

Does anybody has any ideas what to check or do? I don't have too much time to mess about with this.

seth

Member

Registered: 2012-09-03

Posts: 51,479

Re: Frequent Wifi Lag

https://bbs.archlinux.org/viewtopic.php?id=272848
iwd or wpa_supplicant?

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Laghero

Member

Registered: 2022-04-11

Posts: 5

Re: Frequent Wifi Lag

I am using wpa_supplicant and NetworkManager

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,801

Re: Frequent Wifi Lag

Are the services both enabled?  They shouldn't be.

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Laghero

Member

Registered: 2022-04-11

Posts: 5

Re: Frequent Wifi Lag

systemctl is-active returns active for both.

seth

Member

Registered: 2012-09-03

Posts: 51,479

Re: Frequent Wifi Lag

That doesn't necessarily answer the question.

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

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Laghero

Member

Registered: 2022-04-11

Posts: 5

Re: Frequent Wifi Lag

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

returns

dbus-org.freedesktop.nm-dispatcher.service | 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
mullvad-daemon.service                   | multi-user.target.wants
mullvad-daemon.service                   | system
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
ntpd.service                             | multi-user.target.wants
p11-kit-server.socket                    | sockets.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
xdg-user-dirs-update.service             | default.target.wants

seth

Member

Registered: 2012-09-03

Posts: 51,479

Re: Frequent Wifi Lag

wpa_supplicant is invoked by NM, as it should be.
Looking at the output: lose the VPN - still a problem?

The journal snippet you posted points towards roaming - does your AP provide 2.4 and 5GHz and does the problem remain if you disable one of them?

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Laghero

Member

Registered: 2022-04-11

Posts: 5

Re: Frequent Wifi Lag

I've been testing with the VPN connected and disconnected. I've completely disabled the service which I didn't think to do previously. Currently, I haven't had a lag spike, but I'll continue testing and update later.