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Magician Merlin

Member

Registered: 2017-05-16

Posts: 26

[SOLVED] Pacman Wifi slow, cable fast

Hi all,
I have a weird issue. For the last months I recognized that pacman downloads packages extremely slow, when using wifi instead of ethernet via cable.

A speedtest also confirms that I have 250Mbit available. When using a cable, pacman downloads packages with approx. 30MiBytes, that almost uses the complete capacity. But when I use wifi (via NetworkManager), The average download speed is approx. 1MiBytes.

Is that a known issue?
Does anybody have an idea how to solve that issue?

Thank you in advance!

Last edited by Magician Merlin (2024-09-25 18:56:10)

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 12,930

Re: [SOLVED] Pacman Wifi slow, cable fast

Please post the full outputs of

$ lspci -k
$ journalctl -b | | curl -F 'file=@-' 0x0.st
$ 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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Magician Merlin

Member

Registered: 2017-05-16

Posts: 26

Re: [SOLVED] Pacman Wifi slow, cable fast

Thanks for your response!
Here is the outout:

$ lspci -k

Output:

00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: skl_uncore
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 05)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: pcieport
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
        Subsystem: Lenovo Device 224d
00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: xhci_hcd
        Kernel modules: xhci_pci
00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: intel_pch_thermal
        Kernel modules: intel_pch_thermal
00:15.0 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller #0 (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: intel-lpss
        Kernel modules: intel_lpss_pci
00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: mei_me
        Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation Q170/Q150/B150/H170/H110/Z170/CM236 Chipset SATA Controller [AHCI Mode] (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: ahci
00:1c.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #1 (rev f1)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: pcieport
00:1c.2 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #3 (rev f1)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: pcieport
00:1c.4 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #5 (rev f1)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: pcieport
00:1d.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #9 (rev f1)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: pcieport
00:1d.4 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #13 (rev f1)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation CM238 Chipset LPC/eSPI Controller (rev 31)
        Subsystem: Lenovo Device 224d
00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller (rev 31)
        Subsystem: Lenovo Device 224d
00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel, snd_soc_avs
00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: i801_smbus
        Kernel modules: i2c_i801
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (5) I219-V (rev 31)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: e1000e
        Kernel modules: e1000e
01:00.0 VGA compatible controller: NVIDIA Corporation GM107GLM [Quadro M1200 Mobile] (rev a2)
        Subsystem: Lenovo Device 2251
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia
01:00.1 Audio device: NVIDIA Corporation GM107 High Definition Audio Controller [GeForce 940MX] (rev a1)
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
04:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
        Subsystem: Intel Corporation Dual Band Wireless-AC 8265
        Kernel driver in use: iwlwifi
        Kernel modules: iwlwifi
3e:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
        Subsystem: Samsung Electronics Co Ltd SSD 970 EVO/PRO
        Kernel driver in use: nvme
        Kernel modules: nvme
3f:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
        Subsystem: Lenovo Device 224d
        Kernel driver in use: rtsx_pci
        Kernel modules: rtsx_pci

$ journalctl -b | | curl -F 'file=@-' 0x0.st

For privacy reasons I post it as DM - quite verbose.

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

Output:

acpid.service                            | multi-user.target.wants
avahi-daemon.service                     | multi-user.target.wants
avahi-daemon.socket                      | sockets.target.wants
bluetooth.service                        | bluetooth.target.wants
cpupower-gui.service                     | multi-user.target.wants
cups.path                                | multi-user.target.wants
cups.service                             | 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
dbus-org.freedesktop.timesync1.service   | system
dbus-org.rnd2.cpupower_gui.helper.service | system
display-manager.service                  | system
docker.service                           | multi-user.target.wants
gcr-ssh-agent.socket                     | sockets.target.wants
getty@tty1.service                       | getty.target.wants
gitlab-runner.service                    | multi-user.target.wants
gnome-keyring-daemon.socket              | sockets.target.wants
libvirtd-ro.socket                       | sockets.target.wants
libvirtd.service                         | multi-user.target.wants
libvirtd.socket                          | sockets.target.wants
mariadb.service                          | multi-user.target.wants
NetworkManager.service                   | multi-user.target.wants
NetworkManager-wait-online.service       | network-online.target.wants
p11-kit-server.socket                    | sockets.target.wants
pcscd.socket                             | sockets.target.wants
pipewire-media-session.service           | pipewire.service.wants
pipewire-session-manager.service         | user
pipewire.socket                          | sockets.target.wants
postgresql.service                       | multi-user.target.wants
pulseaudio.socket                        | sockets.target.wants
reflector.service                        | multi-user.target.wants
remote-fs.target                         | multi-user.target.wants
systemd-timesyncd.service                | sysinit.target.wants
teamviewerd.service                      | multi-user.target.wants
tlp.service                              | multi-user.target.wants
ufw.service                              | multi-user.target.wants
virtlockd.socket                         | sockets.target.wants
virtlogd.socket                          | sockets.target.wants
watchdog.service                         | multi-user.target.wants
xdg-user-dirs-update.service             | default.target.wants

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,200

Re: [SOLVED] Pacman Wifi slow, cable fast

...The average download speed is approx. 1MiBytes.

Is that a known issue?

Nope, and Intel WiFi are generally well supported.

From my system:

ewaller@odin/~% iw dev wlan0 station dump
Station 6c:4b:b4:ef:67:e8 (on wlan0)
        inactive time:  257 ms
        rx bytes:       2004976354
        rx packets:     1604125
        tx bytes:       23202467
        tx packets:     137191
        tx retries:     21026
        tx failed:      0
        beacon loss:    0
        beacon rx:      145109
        rx drop misc:   12148
        signal:         -56 [-56, -58] dBm
        signal avg:     -58 dBm
        beacon signal avg:      -48 dBm
        tx bitrate:     1225.0 MBit/s 160MHz HE-MCS 6 HE-NSS 2 HE-GI 1 HE-DCM 0
        tx duration:    0 us
        rx bitrate:     1729.6 MBit/s 160MHz HE-MCS 8 HE-NSS 2 HE-GI 0 HE-DCM 0
        rx duration:    0 us
        authorized:     yes
        authenticated:  yes
        associated:     yes
        preamble:       long
        WMM/WME:        yes
        MFP:            yes
        TDLS peer:      no
        DTIM period:    3
        beacon interval:100
        short slot time:yes
        connected time: 14980 seconds
        associated at [boottime]:       73947.547s
        associated at:  1727015824588 ms
        current time:   1727030804582 ms
ewaller@odin/~% 

Note the speeds.  What does that command give on your system (you may have to change wlan0 to whatever it called on your system)

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seth

Member

Registered: 2012-09-03

Posts: 58,717

Re: [SOLVED] Pacman Wifi slow, cable fast

Unless there's a selective issue w/ ufw or libvirt (rules/config only applying to the wifi NIC) my money is on tlp and general power saving.

systool -vm iwlwifi
systool -vm iwlmvm
iw dev <device> get power_save
iw dev <device> set power_save off

Unrelated

pipewire-media-session.service           | pipewire.service.wants
pipewire-session-manager.service         | user
pulseaudio.socket                        | sockets.target.wants

https://archlinux.org/packages/extra/x8 … ire-pulse/
https://archlinux.org/packages/extra/x8 … replumber/

Don't run PW and PA in parallel and the general advice is to replace PWMS w/ wireplumber

For privacy reasons I post it as DM - quite verbose.

The journal isn't supposed to contain sensitive data, but

journalctl -b | | curl -F 'file=@-' 0x0.st

bash: syntax error near unexpected token `|'

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Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 12,930

Re: [SOLVED] Pacman Wifi slow, cable fast

typing part of a command and then adding another part through c/p sometimes gives such results.

Magician Merlin noticed it and corrected the command

A few points :

no nvidia_drm.modeset=1 as kernel parameter

Sep 22 19:43:30 ThinkPad kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.EC.HKEY.DEVT.PEGS], AE_NOT_FOUND (20240322/psargs-330)
Sep 22 19:43:30 ThinkPad kernel: ACPI Error: Aborting method \_SB.PCI0.LPCB.EC.HKEY.DEVT due to previous error (AE_NOT_FOUND) (20240322/psparse-529)
Sep 22 19:43:30 ThinkPad kernel: ACPI Error: Aborting method \_SB.PCI0.LPCB.EC._Q4F due to previous error (AE_NOT_FOUND) (20240322/psparse-529)
Sep 22 19:43:30 ThinkPad kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.LPCB.EC.HKEY.DEVT.PEGS], AE_NOT_FOUND (20240322/psargs-330)
Sep 22 19:43:30 ThinkPad kernel: ACPI Error: Aborting method \_SB.PCI0.LPCB.EC.HKEY.DEVT due to previous error (AE_NOT_FOUND) (20240322/psparse-529)
Sep 22 19:43:30 ThinkPad kernel: ACPI Error: Aborting method \_SB.PCI0.LPCB.EC._Q4E due to previous error (AE_NOT_FOUND) (20240322/psparse-529)

The journal shows lots of similar/same  errors multiple times.

It appears NM creates a lot of virbr* entries

mattermost-desktop seems to use electron and has trouble connecting

Sep 22 19:43:30 ThinkPad mattermost-desktop[2226]: 19:43:30.823 › [App.Utils] Could not get server info for MyName Error: net::ERR_INTERNET_DISCONNECTED
Sep 22 19:43:30 ThinkPad mattermost-desktop[2226]:     at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:115199)
Sep 22 19:43:30 ThinkPad mattermost-desktop[2226]:     at SimpleURLLoaderWrapper.emit (node:events:519:28)
Sep 22 19:43:30 ThinkPad mattermost-desktop[2226]: 19:43:30.831 › [App.Config] config.autostart has been configured: true

Sep 22 19:42:53 ThinkPad kernel: DMI: LENOVO 20HH001QGE/20HH001QGE, BIOS N1UET80W (1.54 ) 11/05/2020

Magician Merlin , is this  a laptop and what do you use it for ?

I do think you should show a fresh journal to more people.

Last edited by Lone_Wolf (2024-09-23 16:05:23)

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

Magician Merlin

Member

Registered: 2017-05-16

Posts: 26

Re: [SOLVED] Pacman Wifi slow, cable fast

sorry for the delayed response.
I'm currently quite busy...

@Lone_Wolf: Yes, it is a laptop. unfortunately with dedicated NVIDIA graphics, I had trouble with that under linux since ever :-D
Since I use it for business tasks, I do not feel very comfortable with making the journals completely public...
It contains domains, names, usernames, etc. that are confidential.
I tried to prune it by the most important ones, but I cannot assure that it is completely clean...
I know it should not contain secrets, but it will reveal some details...
I will have a look into that and maybe I will share it after that...

Magician Merlin

Member

Registered: 2017-05-16

Posts: 26

Re: [SOLVED] Pacman Wifi slow, cable fast

Unless there's a selective issue w/ ufw or libvirt (rules/config only applying to the wifi NIC) my money is on tlp and general power saving.

You won the bet!
After I disabled power_save for the wifi device by using

iw dev <device> set power_save off

it worked perfectly...
With well wifi connection the speed was the same as using the ethernet cable...

To disable the power_saving for the device permanently I have to change the tlp settings i guess?
I will dig into that...

Thanks a lot!

Don't run PW and PA in parallel and the general advice is to replace PWMS w/ wireplumber

Thanks for the hint!
I will have a look at this.
As far as I see it came as a dependency of obs-studio, kwin and telegram-desktop.
...and pulseaudio came with plasma-meta...

Would you recommend to just deactivate the pulseaudio service, or did I get it wrong?

Last edited by Magician Merlin (2024-09-25 18:09:38)

seth

Member

Registered: 2012-09-03

Posts: 58,717

Re: [SOLVED] Pacman Wifi slow, cable fast

Just install pipewire-pulse, it'll provide the PA dependency.
Likewise nothing in the repos hard-depends on pipewire-media-session, you can replace it w/ wireplumber.

To disable the power_saving for the device permanently I have to change the tlp settings i guess?

TLP will most likely take precedence over any udev rule and the default setting, yes.
If there's no such setting, you can just add a udev rule as in https://wiki.archlinux.org/title/Power_ … interfaces - except setting it "off" rather than the illustrated "on".

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