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#1 2022-03-18 14:23:47

Obistron
Member
Registered: 2021-12-20
Posts: 12

slow wifi

Guys I have a problem in the connection speed to the University WiFi, on the windows laptop I have a speed of about 50Mbps, on the laptop with arch I have about 2Mbps.  Could you tell me what problem I might have? 

With home WiFi I don't have this problem


I tried to set sysctl net.ipv4.tcp_ecn from 2 to 0 but nothing has changed.

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#2 2022-03-18 21:59:22

paulkerry
Member
From: Sheffield, UK
Registered: 2014-10-02
Posts: 611

Re: slow wifi

There's nothing for us to go on here: wireless make and driver for a start would help.
Does anything on https://wiki.archlinux.org/title/Networ … n/Wireless help you?

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#3 2022-03-22 14:40:49

Obistron
Member
Registered: 2021-12-20
Posts: 12

Re: slow wifi

paulkerry wrote:

There's nothing for us to go on here: wireless make and driver for a start would help.
Does anything on https://wiki.archlinux.org/title/Networ … n/Wireless help you?

when I run: sudo dmesg | grep firmware
I have this:
[    5.773374] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2

Could this be a problem?

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#4 2022-03-22 14:45:46

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 18,391

Re: slow wifi

Let's start at a more basic level.
What is the output of iwconfig  ?   [requires wireless-tools]


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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#5 2022-03-22 14:48:10

Obistron
Member
Registered: 2021-12-20
Posts: 12

Re: slow wifi

ewaller wrote:

Let's start at a more basic level.
What is the output of iwconfig  ?   [requires wireless-tools]

iwconfig
lo        no wireless extensions.

enp3s0    no wireless extensions.

wlp2s0    IEEE 802.11  ESSID:"UNICAmente" 
          Mode:Managed  Frequency:2.437 GHz  Access Point: E4:AA:5D:9C:66:40   
          Bit Rate=65 Mb/s   Tx-Power=10 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          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:242   Missed beacon:0

vmnet1    no wireless extensions.

vmnet8    no wireless extensions.

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#6 2022-03-23 13:25:38

Ashiix
Member
Registered: 2020-03-21
Posts: 19

Re: slow wifi

Been having a similar issue, the issue isn't that the WiFi is slow, it's spontaneous connecting and disconnecting. This issue appears on both NetworkManager and systemd-networkd, with either wpa_supplicant and iwd. A bunch of networking relating packages just got updated, so I assume the issue was known and patched. I'd recommend just connecting via ethernet, updating, and rebooting. Should fix the issue.

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#7 2022-03-23 13:29:46

Obistron
Member
Registered: 2021-12-20
Posts: 12

Re: slow wifi

Ashiix wrote:

Been having a similar issue, the issue isn't that the WiFi is slow, it's spontaneous connecting and disconnecting. This issue appears on both NetworkManager and systemd-networkd, with either wpa_supplicant and iwd. A bunch of networking relating packages just got updated, so I assume the issue was known and patched. I'd recommend just connecting via ethernet, updating, and rebooting. Should fix the issue.

When I connect to the wifi at home I have no problem.
Also my pc is up to date.

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#8 2022-03-23 13:41:57

Ashiix
Member
Registered: 2020-03-21
Posts: 19

Re: slow wifi

Obistron wrote:

When I connect to the wifi at home I have no problem.
Also my pc is up to date.

Your university network is vastly different from your home network, there are many variables at play and issues could absolutely arise on one and not the other.
About your laptop being up to date, I'd say try updating again with (sudo/doas) pacman -Syu.

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#9 2022-03-23 13:46:08

paulkerry
Member
From: Sheffield, UK
Registered: 2014-10-02
Posts: 611

Re: slow wifi

Like I said...

paulkerry wrote:

wireless make and driver for a start would help.

If you don't know what that is, use this command as root and post that output here...

lspci -k -v

Last edited by paulkerry (2022-03-23 13:46:29)

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#10 2022-03-23 13:53:54

Obistron
Member
Registered: 2021-12-20
Posts: 12

Re: slow wifi

Ashiix wrote:
Obistron wrote:

When I connect to the wifi at home I have no problem.
Also my pc is up to date.

Your university network is vastly different from your home network, there are many variables at play and issues could absolutely arise on one and not the other.
About your laptop being up to date, I'd say try updating again with (sudo/doas) pacman -Syu.

I update the system every day, has you said, probably the problem is related to the uni network.

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#11 2022-03-23 13:54:29

Obistron
Member
Registered: 2021-12-20
Posts: 12

Re: slow wifi

paulkerry wrote:

Like I said...

paulkerry wrote:

wireless make and driver for a start would help.

If you don't know what that is, use this command as root and post that output here...

lspci -k -v

lspci -k -v
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
        Subsystem: ASUSTeK Computer Inc. Device 117d
        Flags: bus master, fast devsel, latency 0
        Capabilities: <access denied>


00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
        Subsystem: ASUSTeK Computer Inc. Device 117d
        Flags: bus master, fast devsel, latency 0, IRQ 26
        Memory at f7e1a000 (64-bit, non-prefetchable) [size=16]
        Capabilities: <access denied>
        Kernel driver in use: mei_me
        Kernel modules: mei_me


00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: [disabled]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: [disabled]
        Memory behind bridge: f7d00000-f7dfffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport

00:1c.3 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 4 (rev c4) (prog-if 00 [Normal decode])
        Flags: bus master, fast devsel, latency 0, IRQ 19
        Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
        I/O behind bridge: 0000e000-0000efff [size=4K]
        Memory behind bridge: f7c00000-f7cfffff [size=1M]
        Prefetchable memory behind bridge: [disabled]
        Capabilities: <access denied>
        Kernel driver in use: pcieport


00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
        Subsystem: ASUSTeK Computer Inc. Device 117d
        Flags: bus master, medium devsel, latency 0
        Capabilities: <access denied>
        Kernel driver in use: lpc_ich
        Kernel modules: lpc_ich


02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
        Subsystem: AzureWave AW-NE186H
        Flags: bus master, fast devsel, latency 0, IRQ 17
        Memory at f7d00000 (64-bit, non-prefetchable) [size=512K]
        Expansion ROM at f7d80000 [disabled] [size=64K]
        Capabilities: <access denied>
        Kernel driver in use: ath9k
        Kernel modules: ath9k

03:00.0 Ethernet controller: Qualcomm Atheros AR8161 Gigabit Ethernet (rev 10)
        Subsystem: ASUSTeK Computer Inc. Device 201f
        Flags: bus master, fast devsel, latency 0, IRQ 19
        Memory at f7c00000 (64-bit, non-prefetchable) [size=256K]
        I/O ports at e000 [size=128]
        Capabilities: <access denied>
        Kernel driver in use: alx
        Kernel modules: alx

Last edited by Obistron (2022-03-23 13:59:48)

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#12 2022-03-25 09:23:22

paulkerry
Member
From: Sheffield, UK
Registered: 2014-10-02
Posts: 611

Re: slow wifi

Obistron wrote:

02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
         Kernel modules: ath9k

Same Atheros and similar chip being affected by https://bugs.archlinux.org/task/74187
What you might be seeing is continuous disconnects/reconnects leading to a general slowdown.

Please post output like the lspci output in code tags so we don't have to scroll on and on.

Last edited by paulkerry (2022-03-25 09:24:47)

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#13 2022-03-27 09:46:02

Obistron
Member
Registered: 2021-12-20
Posts: 12

Re: slow wifi

paulkerry wrote:
Obistron wrote:

02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
         Kernel modules: ath9k

Same Atheros and similar chip being affected by https://bugs.archlinux.org/task/74187
What you might be seeing is continuous disconnects/reconnects leading to a general slowdown.

Please post output like the lspci output in code tags so we don't have to scroll on and on.

❯ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 4 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM76 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
02:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
03:00.0 Ethernet controller: Qualcomm Atheros AR8161 Gigabit Ethernet (rev 10)

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