Arch Linux

Sweenu

Member

Registered: 2016-12-08

Posts: 27

WIFI: very low download speeds, normal upload speeds

Hello !

I just bought a wifi card for my desktop computer with the AX210 chipset.
I have normal upload speeds (60 Mbits, which is the max allowed by my ISP) but I have no more than 10 Mbits of download speed. For comparison, I have more than 500 Mbits with my laptop or my phone at the same place my desktop is.

I use the latest kernel (5.16) but have tried with kernel 5.15 also. I tried changing the following options for iwlwifi: disable_11ax, disable_11ac, bt_coex_active, 11n_disable, swcrypto but to no avail.
I’m using the 5Ghz band.

Also, my motherboard is old: Specification H61M-E33 (B3) | MSI Global - The Leading Brand in High-end Gaming & Professional Creation
Anyway, I don’t really know where to look anymore, so I’m looking for help.
Could my pcie slot somehow have a problem where outgoing speed is working whereas incoming is broken?
My next step would be to install windows to make sure it’s a linux problem but I want to avoid that if possible …

I_Use_Arch_BTW45

Member

Registered: 2021-12-05

Posts: 42

Re: WIFI: very low download speeds, normal upload speeds

try passing your wifi card to a windows vm, using kvm + virt-manager
if its not a problem in windows maybe try an older more stable distro like ubuntu

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,838

Re: WIFI: very low download speeds, normal upload speeds

https://bbs.archlinux.org/viewtopic.php?id=269585 but even https://bbs.archlinux.org/viewtopic.php … 0#p1951800
TSO is reported to cause slowdowns for older chips, https://bbs.archlinux.org/viewtopic.php … 9#p1946349

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Sweenu

Member

Registered: 2016-12-08

Posts: 27

Re: WIFI: very low download speeds, normal upload speeds

Disabling TSO tripled my download speed! I'm still far from the 500 Mbps and it's still half of my upload speed, so there is still another problem, but at least it's better.

Edit: Actually it did that on one test but now I cannot reproduce, it came back to 10 Mbps...

Last edited by Sweenu (2022-02-09 10:14:37)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 75,838

Re: WIFI: very low download speeds, normal upload speeds

ftr, https://bbs.archlinux.org/viewtopic.php?id=269585
https://community.intel.com/t5/Wireless … -p/1250409 complains about 5GHz - do you get better performance on 2.4GHz?

Do you use wpa3 (and can you limit the AP to wpa2 for a test)?
https://community.intel.com/t5/Wireless … -p/1268696

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Sweenu

Member

Registered: 2016-12-08

Posts: 27

Re: WIFI: very low download speeds, normal upload speeds

I use wpa2, and have worse performance with 2.4GHz
I also tried using 5.17-rc4 but to no avail, it's still the same...