Arch Linux

esauvisky

Member

Registered: 2014-06-23

Posts: 11

[SOLVED] ath9k devices make internet slow with linux 3.15.1

I connect to the internet via a wireless usb dongle, specifically an Atheros AR9271, which uses ath9k firmwares.
Recently, I've noticed that my internet was much slower. I couldn't watch 720p YouTube videos, pages took more than usual to load and even my router configuration page was slow (a 60k image was taking a few seconds to load).
The problem didn't happen when connecting via an ethernet cable, though.

After a couple of hours fiddling and searching for bugs, I've found out that it's related somehow to the new 3.15.1 kernel. I've downgraded to 3.14.5 and the problem is gone.

I would like to research this matter though, and, ultimately, go back to using the new kernel.
Does anyone knows if this bug is reported somewhere else? What can I do to further troubleshoot it?

Last edited by esauvisky (2014-06-23 13:09:11)

lolilolicon

Member

Registered: 2009-03-05

Posts: 1,722

Re: [SOLVED] ath9k devices make internet slow with linux 3.15.1

My USB AR9271 wireless NIC, which uses the ath9k_htc module, fails to connect to the AP completely, after updating linux to 3.15.1.
Someone reported the same problem here: https://bbs.archlinux.org/viewtopic.php?id=183126

---

This silver ladybug at line 28...

agapito

Member

From: Who cares.

Registered: 2008-11-13

Posts: 641

Re: [SOLVED] ath9k devices make internet slow with linux 3.15.1

My USB AR9271 wireless NIC, which uses the ath9k_htc module, fails to connect to the AP completely, after updating linux to 3.15.1.
Someone reported the same problem here: https://bbs.archlinux.org/viewtopic.php?id=183126

This should be work:

sudo nano /etc/modprobe.d/ath9k_htc.conf
options ath9k_htc nohwcrypt=1

Reboot.

---

Excuse my poor English.

esauvisky

Member

Registered: 2014-06-23

Posts: 11

Re: [SOLVED] ath9k devices make internet slow with linux 3.15.1

My USB AR9271 wireless NIC, which uses the ath9k_htc module, fails to connect to the AP completely, after updating linux to 3.15.1.
Someone reported the same problem here: https://bbs.archlinux.org/viewtopic.php?id=183126

This should be work:

sudo nano /etc/modprobe.d/ath9k_htc.conf
options ath9k_htc nohwcrypt=1

Reboot.

That did the trick for fixing the slow speed as well.
By the way, I've tried doing that before, but for some reason I was passing nohwcrypt to ath9k instead of ath9k_htc, which seems to be the new (?) firmware. So if you're still unlucky check with both