Arch Linux

TheReverend403

Member

From: Boston, UK

Registered: 2014-04-14

Posts: 4

Website

[Solved] Atheros device setting wrong CRDA, wireless now slow

As of this morning, my wireless is slow (1.2Mb/s when it's usually 38Mb/s). I haven't changed anything since it was last working properly (obviously, I was asleep). This has only started happening since I woke up this morning.

dmesg shows that it sets the correct CRDA first (GB), but then tries to intersect it with CN: http://paste.revthefox.co.uk/raw.php?id=53b6b895d5761

I have CRDA and wireless-regdb installed, with WIRELESS_REGDOM="GB" uncommented in /etc/conf.d/wireless-regdom

This is quite frustrating, as the device works fine with other OS' (Ubuntu livecd, Windows) and every other wireless device in my house works at full speed. I've also read a lot of forum posts about Atheros cards and CRDA issues, but none of the "fixes" worked for me.

Relevant sysinfo:

Kernel: 3.15.3-1-ck
Wireless device: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n (TP-Link TL-WN722n)
ath9k_htc mod info: http://paste.revthefox.co.uk/raw.php?id=53b6b9f556db1

Thanks in advance to anyone that can help.

Last edited by TheReverend403 (2014-07-04 22:38:00)

TheReverend403

Member

From: Boston, UK

Registered: 2014-04-14

Posts: 4

Website

Re: [Solved] Atheros device setting wrong CRDA, wireless now slow

Solved (sort of). Fixed by downgrading my kernel to 3.14.