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Yggdrasil

Member

Registered: 2009-07-21

Posts: 37

packet losses with Atheros AR2413 and ath5k

Hi,

i just switched to ath5k because madwifi got removed and i'm now facing massive packet losses. One can't really use the internet anymore. I haven't done any configuration, ath5k is not in MODULES and nothing is blacklisted.

Previously i had ath5k blacklisted and happily used ath_pci.

So, i don't know how to proceed. Should i file a bug report? Or did i just forgot to config something? dmesg looks clean. I really would like to have madwifi back...

Regards

Kilzool

Member

From: Ireland

Registered: 2010-08-04

Posts: 232

Re: packet losses with Atheros AR2413 and ath5k

Hi,

i just switched to ath5k because madwifi got removed and i'm now facing massive packet losses. One can't really use the internet anymore. I haven't done any configuration, ath5k is not in MODULES and nothing is blacklisted.

Previously i had ath5k blacklisted and happily used ath_pci.

So, i don't know how to proceed. Should i file a bug report? Or did i just forgot to config something? dmesg looks clean. I really would like to have madwifi back...

Regards

I also was using ath_pci, and had both ath9k and ath5k blacklisted.
I had to un-blacklist them, and removed ath_pci off the modules.

It seems to be using ath5k now.  I haven't noticed any packet loss though (but next time I get the laptop out - I'll do some double checking).

Last edited by Kilzool (2011-06-11 22:24:57)

Yggdrasil

Member

Registered: 2009-07-21

Posts: 37

Re: packet losses with Atheros AR2413 and ath5k

I searched a bit around and found this bug:
https://bugzilla.kernel.org/show_bug.cgi?id=30342

The ping behaviour isn't exactly the same (normal ping drops nearly all, theirs only few) but the solution in the linked launchpad bug works for me. Adding option nohwcrypt to ath5k solved it.
https://bugs.launchpad.net/ubuntu/+sour … bug/568090

Mustard

Member

From: Noblesville, Indiana

Registered: 2010-03-02

Posts: 39

Website

Re: packet losses with Atheros AR2413 and ath5k

I just hit this bug today myself with a Toshiba Satellite laptop and Atheros 2413 chip.  It would ping fine, but would not load a web page.

rmmod ath5k

modprobe ath5k nohwcrypt

Then restarting the network worked for me.

To automate this at boot time you can add this line to a file in /etc/modprobe.d/

options ath5k nohwcrypt

The file you add it to can be your /etc/modprobe.d/modprobe.conf file if you like.  That is the choice I made.

Last edited by Mustard (2011-09-10 15:34:13)