Ath9k Atheros wireless card problem

Hello everyone!
A friend of mine just bought an awesome laptop, and wanted me to help him setup a new Archlinux installation.
Everything went smooth, except for the wireless network card.
From the Device Manager of Windows Vista of the laptop, i saw it is an Atheros card, with the AR9820 chipset, which is supposed to work just fine with the latest ath9k driver (or the madwifi one).
The respective lspci -vvv output is:
14:00.0 Network controller: Atheros Communications Inc. Device 002a (rev 01)
Subsystem: Askey Computer Corp. Device 7136
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 19
Region 0: Memory at f2100000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: ath9k
Kernel modules: ath9k
It is bizzare that the module of the card is not recognized (in the first line, it does not indicate anything apart from the Atheros thing, no AR9820 sign)..
The rc.conf of interest part:
MOD_AUTOLOAD="yes"
MODULES=(... ath_hal ath9k ...)
wlan0="dhcp"
wlan_wlan0="wlan0 essid BlaBla_essid key BlaBla_key"
INTERFACES=(eth0 wlan0)
gateway="default gw 192.168.1.1"
ROUTES=(gateway)
With this setup, he can connect to the router, acquire a valid IP address (192.168.1.2), but he can ping to nowhere.
He keeps getting a host unreachable error.
Any ideas what has gone wrong?
Thnx!
Last edited by avoulk (2008-10-22 19:49:37)

Just something that MAY be related...
excerpt from Kernel Changelog for 2.6.27.3:
commit f76f2408cccf448917c8a2a2b775571fd60aee30
Author: Johannes Berg <[email protected]>
Date: Thu Oct 16 19:05:12 2008 +0000
ath9k/mac80211: disallow fragmentation in ath9k, report to userspace
commit 4233df6b748193d45f79fb7448991a473061a65d upstream
[b]As I've reported, ath9k currently fails utterly when fragmentation
is enabled.[/b] This makes ath9k "support" hardware fragmentation by
not supporting fragmentation at all to avoid the double-free issue.
The patch also changes mac80211 to report errors from the driver
operation to userspace.
That hack in ath9k should be removed once the rate control algorithm
it has is fixed, and we can at that time consider removing the hw
fragmentation support entirely since it's not used by any driver.
Signed-off-by: Johannes Berg <[email protected]>
Acked-by: Luis R. Rodriguez <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Since you're using the same card....thought i'd let you know
Last edited by TjPhysicist (2008-10-23 01:55:03)

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Just something that MAY be related...
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