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* ath9k: AR9462 btcoex doesn't appear to work
@ 2012-08-25 22:04 Sherwin Soltani
  2012-08-26  1:58 ` Sujith Manoharan
  0 siblings, 1 reply; 8+ messages in thread
From: Sherwin Soltani @ 2012-08-25 22:04 UTC (permalink / raw)
  To: linux-wireless@vger.kernel.org

Hello,

I have an Acer Aspire V5-571 which contains the AR9462 chipset (PCI ID 
168c:0034), supported by the ath9k driver. This chipset claims to 
support Bluetooth coexistence. However, after booting up, my kernel does 
not register any Bluetooth devices.

I am using kernel version 3.6.0-999-generic (apw@gomeisa) (gcc version 
4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)). I also tried 3.4 and 3.2 kernels 
without success. Additionally, I can try to do

rmmod ath9k && modprobe ath9k btcoex_enable=1

In the message log, I can see this:

[ 1204.643120] ath9k: ath9k: Driver unloaded
[ 1214.203099] ath: phy1: Disabling ASPM since BTCOEX is enabled
[ 1214.203105] ath: EEPROM regdomain: 0x6a
[ 1214.203106] ath: EEPROM indicates we should expect a direct regpair map
[ 1214.203108] ath: Country alpha2 being used: 00
[ 1214.203109] ath: Regpair used: 0x6a

However 'hcitool dev' shows no devices after this operation.

Looking back through the ath9k-devel list, I can see that there was some 
discussion on this chipset, but it seems that Bluetooth functionality 
wasn't tested with it. Is this a known problem? Is there any information 
I can supply to help fix it?

Aside from the Bluetooth problems, there are also problems with 
frequently dropping signals (even when I am very close to the access 
point), but right now that's a secondary concern to Bluetooth for me.

Thanks,

Sherwin Soltani

^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2012-08-26 17:37 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-08-25 22:04 ath9k: AR9462 btcoex doesn't appear to work Sherwin Soltani
2012-08-26  1:58 ` Sujith Manoharan
2012-08-26  5:18   ` Sherwin Soltani
2012-08-26  6:05     ` Rajkumar Manoharan
2012-08-26  6:09       ` Rajkumar Manoharan
2012-08-26  7:48         ` Sherwin Soltani
2012-08-26 12:38           ` Sujith Manoharan
2012-08-26 17:37             ` Sherwin Soltani

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