Date: Wed, 18 Aug 2010 10:26:42 +0200 From: Ian FREISLICH <ianf@clue.co.za> To: Rui Paulo <rpaulo@FreeBSD.org> Cc: current@freebsd.org Subject: Re: AR9280 "bb hang" and other Message-ID: <E1Oldys-0000Wx-RN@clue.co.za> In-Reply-To: <0D4EA23D-605F-4F15-B07E-6019055EA6F5@FreeBSD.org> References: <0D4EA23D-605F-4F15-B07E-6019055EA6F5@FreeBSD.org> <E1OlHMU-0000Vo-Lf@clue.co.za>
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Rui Paulo wrote:
> On 17 Aug 2010, at 09:17, Ian FREISLICH wrote:
> > Aug 17 09:29:08 mini kernel: ath0: bb hang detected (0x80), resetting
> > Aug 17 09:37:57 mini kernel: ath0: bb hang detected (0x80), resetting
> > Aug 17 09:49:10 mini kernel: ath0: bb hang detected (0x80), resetting
> > Aug 17 10:06:17 mini kernel: ath0: bb hang detected (0x80), resetting
>
> BB hangs are a problem with the 9280 but I don't know how to fix.
> Hardware errors shouldn't happen, but this might mean you have
> very aggressive power reduction settings (ACPI C3, etc.) that are
> interfering with the atheros card. This has happened to me in the
> past.
Now, I've made 2 changes so I'm not sure which affected it:
1. I replaced the card with an AR9285
ath0@pci0:1:0:0: class=0x028000 card=0x7167144f chip=0x002b168c rev=0x01 hdr=0x00
vendor = 'Atheros Communications Inc.'
device = 'Atheros AR9285 Wireless LAN 802.11 a/b/g/n Controller (AR928x)'
class = network
2. I changed the channel on our AP. (there were 2 other nearby APs
on the same channel).
I noticed that I got a lot more bb hangs at the office compared to
home - there are a lot more APs nearby:
[mini] /usr/home/ianf $ ifconfig wlan0 scan
SSID/MESH ID BSSID CHAN RATE S:N INT CAPS
Ignition 00:26:bb:78:b4:91 6 54M -89:-96 100 EPS RSN HTCAP WPA WME
Eco Impact 00:22:3f:55:80:bc 11 54M -92:-96 100 EP HTCAP WPS WPA WME
Viic 00:14:6c:49:3f:1c 11 54M -92:-96 100 EPS WPA ATH WME
cluelan 00:30:4f:58:bf:96 7 54M -72:-96 100 EPS WPA ATH WME
PRIVATE LABEL 00:19:70:05:28:c4 3 54M -79:-96 100 EP WPA WME
blinkbroom1 00:18:4d:1c:8e:3a 5 54M -89:-96 100 EPS WPA
Sasman 00:26:f2:46:2c:de 1 54M -93:-96 100 EP WME
cocoa 00:26:f2:3d:aa:13 3 54M -94:-96 200 EPS WME HTCAP ATH
CareCross 30:46:9a:1e:b0:ca 8 54M -35:-96 100 EPS RSN WPA
We're "cluelan" and we were on channel 3. Previously, I was seeing
a hang every 10 minutes or so, since changing the channel to a
"free" one, I haven't had a hang in the last 40 minutes. The only
bb hang I've had was when I deactivated the RF switch on netbook
and that was a semi-expected result.
Ian
--
Ian Freislich
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