Date: Wed, 18 Aug 2010 10:14:03 +0100 From: Rui Paulo <rpaulo@FreeBSD.org> To: Ian FREISLICH <ianf@clue.co.za> Cc: current@freebsd.org Subject: Re: AR9280 "bb hang" and other Message-ID: <F1A489B7-1B9A-4ED9-ABF4-504E52D4874F@FreeBSD.org> In-Reply-To: <E1Oldys-0000Wx-RN@clue.co.za> References: <0D4EA23D-605F-4F15-B07E-6019055EA6F5@FreeBSD.org> <E1OlHMU-0000Vo-Lf@clue.co.za> <E1Oldys-0000Wx-RN@clue.co.za>
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On 18 Aug 2010, at 09:26, Ian FREISLICH wrote: > 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 >>=20 >> 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. >=20 > Now, I've made 2 changes so I'm not sure which affected it: >=20 > 1. I replaced the card with an AR9285 >=20 > ath0@pci0:1:0:0: class=3D0x028000 card=3D0x7167144f chip=3D0x002b168c = rev=3D0x01 hdr=3D0x00 > vendor =3D 'Atheros Communications Inc.' > device =3D 'Atheros AR9285 Wireless LAN 802.11 a/b/g/n Controller = (AR928x)' > class =3D network >=20 > 2. I changed the channel on our AP. (there were 2 other nearby APs > on the same channel). >=20 > I noticed that I got a lot more bb hangs at the office compared to > home - there are a lot more APs nearby: >=20 > [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 >=20 > 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. Yes, the hangs are dependent on the signal and noise conditions. Regards, -- Rui Paulo
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