Date: Mon, 3 Dec 2007 01:20:53 +0800 From: Ariff Abdullah <ariff@FreeBSD.org> To: Kostik Belousov <kostikbel@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: snd_hda + ath = hard hang Message-ID: <20071203012053.037a73f6.ariff@FreeBSD.org> In-Reply-To: <20071125201915.GC78396@deviant.kiev.zoral.com.ua> References: <20071125201915.GC78396@deviant.kiev.zoral.com.ua>
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On Sun, 25 Nov 2007 22:19:15 +0200
Kostik Belousov <kostikbel@gmail.com> wrote:
> I have a laptop that shares interrupt between ath0 and snd_hda0
> devices. Machine works under the RELENG_6 normally. Now, on the
> RELENG_7 (and CURRENT), attempt to ifconfig ath0 up usualy hangs the
> machine in the next 2-5 minutes.
>
> Hang is hard, I even cannot switch the console to look at the kernel
> messages or enter the ddb. Also, laptop does not have a serial port.
>
> Not setting the ath0 up, or, unloading snd_hda.ko before activating
> the interface, allows machine to work. Wireless works without
> problem, interrupt rate is as expected.
>
> Any advice ?
>
Try enabling msi via hint.pcm.%d.msi="1" . It is disabled by default
due to too many broken msi.
There is a poor man polling mode which can be enabled through sysctl
dev.pcm.%d.polling=1, but I won't recommend this for typical usage
(unless to debug this kind of weird issues).
This regression probably originated from somewhere else since you said
it was working fine under RELENG_6.
> pciconf:
>
> hostb0@pci0:0:0:0: class=0x060000 card=0x00901025 chip=0x27a08086 rev=0x03
> hdr=0x00
> vendor = 'Intel Corporation'
> device = '955XM/945GM/PM/GMS/940GML Express Processor to
> DRAM Controller' class = bridge
> subclass = HOST-PCI
> none0@pci0:0:27:0: class=0x040300 card=0x00901025 chip=0x27d88086 rev=0x02
> hdr=0x00
> vendor = 'Intel Corporation'
> device = '82801G (ICH7 Family) High Definition Audio'
> class = multimedia
> ath0@pci0:6:2:0: class=0x020000 card=0x04181468 chip=0x001a168c rev=0x01
> hdr=0x00
> vendor = 'Atheros Communications Inc.'
> device = 'Atheros AR5005G Atheros AR5005G 802.11abg NIC
> Chipset / TP-Link (TL-WN551G)' class = network
> subclass = ethernet
>
--
Ariff Abdullah
FreeBSD
... Recording in stereo is obviously too advanced
and confusing for us idiot ***** users :P ........
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