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Date: Mon, 12 May 2008 00:56:45 +0400
From: Stas Sergeev <stsp@aknet.ru>
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To: Roberto Oppedisano <roberto.oppedisano@infracom.it>
CC: LKML <linux-kernel@vger.kernel.org>, Takashi Iwai <tiwai@suse.de>
Subject: Re: 2.6.26-rc1 regression: e5e1d3cb20034a3cbcfff1f0bae12201aa2ce17e
 breaks artsd
References: <482737BE.20502@infracom.it> <4827415A.7060101@aknet.ru> <482756F0.8020609@infracom.it>
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Hello.

Roberto Oppedisano wrote:
>> cat /proc/asound/cards
>>   
>  0 [pcsp           ]: PC-Speaker - pcsp
>                       Internal PC-Speaker at port 0x61
>  1 [I82801DBICH4   ]: ICH4 - Intel 82801DB-ICH4
>                       Intel 82801DB-ICH4 with AD1981B at irq 10
>  2 [Modem          ]: ICH-MODEM - Intel 82801DB-ICH4 Modem
>                       Intel 82801DB-ICH4 Modem at irq 10
>> I guess you simply got the pc-speaker driver
>> loaded first and became your primary sound
>> driver, which is not what you want.
> yes, that's true. Anyway in this case the sound server crashes with a
> signal 6.
I can't say for sure why does the
crash happen, but what is known is
that you need a very recent alsa-lib
to get pc-speaker working properly.
And  even 1.0.16 is not modern enough
for that. :(
But that's not a big deal.
The attached config is only what's
needed. Put it into /usr/share/alsa/cards
and /etc/alsa/cards and maybe that
will help. There should be already
the file with that name - overwrite it.

> Passing -D dsp1 to artsd avoids the crash,
The easiest solution is
---
options snd-pcsp index=2
---
into /etc/modprobe.conf. It will
then not go ahead of 2 other drivers
of yours.

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#
# Configuration for PC-Speaker driver
#

<confdir:pcm/front.conf>

PC-Speaker.pcm.front.0 {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type softvol
	slave.pcm {
		type hw
		card $CARD
	}
	control {
		name "Master Playback Volume"
		card $CARD
	}
	min_dB -10.0
	max_dB 20.0
}	

# default with dmix & null
PC-Speaker.pcm.default {
	@args [ CARD ]
	@args.CARD {
		type string
	}
	type asym
	playback.pcm {
		type softvol
		control {
			name "Master Playback Volume"
			card $CARD
		}
		min_dB -10.0
		max_dB 20.0
		slave.pcm {
			type plug
			slave.pcm {
				@func concat
				strings [ "dmix:" $CARD ]
			}
		}
	}
	capture.pcm {
		type null
	}
}


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