linux-kernel - Re: [alsa-devel] [PATCH]Support MCP89 and GT21x hdmi audio

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Date:	Thu, 11 Mar 2010 11:24:06 -0800
From:	VDR User <user.vdr@...il.com>
To:	Jaroslav Kysela <perex@...ex.cz>
Cc:	Wu Fengguang <fengguang.wu@...el.com>, Wei Ni <wni@...dia.com>,
	Takashi Iwai <tiwai@...e.de>,
	alsa-devel <alsa-devel@...a-project.org>,
	Jaroslav Kysela <jkysela@...hat.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	akpm <akpm@...ux-foundation.org>,
	Pavel Hofman <pavel.hofman@...ite.cz>
Subject: Re: [alsa-devel] [PATCH]Support MCP89 and GT21x hdmi audio

On Thu, Mar 11, 2010 at 10:32 AM, Jaroslav Kysela <perex@...ex.cz> wrote:
>>>> [pid 22651] ioctl(21, 0x80044121, 0xb439d2cc) = -1 EPIPE (Broken pipe)
>>>> pcm_hw.c: snd_pcm_hw_delay() SNDRV_PCM_IOCTL_DELAY failed.
>>>
>>> -EPIPE means underrun condition.
>>>
>>> Try 'echo 101 > /proc/asound/card0/pcm0p/xrun_debug' and send dmesg
>>> output
>>> to check if the ring buffer pointer in the hda-intel driver does not
>>> return
>>> wrong values. Replace card0 and pcm0p with right identifiers (look to
>>> 'aplay
>>> -l' for right numbers).
>>>
>>> More info: http://www.alsa-project.org/main/index.php/XRUN_Debug
>>
>> Hi, thanks for your further reply.  However, I don't see
>> "CONFIG_SND_PCM_XRUN_DEBUG" anywhere in the kernel config (both in
>> menuconfig or .config).
>
> All these parameters should be set: CONFIG_SND_PCM_XRUN_DEBUG,
> CONFIG_SND_VERBOSE_PROCFS, CONFIG_SND_DEBUG . I updated wiki.

Ok, I have now compiled the alsa snapshot with the following:

./configure --with-cards=hda-intel
--with-card-options=hda-hwdep,hda-reconfig,hda-codec-realtek,hda-codec-nvhdmi,hda-generic,pcm-xrun-debug
--with-debug=verbose --enable-verbose-procfs --with-isapnp=no
--with-sequencer=no --with-oss=no --with-pcm-oss-plugins=no

Attached are samples of my dmesg and /var/log/syslog files.  Hopefully
there is some useful information there?

Best regards,
Derek

Download attachment "dmesg" of type "application/octet-stream" (39850 bytes)

Download attachment "syslog" of type "application/octet-stream" (5619 bytes)