Re: Quattro woes or: What does "SNDRV_PCM_IOCTL_START failed" mean?

[Takashi Iwai <tiwai@suse.de>]

At Tue, 11 Mar 2003 11:32:09 +0100,
Frank Barknecht wrote:
> 
> Hallo,
> Takashi Iwai hat gesagt: // Takashi Iwai wrote:
> 
> > At Mon, 10 Mar 2003 23:33:22 +0100,
> > Frank Barknecht wrote:
> > > ALSA lib pcm_hw:454(snd_pcm_hw_start) SNDRV_PCM_IOCTL_START failed:
> > > Broken pipe
> > 
> > do you see any kernel message?
> > if the start fails in the pcm trigger callback, usb-audio driver
> > should show some error message there.
> 
> No, there only are the usual (de-)registering messages regarding
> snd-usb-audio. The only difference between my notebook and the laptop
> has been the kernel-version. Just 5 minutes ago I downgraded the
> notebook's kernel to 2.4.18 and now the error message went away! I'm
> currently still getting a lot of clicks, that probrably are caused by
> some wrong period settings in my application, but in general it is
> fine. For example "jackd -d alsa -d hw:0 -n 2" clicks, but "-n 3" is
> smooth.

make sure that you starting the jack with 48kHz and the period size
aligned to 48, such as 48, 96, 192...


Takashi


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