From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: Quattro woes or: What does "SNDRV_PCM_IOCTL_START failed" mean? Date: Tue, 11 Mar 2003 13:55:15 +0100 Sender: alsa-devel-admin@lists.sourceforge.net Message-ID: References: <20030310223321.GA10836@fliwatut.scifi> <20030311103209.GA4139@fliwatut.scifi> Mime-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <20030311103209.GA4139@fliwatut.scifi> Errors-To: alsa-devel-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Frank Barknecht Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org 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 ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf