From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Rigg Subject: Re: multi pcm and mmap problem Date: Sun, 2 Dec 2007 13:40:11 +0000 Message-ID: <20071202134011.GA2956@localhost> References: <200711210158.42108.terminator356@users.sourceforge.net> <200711261746.59712.terminator356@users.sourceforge.net> <200712011833.36219.terminator356@users.sourceforge.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail3.uklinux.net (mail3.uklinux.net [80.84.72.33]) by alsa0.perex.cz (Postfix) with ESMTP id D3495103896 for ; Sun, 2 Dec 2007 14:33:54 +0100 (CET) Content-Disposition: inline In-Reply-To: <200712011833.36219.terminator356@users.sourceforge.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Tim Cc: Takashi Iwai , alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org On Sat, Dec 01, 2007 at 06:33:35PM -0500, Tim wrote: > Takashi, after a week of testing your multi-plughw patch > I'm satisfied it works fine. > > One odd thing is that when I start Jack, sometimes I > immediately get a series of ever increasing xruns, > sometimes hundreds of them with each display update of QJackctl. > Simply restarting QJackctl cures it and it runs for many hours > without trouble. > I am not convinced it has anything to do with your patch, > maybe just my new .asoundrc and new altered setup. It's a known problem with pcm_multi and qjackctl. qjackctl reports xruns that aren't actually happening when using pcm_multi. Some other apps like jamin do this too. Don't worry about it unless you hear dropouts (in which case the alsa driver will report a real xrun). John