From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Harvey Subject: Re: sbxfi - What works/doesn't summary Date: Tue, 28 Oct 2008 19:33:19 +0000 Message-ID: <490768FF.3020807@jasonline.co.uk> References: <4906FA8C.4030501@jasonline.co.uk> <490709EF.7090803@gmail.com> <49074E98.7070506@jasonline.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from homer.jasonline.co.uk (78-86-168-217.zone2.bethere.co.uk [78.86.168.217]) by alsa0.perex.cz (Postfix) with ESMTP id 90AD92450C for ; Tue, 28 Oct 2008 20:33:14 +0100 (CET) In-Reply-To: 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: alsa-devel@alsa-project.org Cc: Takashi Iwai , The Source List-Id: alsa-devel@alsa-project.org Takashi Iwai wrote: > At Tue, 28 Oct 2008 17:40:40 +0000, > Jason Harvey wrote: > >> The Source wrote: >> >>> You can't hear desktop sounds because they always use pulseaudio no >>> matter what sound system you select as default. For me pulseaudio >>> plays first sound fine after start, others are corrupt along with >>> sound from all other apps. I'll post hw_params later. Also pulseaudio >>> tends to crash often with this driver so I suppose your problem is the >>> same. >>> >> Can confirm that once pulse (on FC9 at least) gets involved it sounds >> terrible. >> >> I worked out that I had removed a package pulseaudio-esound-compat at >> some point in the past and never realised that it contains the symlinks >> that gets Gnome to start the pulse server. >> Once that was fixed the desktop effects started working but only out of >> my USB headset... and nothing I can find in the gui lets me do anything >> about it. >> > > In many cases, the pulse problem comes from the in accurate DMA position > calculation. PA is often too aggressively updating buffers. > Thanks, I knew there was a reason I stripped pulse out of this machine when I installed FC9. Is that a bug in pulse or is it something that will improve with the sbxfi driver? >> mplayer and firefox/flash sound terrible, very tinny and scratchy. >> This is with the base_rate=48000 option set in modprobe.conf >> > > Do you mean a regression with 48kHz in comparison with 96kHz? > > Sorry that was a bit ambiguous, I'd never tried 96kHz. Have just changed base_rate to 96kHz and it performs identically to 48kHz. Pulse mangles the sound in just the same manner at 48kHz or 96kHz. While I was poking about in my alsa configuration I noticed that there is no /etc/alsa/cards/SBXFi.conf I think pulse looks for it, get errors shown after running pulseaudio -vv ALSA lib confmisc.c:1286:(snd_func_refer) Unable to find definition 'cards.SBXFi.pcm.surround51.0:CARD=0' Would that make any difference to anything? (Sorry if pulse issues are totally off-topic) Regards, Jason