From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751855AbZFKRbC (ORCPT ); Thu, 11 Jun 2009 13:31:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753362AbZFKRay (ORCPT ); Thu, 11 Jun 2009 13:30:54 -0400 Received: from mail-ew0-f210.google.com ([209.85.219.210]:40617 "EHLO mail-ew0-f210.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753073AbZFKRax (ORCPT ); Thu, 11 Jun 2009 13:30:53 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:cc:references:in-reply-to :mime-version:content-disposition:message-id:content-type :content-transfer-encoding; b=CbTgH7h5cfRK8eoVpCg+A7uJUuRAmC3doLfR+Tmehkh/oDOGs+mVSVpgG9xtmCqG9u aHVExTnMoHxH9SVBHW3G6X40i7pgqxbT2PB0iMHf16B/lcM/dKoX+k/+TOZZm9ZOhy9S VCW52gleqyHi9e6qEWkK+Zs+pdynSoEIBfJXY= From: Bartlomiej Zolnierkiewicz To: Takashi Iwai Subject: Re: sound skipping regression introduced in 2.6.30-rc8 Date: Thu, 11 Jun 2009 19:36:19 +0200 User-Agent: KMail/1.11.3 (Linux/2.6.30-next-20090611-07944-gc1b019d-dirty; KDE/4.2.3; i686; ; ) Cc: David Miller , linux-kernel@vger.kernel.org References: <20090610.112804.193703669.davem@davemloft.net> <200906111740.01043.bzolnier@gmail.com> In-Reply-To: MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200906111936.20178.bzolnier@gmail.com> Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 11 June 2009 18:07:40 Takashi Iwai wrote: > At Thu, 11 Jun 2009 17:40:00 +0200, > Bartlomiej Zolnierkiewicz wrote: > > > > On Thursday 11 June 2009 16:23:04 Takashi Iwai wrote: > > > At Thu, 11 Jun 2009 16:14:07 +0200, > > > Bartlomiej Zolnierkiewicz wrote: > > > > > > > > On Thursday 11 June 2009 15:56:14 Takashi Iwai wrote: > > > > > At Thu, 11 Jun 2009 15:32:33 +0200, > > > > > Bartlomiej Zolnierkiewicz wrote: > > > > > > > > > > > > On Thursday 11 June 2009 14:02:20 David Miller wrote: > > > > > > > From: Takashi Iwai > > > > > > > Date: Wed, 10 Jun 2009 21:37:14 +0200 > > > > > > > > > > > > > > > Also, it'd be helpful if you can check whether the problem exists in > > > > > > > > the current sound git tree (for-linus branch), too. > > > > > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git for-linus > > > > > > > > > > > > > > Same behavior as 2.6.30, but debugging messages are formatted differently > > > > > > > :-) > > > > > > > > > > > > > > [ 1109.062182] PCM: Lost interrupts? (stream=0, delta=16384, intr_ptr=73728) > > > > > > > [ 1125.126123] PCM: Lost interrupts? (stream=0, delta=16384, intr_ptr=861184) > > > > > > > [ 1131.398094] PCM: Lost interrupts? (stream=0, delta=16384, intr_ptr=1178624) > > > > > > > [ 1135.579406] PCM: Lost interrupts? (stream=0, delta=16384, intr_ptr=1395712) > > > > > > > [ 1145.115367] PCM: Lost interrupts? (stream=0, delta=16384, intr_ptr=1869824) > > > > > > > [ 1152.688670] PCM: Lost interrupts? (stream=0, delta=16384, intr_ptr=2249728) > > > > > > > > > > > > [ Just another data point. ] > > > > > > > > > > > > I'm experiencing similar problem with the sound in recent -next kernels. > > > > > > > > > > Which driver? > > > > > > > > snd_intel8x0 > > > > > > > > > > Though the only debug data that I'm getting with xrun_debug == 1 is: > > > > > > > > > > > > XRUN: pcmC0D0p:0 > > > > > > XRUN: pcmC0D0p:0 > > > > > > XRUN: pcmC0D0p:0 > > > > > > XRUN: pcmC0D0p:0 > > > > > > XRUN: pcmC0D0p:0 > > > > > > > > > > > > with xrun_debug == 3: > > > > > > XRUN: pcmC0D0p:0 > > > > > > Pid: 4718, comm: audacious Not tainted 2.6.30-next-20090611-07944-gc1b019d-dirty #21 > > > > > > Call Trace: > > > > > > > > > > The semantics of xrun_debug proc file was a bit changed. Now it's > > > > > bit flags, and 4 corresponds to the additional jiffies check (1 is to > > > > > show the debug message, 2 to show stack trace). > > > > > > > > > > Try to set 5 to xrun_debug. Do you get other messages? > > > > > > > > With xrun_debug == 5 I get: > > > > > > > > PCM: hw_ptr skipping! (pos=14336, delta=15893, period=1024, jdelta=3/90) > > > > PCM: hw_ptr skipping! (pos=11264, delta=15893, period=1024, jdelta=3/90) > > > > PCM: hw_ptr skipping! (pos=7168, delta=15888, period=1024, jdelta=3/90) > > > > PCM: hw_ptr skipping! (pos=8192, delta=15915, period=1024, jdelta=3/90) > > > > PCM: hw_ptr skipping! (pos=15360, delta=15888, period=1024, jdelta=3/90) > > > > XRUN: pcmC0D0p:0 > > > > PCM: hw_ptr skipping! (pos=6144, delta=15890, period=1024, jdelta=3/90) > > > > PCM: hw_ptr skipping! (pos=3072, delta=15890, period=1024, jdelta=3/90) > > > > > > > > [ They seem to be the same as reported by davem against 2.6.30. ] > > > > > > Yes. > > > > > > > and the skipping is gone. > > > > > > Does the patch below fix the problem? > > > > Unfortunately, it did not fix the issue. > > > > > If not, how about to revert the commit below? > > > > > > commit da2436a23c038055b1da6fe30b6ea2886b1e07b0 > > > Author: Jaroslav Kysela > > > Date: Mon Apr 13 21:31:25 2009 +0200 > > > [ALSA] intel8x0: do not use zero value from PICB register > > > > Same here. > > Hmm... How about the patch below, then? Still not fixed. > This should show other debug prints from intel8x0 if my guess is right. There is a lot of them.. :) XXX intel8x0: invalid update 4060 (jdelta=3) XXX intel8x0: invalid update 4040 (jdelta=3) XXX intel8x0: invalid update 4024 (jdelta=3) XXX intel8x0: invalid update 3992 (jdelta=2) XXX intel8x0: invalid update 3956 (jdelta=3) XXX intel8x0: invalid update 4044 (jdelta=2) XXX intel8x0: invalid update 4028 (jdelta=3) XXX intel8x0: invalid update 4020 (jdelta=3) XXX intel8x0: invalid update 3984 (jdelta=3) XXX intel8x0: invalid update 4052 (jdelta=2) ...