Date: Sat, 9 Apr 2016 11:06:28 +0200 From: Svatopluk Kraus <onwahe@gmail.com> To: Sylvain Garrigues <sylvain@sylvaingarrigues.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: Distorted sound on Raspberry Pi 2 Message-ID: <CAFHCsPVnLFdC0uOgLfie8QQibi_1b9v9b4mWzz%2B7URuExGSaPA@mail.gmail.com> In-Reply-To: <FA4A06C6-0A9A-4697-8C2D-141E1416F252@sylvaingarrigues.com>
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Is it recent problem? If yes, some info about kernel version would be really nice. On Fri, Apr 8, 2016 at 5:28 PM, Sylvain Garrigues <sylvain@sylvaingarrigues.com> wrote: > Hello, > > I have continuous warnings on my Raspberry PI 2 regarding sound when hw.snd.verbose=4: > > ... > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=120000, old=120000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=124000, old=124000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=0, old=0 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=4000, old=4000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=8000, old=8000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=12000, old=12000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=16000, old=16000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=16000, old=16000 delta=0 amt=0 ready=8192 free=119808 > pcm0: WARNING: PCMDIR_PLAY DMA completion too fast/slow ! hwptr=20000, old=20000 delta=0 amt=0 ready=8192 free=119808 > … > > The sound is frequently slightly distorted (like every 5s), and I am trying to figure out why. > > To reproduce: > # sysctl dev.pcm.0.dest=1 > # sysctl hw.snd.verbose=4 > # mpg123 anympegfile > > I still get the warnings on the HDMI output (dev.pcm.0.dest=2) but the sound is not distorted. > > Any idea? > > Best, > Sylvain. > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"home | help
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