Date: Thu, 11 May 2006 15:22:38 -0700 From: Dylan Alex Simon <dylan@dylex.net> To: freebsd-multimedia@freebsd.org Subject: Re: snd_ich garbled audio Message-ID: <20060511222238.GA4133@datura.dylex.net> In-Reply-To: <200605101937.45885.doconnor@gsoft.com.au> References: <200605101601.40457.doconnor@gsoft.com.au> <20060510091107.ihklfr948ock04gc@netchild.homeip.net> <200605101937.45885.doconnor@gsoft.com.au>
next in thread | previous in thread | raw e-mail | index | archive | help
> > > It is not totally garbled and doesn't happen all the time but it is
> > > almost like the endianess is wrong, or something similar as it only
> > > affects loud-ish sounds..
> >
> > Please reduce your mixer settings. If the problem vanishes, too high
>
> The mixer settings are quite low usually (pcm & vol/ogain)
I'm having the same kind of problem which started after upgrading from 6.0 to
6.1-RELEASE. This is with an application using ports/libao-0.8.5_2 direct
through /dev/dsp0.0 for output, but a little testing with ossdsp output show
similar issues. It's not significant distortion but there's clearly little
garbled skips. It seems to happen more when the system's under load. If I
play a simple pure tone with no load, the most reproducible issue is a little
skip (like a few hundred blank samples) every 30 seconds.
:-Dylan
pcm0@pci0:31:5: class=0x040100 card=0x80b01043 chip=0x24d58086 rev=0x02 hdr=0x00
vendor = 'Intel Corporation'
device = '82801EB/ER (ICH5/ICH5R) AC'97 Audio Controller'
class = multimedia
subclass = audio
pcm0: <Intel ICH5 (82801EB)> port 0xe800-0xe8ff,0xef00-0xef3f mem 0xfe77bc00-0xfe77bdff,0xfe77b800-0xfe77b8ff irq 17 at device 31.5 on pci0
pcm0: <Analog Devices AD1980 AC97 Codec>
FreeBSD Audio Driver (newpcm)
Installed devices:
pcm0: <Intel ICH5 (82801EB)> at io 0xfe77bc00, 0xfe77b800 irq 17 bufsz 16384 kld snd_ich (1p/1r/0v channels duplex default)
[pcm0:play:0:dsp0.0]: spd 44100, fmt 0x10000010, flags 0x00000000, 0x00000000
interrupts 0, underruns 0, ready 0 [b:8192/4096/2|bs:131072/4096/32]
{userland} -> feeder_root(0x10000010) -> {hardware}
[pcm0:record:0:dsp0.1]: spd 8000, fmt 0x00000008/0x10000010, flags 0x00000000, 0x00000000
interrupts 0, overruns 0, hfree 1024, sfree 131072 [b:1024/512/2|bs:131072/128/1024]
{hardware} -> feeder_root(0x10000010) -> feeder_16leto8(0x10000010 -> 0x10000040) -> feeder_stereotomono8(0x10000040 -> 0x00000040) -> feeder_sign8(0x00000040 -> 0x00000008) -> {userland}
hw.snd.report_soft_formats: 1
hw.snd.targetirqrate: 32
hw.snd.verbose: 2
hw.snd.maxautovchans: 0
hw.snd.unit: 0
hw.snd.pcm0.buffersize: 16384
hw.snd.pcm0.vchans: 0
hw.snd.pcm0.ac97rate: 48000
Mixer vol is currently set to 0:0
Mixer pcm is currently set to 75:75
Mixer line is currently set to 0:0
Mixer mic is currently set to 0:0
Mixer cd is currently set to 0:0
Mixer rec is currently set to 0:0
Mixer igain is currently set to 0:0
Mixer ogain is currently set to 50:50
Mixer line1 is currently set to 0:0
Mixer phin is currently set to 0:0
Mixer phout is currently set to 0:0
Recording source: mic
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060511222238.GA4133>