Hi Miller,
Miller Puckette wrote:
Hi Claude,
This is weird behavior indeed... what audio hardware are you using?
The onboard sound on my laptop:
# lsmod | grep snd snd_virmidi 3200 0 snd_seq_virmidi 5952 1 snd_virmidi snd_rawmidi 20640 1 snd_seq_virmidi snd_seq_midi_event 5824 1 snd_seq_virmidi snd_seq 50512 2 snd_seq_virmidi,snd_seq_midi_event snd_seq_device 7244 2 snd_rawmidi,snd_seq snd_pcm_oss 48032 1 snd_mixer_oss 17216 1 snd_pcm_oss snd_rtctimer 2576 0 snd_intel8x0 29568 2 snd_ac97_codec 83004 1 snd_intel8x0 snd_pcm 82568 3 snd_pcm_oss,snd_intel8x0,snd_ac97_codec snd_timer 21700 3 snd_seq,snd_rtctimer,snd_pcm snd 49220 14 snd_virmidi,snd_seq_virmidi,snd_rawmidi,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_rtctimer,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer snd_page_alloc 7748 2 snd_intel8x0,snd_pcm soundcore 7456 3 snd,usb_midi rtc 10744 1 snd_rtctimer
# lspci -v 0000:00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03) Subsystem: ASUSTeK Computer Inc.: Unknown device 1893 Flags: bus master, medium devsel, latency 0, IRQ 7 I/O ports at ee00 I/O ports at e000 [size=64] Memory at ffaff800 (32-bit, non-prefetchable) [size=512] Memory at ffaff400 (32-bit, non-prefetchable) [size=256] Capabilities: [50] Power Management version 2
I noticed that the modem (which I don't use) and the Cardbus Bridge (which I don't use either) also use IRQ 7, but I don't know what this means.
Claude
I'm running nothing but ALSA these days and haven't had that kind of problem...
On Fri, Aug 26, 2005 at 01:27:45AM +0100, Claude Heiland-Allen wrote:
Hi Miller, and others,
With ALSA audio output I get:
tried but couldn't sync A/D/A ^^^ repeated many times
audio I/O error history: seconds ago error type 3.00 A/D/A sync 3.00 DAC blocked 3.00 A/D/A sync 3.00 DAC blocked 3.00 A/D/A sync 3.00 DAC blocked 3.00 A/D/A sync 6.92 DAC blocked 6.92 A/D/A sync 6.92 DAC blocked 6.92 A/D/A sync 7.09 DAC blocked 7.09 A/D/A sync 7.09 DAC blocked 7.09 A/D/A sync 7.09 DAC blocked 7.09 A/D/A sync 7.09 DAC blocked 7.09 A/D/A sync 7.44 DAC blocked
I set the buffer size to as high as 500ms and still got >100ms audio dropouts every few seconds, which is obviously no good at all.
PortAudio with /dev/dsp works fine with the same settings, no dropouts at all, so I guess that's what I'll use for now. I have yet to try JACK, and OSS didn't work at all (no devices to choose from, which is strange because PortAudio works fine with /dev/dsp)
Claude