[LAU] Pulseaudio Foibles

Clemens Ladisch clemens at ladisch.de
Tue Nov 10 03:56:32 EST 2009


David Baron wrote:
> Nov  9 15:33:46 d_baron pulseaudio[13214]: alsa-sink.c: Disabling timer-based 
> scheduling because high-resolution timers are not available from the kernel.
> Nov  9 15:33:47 d_baron pulseaudio[13214]: alsa-source.c: Disabling timer-
> based scheduling because high-resolution timers are not available from the 
> kernel.
> 
> This from .config:
> CONFIG_HIGH_RES_TIMERS=y
> CONFIG_HPET_TIMER=y
> 
> So the 1st two errors are ??

Probably the kernel didn't find the hardware for that.  Does your
mainboard have it?  ("dmesg | grep -i hpet")

> Nov  9 15:33:50 d_baron pulseaudio[13214]: module.c: Failed to load  module 
> "module-alsa-card" (argument: "device_id="2" name="platform-snd_mpu401.0" 
> card_name="alsa_card.platform-snd_mpu401.0" tsched=yes ignore_dB=no 
> card_properties="module-udev-detect.discovered=1""): initialization failed.
> 
> I have no idea what the mpu401 error is about--that is driving a Yamaha sw60xg 
> sound generator.

For some reason, PulseAudio thinks that your MIDI interface is the card
that should be used for PCM audio input/output.  Try configuring it to
use another card, or no card, or try disabling it in KDE.


HTH
Clemens



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