Takashi Iwai wrote: > At Tue, 17 Mar 2009 21:56:06 -0700, > dfoley wrote: >> I'm currently having a problem with playing wave files >> >> root@tsi-tpcxx:~# aplay /usr/share/sounds/alsa/Front_Center.wav >> Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono >> mapped channel 10 to 2 >> underrun!!! (at least 130.662 ms long) >> underrun!!! (at least 140.809 ms long) >> >> I've narrowed it down to the commit ed3da3d9a0ef13c6fe1414ec73c9c1be12747b62 in linux-next/sound-2.6-tiwai.git. >> ALSA: Rewrite hw_ptr updaters >> >> The audio works fine, when I reverse this commit. > > Could you build with CONFIG_SND_DEBUG_XRUN and set below? > echo 1 > /proc/asound/card0/pcm0p/xrun_debug > > It will show you why the playback skips. It means usually the pointer > callback is unstable. The commit changed the xrun check more > strictly. > > > Takashi root@tsi-tpcxx:~# echo 1 > /proc/asound/card0/pcm0p/xrun_debug root@tsi-tpcxx:~# aplay /usr/share/sounds/alsa/Front_Center.wav Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono mapped channel 10 to 2 hda_codec: Lost interrupts? (stream=0, delta=20004, intr_ptr=2048) XRUN: pcmC0D0p underrun!!! (at least 58.490 ms long) hda_codec: Lost interrupts? (stream=0, delta=20003, intr_ptr=2048) XRUN: pcmC0D0p underrun!!! (at least 58.254 ms long) hda_codec: Lost interrupts? (stream=0, delta=20004, intr_ptr=2048) _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
