<div dir="ltr">Thanks for reply. System Information is: OS: Ubuntu 8.10 Kernel: 2.6.27-7-generic #1 SMP libasound2: 1.0.17a (1.0.17a-0ubuntu4) libasound2-plugins: 1.0.17 (1.0.17-0ubuntu4) pulseaudio: 0.9.10 (0.9.10-2ubuntu8) installed pulseaudio packages: > $ dpkg --get-selections | grep pulseaudio > gstreamer0.10-pulseaudio            install > pulseaudio                    install > pulseaudio-esound-compat            install > pulseaudio-module-gconf                install > pulseaudio-module-hal                install > pulseaudio-module-x11                install > pulseaudio-module-zeroconf            install > pulseaudio-utils                install pulseaudio setting from PerfectSetup > $ cat .pulse/<a href="http://default.pa">default.pa</a> > load-module module-esound-protocol-tcp auth-ip-acl=<a href="http://127.0.0.1">127.0.0.1</a>;<a href="http://192.168.0.0/16">192.168.0.0/16</a> > load-module module-native-protocol-tcp auth-ip-acl=<a href="http://127.0.0.1">127.0.0.1</a>;<a href="http://192.168.0.0/16">192.168.0.0/16</a> > load-module module-zeroconf-publish > > load-module module-alsa-sink device=hw:0 > load-module module-alsa-source device=hw:0 alsa setting from PerfectSetup > $ cat ~/.asoundrc > pcm.pulse { >     type pulse > } > > ctl.pulse { >     type pulse > } > > pcm.!default { >     type pulse > } > > ctl.!default { >     type pulse > } Error Msg of arecord program: > $  arecord -d 10 -f cd -t wav foobar.wav > Recording WAVE 'foobar.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo > arecord: pcm_read:1473: read error: Input/output error > $ arecord(aplay.c) program dies at pcm_read() which is in aplay.c: > pcm_read() >    -> readi_func() >        -> snd_pcm_readi() and snd_pcm_readi() function returns -EIO(-5) In aplay.c: > /* >  *  read function >  */ > > static ssize_t pcm_read(u_char *data, size_t rcount) > { >     ... >     while (count > 0) { >         r = readi_func(handle, data, count); >         fprintf(stderr, "pcm->setup: %d\n", handle->setup); >         if (r == -EAGAIN || (r >= 0 && (size_t)r < count)) { >             snd_pcm_wait(handle, 1000); >         } else if (r == -EPIPE) { >             xrun(); >         } else if (r == -ESTRPIPE) { >             suspend(); >         } else if (r < 0) { >             error(_("read error: %s"), snd_strerror(r)); >             exit(EXIT_FAILURE); >         } >         if (r > 0) { >     ... In snd_pcm_readi() function (src/pcm/pcm.c of alsa-lib), it seems CHECK_SANITY(! pcm->setup) condition makes IO error In src/pcm/pcm.c: > snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size) > { >     assert(pcm); >     assert(size == 0 || buffer); >     if (CHECK_SANITY(! pcm->setup)) { >         SNDMSG("PCM not set up"); >         return -EIO; >     } >     if (pcm->access != SND_PCM_ACCESS_RW_INTERLEAVED) { >         SNDMSG("invalid access type %s", snd_pcm_access_name(pcm->access)); >         return -EINVAL; >     } >     return _snd_pcm_readi(pcm, buffer, size); > } And there was only one place where sets pcm->setup is _snd_pcm_hw_params() in src/pcm/pcm_params.c. Thanks for any advice, -- Best Regards, Keedi Kim <div class="gmail_quote">2008/10/17 Luke Yelavich <<a href="mailto:themuso@ubuntu.com">themuso@ubuntu.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d">On Fri, Oct 17, 2008 at 02:10:22PM EST, Keedi Kim wrote: > Hi. > > I followed PerfectSetup of pulseaudio wiki, >  then aplay works well, but arecord doesn't. > ALSA's arecord terminates with > "pcm_read:1473: read error: Input/output error" message. > > Does anybody has idea? </div>Could you please tell us what version of alsa-lib/libasound2, alsa-plugins/libasound2-plugins and pulseaudio you are running? Having a better idea what software versions you have will better help us work out the problem. Luke -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkj4BVEACgkQjVefwtBjIM4g1QCg3UjPGhHeYbjvMWXF0OR9rgXS rvQAoO30vGWi9gsrR83YJ11R71IPVl+t =ucms -----END PGP SIGNATURE----- _______________________________________________ pulseaudio-discuss mailing list <a href="mailto:pulseaudio-discuss@mail.0pointer.de">pulseaudio-discuss@mail.0pointer.de</a> <a href="https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss" target="_blank">https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss</a> </blockquote></div> </div>