Label says PiFi DAC+. v2.0 I'll need to look up how to apply the patch. I'm not familiar with how to do it. On Mar 29, 2015 8:41 AM, "Raymond Yau" <superquad.vortex2 at gmail.com> wrote: > > > > I'll check HiFiBerry's site and see if I can get it. > > > > https://www.hifiberry.com/dacplus/ > > What is the label on the black DAC chip ? > > Aplay/Arecord output > !!-------------------- > > APLAY > > **** List of PLAYBACK Hardware Devices **** > card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry > DAC HiFi pcm512x-hifi-0 [] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > > ARECORD > > **** List of CAPTURE Hardware Devices **** > > Seem half duplex > > Simple mixer control 'PCM',0 > Capabilities: volume penum > Playback channels: Front Left - Front Right > Capture channels: Front Left - Front Right > Limits: 0 - 215 > Front Left: 172 [80%] > Front Right: 172 [80%] > Simple mixer control 'DSP Program',0 > Capabilities: enum > Items: 'FIR interpolation with de-emphasis' 'Low latency IIR with > de-emphasis' 'High attenuation with de-emphasis' 'Fixed process flow' > 'Ringing-less low latency FIR' > Item0: 'FIR interpolation with de-emphasis' > Simple mixer control 'Playback',0 > Capabilities: volume penum > Playback channels: Front Left - Front Right > Capture channels: Front Left - Front Right > Limits: 0 - 1 > Front Left: 0 [0%] [-6.00dB] > Front Right: 0 [0%] [-6.00dB] > Simple mixer control 'Playback Boost',0 > Capabilities: volume penum > Playback channels: Front Left - Front Right > Capture channels: Front Left - Front Right > Limits: 0 - 1 > Front Left: 0 [0%] [0.00dB] > Front Right: 0 [0%] [0.00dB] > Simple mixer control 'Auto Mute',0 > Capabilities: pswitch penum > Playback channels: Front Left - Front Right > Mono: > Front Left: Playback [on] > Front Right: Playback [on] > Simple mixer control 'Auto Mute Mono',0 > Capabilities: pswitch pswitch-joined penum > Playback channels: Mono > Mono: Playback [on] > Simple mixer control 'Auto Mute Time Left',0 > Capabilities: enum > Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s' > Item0: '21ms' > Simple mixer control 'Auto Mute Time Right',0 > Capabilities: enum > Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s' > Item0: '21ms' > Simple mixer control 'Clock Missing Period',0 > Capabilities: enum > Items: '1s' '2s' '3s' '4s' '5s' '6s' '7s' '8s' > Item0: '1s' > Simple mixer control 'Deemphasis',0 > Capabilities: pswitch pswitch-joined penum > Playback channels: Mono > Mono: Playback [on] > Simple mixer control 'Digital',0 > Capabilities: pswitch penum > Playback channels: Front Left - Front Right > Mono: > Front Left: Playback [on] > Front Right: Playback [on] > Simple mixer control 'Volume Ramp Down Emergency Rate',0 > Capabilities: enum > Items: '1 sample/update' '2 samples/update' '4 samples/update' > 'Immediate' > Item0: '1 sample/update' > Simple mixer control 'Volume Ramp Down Emergency Step',0 > Capabilities: enum > Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step' > Item0: '4dB/step' > Simple mixer control 'Volume Ramp Down Rate',0 > Capabilities: enum > Items: '1 sample/update' '2 samples/update' '4 samples/update' > 'Immediate' > Item0: '1 sample/update' > Simple mixer control 'Volume Ramp Down Step',0 > Capabilities: enum > Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step' > Item0: '1dB/step' > Simple mixer control 'Volume Ramp Up Rate',0 > Capabilities: enum > Items: '1 sample/update' '2 samples/update' '4 samples/update' > 'Immediate' > Item0: '1 sample/update' > Simple mixer control 'Volume Ramp Up Step',0 > Capabilities: enum > Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step' > Item0: '1dB/step' > > > https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/soc/codecs/pcm512x.c > > Seem not your dacplus > > >> diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c > >> index bb79e71..e36c2a7 100644 > >> --- a/src/modules/alsa/alsa-util.c > >> +++ b/src/modules/alsa/alsa-util.c > >> @@ -481,7 +481,7 @@ int pa_alsa_set_sw_params(snd_pcm_t *pcm, > snd_pcm_uframes_t avail_min, bool peri > >> return err; > >> } > >> > >> - if ((err = snd_pcm_sw_params_set_start_threshold(pcm, swparams, > (snd_pcm_uframes_t) -1)) < 0) { > >> + if ((err = snd_pcm_sw_params_set_start_threshold(pcm, swparams, > boundary)) < 0) { > >> pa_log_warn("Unable to set start threshold: %s\n", > pa_alsa_strerror(err)); > >> return err; > >> } > >> > > Do this patch fix your problem ? > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150329/64058e49/attachment.html>
