[pulseaudio-tickets] [Bug 84585] Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84585

--- Comment #84 from Raymond <superquad.vortex2 at gmail.com> ---
 1.132|   0.000) D: [pulseaudio] alsa-util.c: Hardware PCM card 0
'snd_rpi_hifiberry_amp' device 0 subdevice 0
(   1.132|   0.000) D: [pulseaudio] alsa-util.c: Its setup is:
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   stream       : PLAYBACK
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   access       :
RW_INTERLEAVED
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   format       : S16_LE
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   subformat    : STD
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   channels     : 2
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   rate         : 44100
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   exact rate   : 44100
(44100/1)
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   msbits       : 16
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   buffer_size  : 4408
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   period_size  : 1102
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   period_time  : 24988
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   tstamp_mode  : ENABLE
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   period_step  : 1
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   avail_min    : 1102
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   period_event : 1
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   start_threshold  : -1
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   stop_threshold   :
1155530752
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   silence_threshold: 0
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   silence_size : 0
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   boundary     : 1155530752
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   appl_ptr     : 0
(   1.132|   0.000) D: [pulseaudio] alsa-util.c:   hw_ptr       : 0
(   1.137|   0.005) D: [pulseaudio] alsa-sink.c: Read hardware volume: 0:  67%
1:  67%
(   1.138|   0.000) D: [alsa-sink] alsa-sink.c: Thread starting up
(   1.138|   0.000) D: [alsa-sink] core-util.c: SCHED_RR|SCHED_RESET_ON_FORK
worked.
(   1.138|   0.000) I: [alsa-sink] core-util.c: Successfully enabled SCHED_RR
scheduling for thread, with priority 5.
(   1.139|   0.000) I: [alsa-sink] alsa-sink.c: Starting playback.
(   1.139|   0.000) I: [alsa-sink] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_START
failed (-77)


you got another error when you change some values of hw_param


you have to ask the author/maintainer of the sound card driver

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