Tick Noise in Ubuntu

[kdonlee]

Hello, I am new to linux and oss. I installed oss version 4 instead of alsa in my Ubuntu 10.10 (32bit). I listen music with mpd or ossplay. When I play music using one of the two players, there occur randomly tick noises at 10 to 20 minute intervals. I am using halide bridge (ddc) which is connected from usb of my PC (e3400, 4gb ram, gigabyte mainboard). I tried to adjust buffer in osscore file (set to 128(kbyte)) but it does not affect the noises (a little lessened but not sure).

Is there any way to eliminate the tick noise? It bugs me. Thank you in advance.

[cesium]

Can you paste the output of 'ossmix -a' and of 'ossinfo -v3'?

[kdonlee]

Here is outcome of ossmix:

kdl@musicpc:~$ ossmix -a
Selected mixer 0/High Definition Audio 0x10ec0887
Known controls are:
jack.green.mode <mix2|input> (currently mix2)
jack.green.mute ON|OFF (currently OFF)
jack.green.pcm1 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
jack.green.pcm1-mute ON|OFF (currently OFF)
jack.green.mix1-mute ON|OFF (currently OFF)
jack.pink.mode <mix2|mix3|mix4|mix5|mix8|input> (currently mix2)
jack.pink [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.pink.mute ON|OFF (currently OFF)
jack.fp-pink.mode <mix2|mix3|mix4|mix5|mix8|input> (currently mix2)
jack.fp-pink [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.fp-pink.mute ON|OFF (currently OFF)
jack.blue.mode <mix2|mix3|mix4|mix5|mix8|input> (currently input)
jack.blue [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.blue.mute ON|OFF (currently OFF)
jack.fp-green.mode <mix2|mix3|mix4|mix5|mix8|input> (currently mix2)
jack.fp-green [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.fp-green.mute ON|OFF (currently OFF)
record.mix7.mute.mic ON|OFF (currently OFF)
record.mix7.mute.fp-mic ON|OFF (currently OFF)
record.mix7.mute.linein ON|OFF (currently OFF)
record.mix7.mute.fp-headphone ON|OFF (currently OFF)
record.mix7.mute.mix2 ON|OFF (currently OFF)
record.mix7.mute.mix1 ON|OFF (currently OFF)
record.mix7 [<leftvol>:<rightvol>] (currently 37.9:37.9 dB)
record.mix6.mute.mic ON|OFF (currently OFF)
record.mix6.mute.fp-mic ON|OFF (currently OFF)
record.mix6.mute.linein ON|OFF (currently OFF)
record.mix6.mute.fp-headphone ON|OFF (currently OFF)
record.mix6.mute.mix2 ON|OFF (currently OFF)
record.mix6.mute.mix1 ON|OFF (currently OFF)
record.mix6 [<leftvol>:<rightvol>] (currently 37.9:37.9 dB)
misc.pcm2 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.pcm3 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.pcm4 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.mic [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.fp-mic [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.linein [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.fp-headphone [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.mix2 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.mix1 <mic|fp-mic|linein> (currently mic)
misc.pcm2-mute ON|OFF (currently OFF)
misc.mix1-mute1 ON|OFF (currently OFF)
misc.mix3 <pcm2|mix1> (currently pcm2)
misc.pcm3-mute ON|OFF (currently OFF)
misc.mix1-mute2 ON|OFF (currently OFF)
misc.mix4 <pcm3|mix1> (currently pcm3)
misc.pcm4-mute ON|OFF (currently OFF)
misc.mix1-mute3 ON|OFF (currently OFF)
misc.mix5 <pcm4|mix1> (currently pcm4)
misc.pcm5 [<leftvol>:<rightvol>] (currently 51.9:51.9 dB)
misc.pcm5-mute ON|OFF (currently OFF)
misc.mix1-mute4 ON|OFF (currently OFF)
misc.mix8 <pcm5|mix1> (currently pcm5)

Selected mixer 1/USB sound device
Known controls are:
kdl@musicpc:~$

[kdonlee]

ossinfo -v3:

kdl@musicpc:~$ ossinfo -v3
Version info: OSS 4.2 (b 2004/201101051152) (0x00040100) TRIAL
Platform: Linux/i686 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09 UTC 2011 (musicpc)

Number of audio devices: 10
Number of audio engines: 10
Number of MIDI devices: 0
Number of mixer devices: 2


Device objects
0: osscore0 OSS core services
1: oss_hdaudio0 Intel HD Audio interrupts=565 (565)
HD Audio controller Intel HD Audio
Vendor ID 0x808627d8
Subvendor ID 0x1458a002
Codec 2: Unknown (0x10ec0887/0x1458a002)
2: oss_usb0 USB audio core services
3: usb21b43002-0 USB sound device
4: usb21b43002-1 USB sound device

MIDI devices (/dev/midi*)

Mixer devices
0: High Definition Audio 0x10ec088 (Mixer 0 of device object 1)
Device file /dev/oss/oss_hdaudio0/mix0, Legacy device /dev/mixer0
Priority: 10
Caps:
Device handle: PCIa0021458-0000:00:1b.0-mx01
Device priority: 10

1: USB sound device (Mixer 0 of device object 3)
Device file /dev/oss/usb21b43002-0/mix0, Legacy device /dev/mixer1
Priority: 0
Caps:
Device handle: USB-usb21b43002-0-mx01
Device priority: 0


Audio devices
HD Audio play pcm1 /dev/oss/oss_hdaudio0/pcm0 (device index 0)
Legacy device /dev/dsp0
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 0/HD Audio play pcm1
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au01
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 8
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio play pcm2 /dev/oss/oss_hdaudio0/pcm1 (device index 1)
Legacy device /dev/dsp1
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 1/HD Audio play pcm2
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au02
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio play pcm3 /dev/oss/oss_hdaudio0/pcm2 (device index 2)
Legacy device /dev/dsp2
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 2/HD Audio play pcm3
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au03
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm3 (device index 3)
Legacy device /dev/dsp3
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 3/HD Audio play pcm4
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au04
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio play pcm5 /dev/oss/oss_hdaudio0/pcm4 (device index 4)
Legacy device /dev/dsp4
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 4/HD Audio play pcm5
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au05
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio play spdifout1 /dev/oss/oss_hdaudio0/spdout0 (device index 5)
Legacy device /dev/dsp5
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 5/HD Audio play spdifout1
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au06
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 32000 - 192000 (32000,44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio rec mix7 /dev/oss/oss_hdaudio0/pcmin0 (device index 6)
Legacy device /dev/dsp6
Caps: TRIGGER MMAP
Modes: INPUT
In engine 1: 6/HD Audio rec mix7
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au07
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio rec mix6 /dev/oss/oss_hdaudio0/pcmin1 (device index 7)
Legacy device /dev/dsp7
Caps: TRIGGER MMAP
Modes: INPUT
In engine 1: 7/HD Audio rec mix6
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au08
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

HD Audio rec spdifin2 /dev/oss/oss_hdaudio0/spdin0 (device index
Legacy device /dev/dsp8
Caps: TRIGGER MMAP
Modes: INPUT
In engine 1: 8/HD Audio rec spdifin2
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCIa0021458-0000:00:1b.0-au09
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated

USB sound device play /dev/oss/usb21b43002-1/pcm0 (device index 9)
Legacy device /dev/dsp9
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 9/USB sound device play
Busy (OUT) by PID 1206 / mpd label 'mpd'
Input formats (0x00001000):
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001000):
AFMT_S32_LE - 32 bit signed little endian
Device handle: USB-usb21b43002-1-au01
Related mixer dev: 1
Sample rate source: 9
Preferred channel configuration: STEREO
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 96000 (44100,48000,88200,96000)
HW Type: Not indicated.
Minimum latency: Not indicated


Nodes
/dev/dsp -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0
/dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0
kdl@musicpc:~$

[kdonlee]

It's like popping noise. It becomes louder if the volume is up.....