seem jack detection problem of your headphone
http://mailman.alsa-project.org/pipermail/alsa-
devel/2013-May/062362.html
follow Takashi Iwai procedure to trace the verbs while plugging the
headphone
try hdajackretask to disable jack detection of headphone
and set Misc = NO_PRESENCE (bit 8 of pin default) of headphone node
(change pin default to 0x02214520) to disable jack detection
ode 0x1b [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out
Control: name="Headphone Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Front Headphone Jack", index=0, device=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
Amp-In vals: [0x00 0x00]
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Pincap 0x0001373c: IN OUT HP EAPD Detect
Vref caps: HIZ 50 GRD 80 100
EAPD 0x2: EAPD
Pin Default 0x02214420: [Jack] HP Out at Ext Front
Conn = 1/8, Color = Green
DefAssociation = 0x2, Sequence = 0x0
Pin-ctls: 0xc0: OUT HP VREF_HIZ
Unsolicited: tag=01, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 5
0x0c 0x0d 0x0e 0x0f 0x26*
( 0.671| 0.000) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone
Jack' is now plugged in
( 0.671| 0.000) D: [pulseaudio] device-port.c: Setting port
analog-output-headphones to status yes
( 0.671| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding
port analog-output-headphones
( 0.671| 0.000) D: [alsa-sink-ALC898 Analog] alsa-sink.c: Cutting sleep
time for the initial iterations by half.
( 0.671| 0.000) D: [alsa-sink-ALC898 Analog] alsa-mixer.c: Activating path
analog-output-headphones
0.680| 0.005) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone
Jack' is now unplugged
( 0.680| 0.000) D: [pulseaudio] device-port.c: Setting port
analog-output-headphones to status no
( 0.680| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding
port analog-output-headphones
( 0.680| 0.000) D: [alsa-sink-ALC898 Analog] alsa-mixer.c: Activating path
analog-output
( 0.680| 0.000) D: [alsa-sink-ALC898 Analog] alsa-mixer.c: Path
analog-output (Analog Out
( 0.776| 0.092) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone
Jack' is now plugged in
( 0.776| 0.000) D: [pulseaudio] device-port.c: Setting port
analog-output-headphones to status yes
( 0.776| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding
port analog-output-headphones
( 0.776| 0.000) D: [alsa-sink-ALC898 Analog] alsa-mixer.c: Activating path
analog-output-headphones
( 0.797| 0.017) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone
Jack' is now unplugged
( 0.797| 0.000) D: [pulseaudio] device-port.c: Setting port
analog-output-headphones to status no
( 0.797| 0.000) D: [pulseaudio] module-switch-on-port-available.c: finding
port analog-output-headphones
( 0.797| 0.000) D: [alsa-sink-ALC898 Analog] alsa-mixer.c: Activating path
analog-output
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https://bugs.launchpad.net/bugs/1248116
Title:
PulseAudio switch rapidly port making the sound horrible
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