it is strange that the headphone jack state is unknown
do your shuttle chasssis front audio panel support jack detection ?
Node 0x1b [Pin Complex] wcaps 0x40018f: 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 0x0000373e: IN OUT HP Detect Trigger
Vref caps: HIZ 50 GRD 80 100
Pin Default 0x02214020: [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
Connection: 5
0x0c 0x0d 0x0e 0x0f 0x26*
active profile: <output:analog-stereo>
sinks:
alsa_output.pci-0000_00_1b.0.analog-stereo/#6: Audio interne
Stéréo analogique
sources:
alsa_output.pci-0000_00_1b.0.analog-stereo.monitor/#7: Monitor
of Audio interne Stéréo analogique
ports:
analog-output: Sortie analogique (priority 9900, available:
unknown)
properties:
analog-output-headphones: Casques analogiques (priority 9000,
available: unknown)
properties:
analog-input: Entrée analogique (priority 10000, available:
unknown)
properties:
analog-input-microphone: Microphone (priority 8700, available:
no)
properties:
analog-input-linein: Entrée-ligne (priority 8100, available: no)
properties:
iec958-stereo-output: Digital Output (S/PDIF) (priority 0,
available: unknown)
properties:
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https://bugs.launchpad.net/bugs/1056416
Title:
[ Realtek ALC888, HDA INTEL] Buzzing sound on Speakers and Underruns
crackling sound on headphone
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