how many audio jacks or speaker in this computer ?
pulseaudio most likely skip the headphone path when it cannot find
headphone playback volume or switch
post the pulseaudio log
Node 0x0d [Pin Complex] wcaps 0x400181: Stereo
Control: name="Front Headphone Jack", index=0, device=0
Pincap 0x0000173f: IN OUT HP Detect Trigger ImpSense
Vref caps: HIZ 50 GRD 80
Pin Default 0x0221401f: [Jack] HP Out at Ext Front
Conn = 1/8, Color = Green
DefAssociation = 0x1, Sequence = 0xf
Pin-ctls: 0xc0: OUT HP VREF_HIZ
Unsolicited: tag=01, enabled=1
Connection: 1
0x02
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https://bugs.launchpad.net/bugs/1102835
Title:
[MacBook1,1, SigmaTel STAC9221 A1, Green Headphone Out, Front] No
sound at all
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