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I.e., make sure Headphone Playback Switch and Headphone Playback Volume are unmuted. So completely cold boot your laptop with the headphones already plugged in if you haven't done so before, and try directly after boot before doing anything else. There are cases when the external amplifiers don't come up after hibernation etc. One possible complication is that the headphone has an external amplifier ("EAPD"), and that is sometimes controlled by the BIOS or SMM firmware.Įdit: Ok, next step is to make sure the external amplifiers don't interfere. If unmuting the Headphone Playback Switch control doesn't work, please add the output of amixer -c0 contents to the pastebin. To verify that the detection work, run evtest as root, pick the one that looks most similar to "HDA Intel PCH Headphone", and remove/plug in the headphone. It also says that it can detect plug events, and currently it's plugged in. Unmute it in alsamixer (press right arrow until you see it, select it, press m), and you should hear something, or at least get an additional port in pavucontrol that you can select to hear something. That says you have an ALSA control "Headphone Playback Switch", which is currently muted. Pin Default 0x04211020: HP Out at Ext Right Here's the pin node of your headphone: Node 0x21 wcaps 0x40058d: Stereo Amp-OutĬontrol: name="Headphone Playback Switch", index=0, device=0Īmp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1