you can use hdajackretask to set Misc bit (MISC=NO_PRESENCE)
bit 8 of pin default of your headphone and mic at ext front
so that driver don't use jack detection on these two pin complex
or
change pulseaudio conf
http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths
to ignore the state of these two jacks
you can use hdajackretask to set Misc bit (MISC=NO_PRESENCE)
bit 8 of pin default of your headphone and mic at ext front
so that driver don't use jack detection on these two pin complex
or
change pulseaudio conf
http:// cgit.freedeskto p.org/pulseaudi o/pulseaudio/ tree/src/ modules/ alsa/mixer/ paths
to ignore the state of these two jacks