2012-9-7 下午1:26 於 "David Henningsson" david.henningsson@canonical.com 寫道：
The purpose of this flag is unclear. If the problem is that some machines have broken misc/NO_PRESENCE bits, they should be fixed by pin fixups.
In addition, this causes jack detection functionality to be flawed on the M31EI, where there are two jacks without jack detection (which is properly marked as NO_PRESENCE), but due to ignore_misc_bit, these jacks are instead being reported as being present but always unplugged.
do you mean the commit does not fix the bug?
ALSA: hda - add support for Uniwill ECS M31EI notebook
This hardware requires same fixup for the node 0x0f like Asus A6Rp. More information: https://bugzilla.redhat.com/show_bug.cgi?id=785417
http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=commit;h=416846d...
the real cases are those desktop which does not use hda front audio panel , they just loss the auto mute since there is no jack detect circuit but they can still hear sound from the headphone at anytime
do pulseaudio need a phantom port for the front panel headphone and mic without jack detection ?