El jue, 17 ene 2013 a las 16:32 horas Takashi Iwai escribió:
At Thu, 17 Jan 2013 09:59:20 -0500, Miro Hodak wrote:
On Thu, Jan 17, 2013 at 7:49 AM, Raymond Yau superquad.vortex2@gmail.comwrote:
OK, now as far as Auto-Mute goes, should it do what expected when
enabled - i.e. muting the speakers when headphones are connected to the front panel? I have tried that, does not seem to work.
Do your computer chassis have a hda front audio panel with Jack detection ?
The front headphone Jack should return true when headphone Jack is plugged
control.35 { iface CARD name 'Front Headphone Jack'
value false comment { access read type BOOLEAN count 1 } }
All ADI codecs support impedance measurement
Try the modified hda-jack-sense-test which need hda-analyzer
http://thread.gmane.org/gmane.linux.alsa.devel/90911/focus=91115
Hmmm, ran into some python issues. Even hda-analyzer itself is not working: ... File "/dev/shm/hda-analyzer/hda_proc.py", line 143, in wrongfile raise ValueError, "wrong proc file format (%s)" % msg ValueError: wrong proc file format (integer decode 'State of AFG node 0x01:' ('Node '))
Ah, it's a new proc file entry that has been added recently. hda-analyzer needs to be fixed.
In anyway, only for checking the presence unsolicited events, you can do without extra program. Suppose you built your kernel with the tracing support. See "Tracepoints" option in Documentation/sound/alsa/HD-Audio.txt.
# echo 1 > /sys/kernel/debug/tracing/events/hda/hda_unsol_event/enable
(plug and unplug your headphone jacks)
# cat /sys/kernel/debug/tracing/trace
If you see some hda_unsol_event lines there, it implies that the jack detection basically works in hardware level.
Takashi
I Suppose that when auto-mute is enabled an HP independent is disabled, inserting the HP jack should disable sound from front speakers. If so then auto-mute doesn't work. Jack insertion/extraction events are well detected for front speakers and HP.
#~ cat /sys/kernel/debug/tracing/trace # tracer: nop # # entries-in-buffer/entries-written: 4/4 #P:2 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | <idle>-0 [001] d.h. 137.881919: hda_unsol_event: [0] res=8000000, res_ex=10 <idle>-0 [001] d.h. 162.511102: hda_unsol_event: [0] res=8000000, res_ex=10 <idle>-0 [001] d.h. 246.529813: hda_unsol_event: [0] res=4000000, res_ex=10 <idle>-0 [001] d.h. 272.381719: hda_unsol_event: [0] res=4000000, res_ex=10
branch tested: test/hda-gen-parser
commit 6f4c53a1467c51966e06a1d29c6f0fee85d5c6f6 Merge: 920544e 29476558 Author: Takashi Iwai tiwai@suse.de Date: Thu Jan 17 09:56:33 2013 +0100
Regards,