I'm attempting to jump into the thread from here: http://markmail.org/message/zqbhcuc2gnxji3s7
I'm experiencing the same issue as described in the thread. I'm currently running kernel 3.9.6, but have had the issue for some time. I attempted to go through the debugging requested by Takashi Iwai on Jan 13. Immediately after issuing the "hda-verb /dev/snd/hwC0D0 0x1f SET_POWER_STATE 0" command, here is the trace output: # tracer: nop # # entries-in-buffer/entries-written: 8/8 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | hda-verb-14066 [001] .... 90509.001737: hda_power_count: [0:0] power_count=2, power_on=1, power_transition=0 hda-verb-14066 [001] .... 90509.001740: hda_send_cmd: [0:0] val=1f70500 hda-verb-14066 [001] .... 90509.001814: hda_get_response: [0:0] val=0 hda-verb-14066 [001] .... 90509.001814: hda_power_count: [0:0] power_count=1, power_on=1, power_transition=0 hda-verb-14122 [003] .... 90712.799801: hda_power_count: [0:0] power_count=2, power_on=1, power_transition=0 hda-verb-14122 [003] .... 90712.799804: hda_send_cmd: [0:0] val=1f70500 hda-verb-14122 [003] .... 90712.799880: hda_get_response: [0:0] val=0 hda-verb-14122 [003] .... 90712.799881: hda_power_count: [0:0] power_count=1, power_on=1, power_transition=0 When the speakers stop, here is the output: # tracer: nop # # entries-in-buffer/entries- written: 8/8 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | hda-verb-14066 [001] .... 90509.001737: hda_power_count: [0:0] power_count=2, power_on=1, power_transition=0 hda-verb-14066 [001] .... 90509.001740: hda_send_cmd: [0:0] val=1f70500 hda-verb-14066 [001] .... 90509.001814: hda_get_response: [0:0] val=0 hda-verb-14066 [001] .... 90509.001814: hda_power_count: [0:0] power_count=1, power_on=1, power_transition=0 hda-verb-14122 [003] .... 90712.799801: hda_power_count: [0:0] power_count=2, power_on=1, power_transition=0 hda-verb-14122 [003] .... 90712.799804: hda_send_cmd: [0:0] val=1f70500 hda-verb-14122 [003] .... 90712.799880: hda_get_response: [0:0] val=0 hda-verb-14122 [003] .... 90712.799881: hda_power_count: [0:0] power_count=1, power_on=1, power_transition=0 I'm a bit out of my element here, if I've missed a crucial step, please let me know. Thanks! -Jason -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/