>
> In case it may be of interest to anyone with the same or similar issue,
> here is a "behavioral schematic" that seems to accurately reflect the
> relationship between {pavucontrol/pactl/pacmd/amixer} mute and the
hardware
> mute function and LEDs on my T-510, showing the differences across the
> kernel change between 3.18 and 3.19:
>
> http://misc.postpro.net/t510led/schematic_view.jpg
>
> (
You have not posted alsa-info of working 3.18
Refer to alsa-info found in t510 speaker powersave regression
https://lkml.org/lkml/2012/12/22/113
!!-------Mixer controls for card 29 [ThinkPadEC]
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw
6MHT46WW-1.21'
Mixer name : 'ThinkPad EC 6MHT46WW-1.21'
Components : ''
Controls : 1
Simple ctrls : 1
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Do this console playback switch has any effect on your schematic view ?
Soundcards recognised by ALSA
!!-----------------------------
0 [MID ]: HDA-Intel - HDA Intel MID
HDA Intel MID at 0xf2620000 irq 45
29 [ThinkPadEC ]: ThinkPad EC - ThinkPad Console Audio Control
ThinkPad Console Audio Control at EC reg 0x30, fw
6MHT46WW-1.21
AFAIK, pulseaudio ignore card 29 "ThinkPadEC"
http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/mixer/profile-sets/90-pulseaudio.rules?id=078a39af886ea3bb590595b973343af77c2837fe
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