>> >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Activating path analog-input-mic >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Path analog-input-mic (Microphone), direction=2, priority=87, probed=yes, supported=yes, has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0, max_volume=48, min_dB=-12, max_dB=12 >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Element Mic, direction=2, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=4, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Element PCM Capture Source, direction=2, switch=0, volume=0, volume_limit=-1, enumeration=1, required=0, required_any=0, required_absent=0, mask=0x0, n_channels=0, override_map=no >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Option Mic (analog-input-microphone/analog-input-microphone) index=0, priority=0 >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Element Line, direction=2, switch=2, volume=2, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2, override_map=no >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Jack Mic, alsa_name='Mic Jack', detection unavailable >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Jack Mic Phantom, alsa_name='Mic Phantom Jack', detection unavailable >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: Setting analog-input-microphone (analog-input-microphone) priority=0 >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: element_set_switch(): e->alsa_name Line >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: element_set_switch(): e->direction == PA_ALSA_DIRECTION_OUTPUT 33694896 >> >> Do you mean the direction is not input ? > > According to debug message, it is so, however in config: Both are cvolume and cswitch Simple mixer control 'Line',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Front Left - Front Right Limits: Capture 0 - 48 Front Left: Capture 24 [50%] [0.00dB] [on] Front Right: Capture 24 [50%] [0.00dB] [on] Simple mixer control 'Mic',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Front Left - Front Right Limits: Capture 0 - 48 Front Left: Capture 24 [50%] [0.00dB] [on] Front Right: Capture 24 [50%] [0.00dB] [on] Seem mono capture switch but capture volume are stereo >>> >>> [Mapping analog-stereo-input] >>> device-strings = hw:%f,1,0 >>> paths-input = analog-input-mic analog-input-linein >>> channel-map = left,right >>> direction = input > > There is explicit mentioning of required direction. > >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: element_set_switch(): b 0 >> >> pulseaudio seem just turn off line switch instead of turn on nic capture volum/switch when activating mic path >> >> One line show element name , values or enum index and enum name instead of three lines tatic int element_set_switch(pa_alsa_element *e, snd_mixer_t *m, bool b) { snd_mixer_elem_t *me; snd_mixer_selem_id_t *sid; int r; pa_assert(m); pa_assert(e); SELEM_INIT(sid, e->alsa_name); if (!(me = snd_mixer_find_selem(m, sid))) { pa_log_warn("Element %s seems to have disappeared.", e->alsa_name); return -1; } if (e->direction == PA_ALSA_DIRECTION_OUTPUT) r = snd_mixer_selem_set_playback_switch_all(me, b); else r = snd_mixer_selem_set_capture_switch_all(me, b); if (r < 0) pa_log_warn("Failed to set switch of %s: %s", e->alsa_name, pa_alsa_strerror(errno)); + else + pa_log_dbg("element_set_switch %s dir=%d index=%d ", e->alsa_name, e->direction, b); return r; } > > Sorry, I'm not sure I understand what do you mean by this. > I'm not C/C++ developer at all, can't even find definition of snd_mixer_elem_t to find what is that and how to use it (my guess that you've being asking about it, right?). >> >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: element_set_option(): e->alsa_name PCM Capture Source >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: element_set_option(): e->switch_use == PA_ALSA_SWITCH_SELECT 0 >> ( 0.090| 0.000) D: [lt-pulseaudio] alsa-mixer.c: element_set_option(): alsa_idx 0 >> >> snd_mixer_selem_get_enum_item_name() provide the name of enum item by index > The pcm capture source seem changed to mic which is index 0 There are some difference between Capture Source of ac97 codec and PCM Capture Source of snd-usb-audio The source of Ac97 capture source are cswitch-exclusive , only one cswitch can be on and others are off Simple mixer control 'Line',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-exclusive penum Capture exclusive group: 0 Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Front Left: Playback 0 [0%] [-34.50dB] [off] Capture [off] Front Right: Playback 0 [0%] [-34.50dB] [off] Capture [off] Simple mixer control 'Mic',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined cswitch cswitch-exclusive penum Capture exclusive group: 0 Playback channels: Mono Capture channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Playback 0 [0%] [-34.50dB] [off] Front Left: Capture [on] Front Right: Capture [on] static int element_set_volume(pa_alsa_element *e, snd_mixer_t *m, const pa_channel_map *cm, pa_cvolume *v, bool deferred_volume, bool write_to_hw) { ... } else { - if ((r = snd_mixer_selem_set_capture_dB(me, c, value, rounding)) >= 0) + if ((r = snd_mixer_selem_set_capture_dB(me, c, value, rounding)) >= 0) { + pa_log_debug("element_set_volume %s %d dB", e->alsa_name, value); r = snd_mixer_selem_get_capture_dB(me, c, &value); + } }