alsa-project/alsa-lib issue #205 was edited from WolsYang:

**I had try the way in this issue, but not work for me : (**

**helem (MIXER,'Master Playback Volume',0,1,0) appears twice or more cannot load mixer controls: Invalid argument**#47

**In default I only can play sound with Back port**

**Here is my computer audio port look like.** |codec | ALC888-VD | ALC888-VD | |:-------------|:----------------:|:----------------:| |position | Back | Front | |Function | 0:Line Out, 1:MIC | 0:Line Out, 1:MIC| |Port Num | 2 | 2 | |HW:dev|0:0|0:2| |/sys/class/cound|hwC0D0|hwC0D1|

**OS:Ubuntu 20.04.2LTS** **$ uname -r** ``` 5.13.0-051300-generic ```

**$ amixer** ``` ALSA lib simple_none.c:1544:(simple_add1) helem (MIXER,'Front Mic Boots Valume',0,1,0) appears twice or more amixer: Mixer default load error: Invalid aggument ```

**$ aplay -l** ``` **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC888-VD Analog [ALC888-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 2: ALC888-VD Analog [ALC888-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 ``` **$ amixer -c 0 controls** ``` numid=18,iface=CARD,name='Front Line Out Front Phantom Jack' numid=16,iface=CARD,name='Front Mic Jack' numid=76,iface=CARD,name='Front Mic Jack',index=1 numid=41,iface=CARD,name='HDMI/DP,pcm=3 Jack' numid=47,iface=CARD,name='HDMI/DP,pcm=7 Jack' numid=53,iface=CARD,name='HDMI/DP,pcm=8 Jack' numid=78,iface=CARD,name='Headphone Front Jack' numid=79,iface=CARD,name='Headphone Surround Jack' numid=19,iface=CARD,name='Line Out Surround Phantom Jack' numid=17,iface=CARD,name='Rear Mic Jack' numid=77,iface=CARD,name='Rear Mic Jack',index=1 numid=15,iface=MIXER,name='Master Playback Switch' numid=14,iface=MIXER,name='Master Playback Volume' numid=64,iface=MIXER,name='Headphone Playback Switch' numid=66,iface=MIXER,name='Headphone Playback Switch',index=1 numid=63,iface=MIXER,name='Headphone Playback Volume' numid=65,iface=MIXER,name='Headphone Playback Volume',index=1 numid=62,iface=MIXER,name='PCM Playback Volume' numid=12,iface=MIXER,name='Front Mic Boost Volume' numid=7,iface=MIXER,name='Front Mic Playback Switch' numid=6,iface=MIXER,name='Front Mic Playback Volume' numid=74,iface=MIXER,name='Front Mic Boost Volume',device=1 numid=69,iface=MIXER,name='Front Mic Playback Switch',device=1 numid=68,iface=MIXER,name='Front Mic Playback Volume',device=1 numid=2,iface=MIXER,name='Front Playback Switch' numid=1,iface=MIXER,name='Front Playback Volume' numid=4,iface=MIXER,name='Surround Playback Switch' numid=3,iface=MIXER,name='Surround Playback Volume' numid=11,iface=MIXER,name='Capture Switch' numid=73,iface=MIXER,name='Capture Switch',device=1 numid=10,iface=MIXER,name='Capture Volume' numid=72,iface=MIXER,name='Capture Volume',device=1 numid=5,iface=MIXER,name='Loopback Mixing' numid=67,iface=MIXER,name='Loopback Mixing',device=1 numid=42,iface=MIXER,name='IEC958 Playback Con Mask' numid=48,iface=MIXER,name='IEC958 Playback Con Mask',index=1 numid=54,iface=MIXER,name='IEC958 Playback Con Mask',index=2 numid=43,iface=MIXER,name='IEC958 Playback Pro Mask' numid=49,iface=MIXER,name='IEC958 Playback Pro Mask',index=1 numid=55,iface=MIXER,name='IEC958 Playback Pro Mask',index=2 numid=44,iface=MIXER,name='IEC958 Playback Default' numid=50,iface=MIXER,name='IEC958 Playback Default',index=1 numid=56,iface=MIXER,name='IEC958 Playback Default',index=2 numid=45,iface=MIXER,name='IEC958 Playback Switch' numid=51,iface=MIXER,name='IEC958 Playback Switch',index=1 numid=57,iface=MIXER,name='IEC958 Playback Switch',index=2 numid=13,iface=MIXER,name='Rear Mic Boost Volume' numid=9,iface=MIXER,name='Rear Mic Playback Switch' numid=8,iface=MIXER,name='Rear Mic Playback Volume' numid=75,iface=MIXER,name='Rear Mic Boost Volume',device=1 numid=71,iface=MIXER,name='Rear Mic Playback Switch',device=1 numid=70,iface=MIXER,name='Rear Mic Playback Volume',device=1 numid=21,iface=PCM,name='Capture Channel Map' numid=20,iface=PCM,name='Playback Channel Map' numid=81,iface=PCM,name='Capture Channel Map',device=2 numid=80,iface=PCM,name='Playback Channel Map',device=2 numid=46,iface=PCM,name='ELD',device=3 numid=59,iface=PCM,name='Playback Channel Map',device=3 numid=52,iface=PCM,name='ELD',device=7 numid=60,iface=PCM,name='Playback Channel Map',device=7 numid=58,iface=PCM,name='ELD',device=8 numid=61,iface=PCM,name='Playback Channel Map',device=8

```

**$ pactl list modules** ``` Card #0 Name: alsa_card.pci-0000_00_1b.0 Driver: module-alsa-card.c Owner Module: 7 Properties: alsa.card = "0" alsa.card_name = "HDA Intel PCH" alsa.long_card_name = "HDA Intel PCH at 0x81410000 irq 132" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:00:1b.0" sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0" device.bus = "pci" device.vendor.id = "8086" device.vendor.name = "Intel Corporation" device.product.id = "2284" device.product.name = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller" device.form_factor = "internal" device.string = "0" device.description = "Built-in Audio" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Profiles: input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 65, available: yes) output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 6500, available: yes) output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6565, available: yes) output:analog-surround-40: Analog Surround 4.0 Output (sinks: 1, sources: 0, priority: 1200, available: yes) output:analog-surround-40+input:analog-stereo: Analog Surround 4.0 Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 1265, available: yes) output:hdmi-stereo: Digital Stereo (HDMI) Output (sinks: 1, sources: 0, priority: 5900, available: yes) output:hdmi-stereo+input:analog-stereo: Digital Stereo (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5965, available: yes) output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: yes) output:hdmi-surround+input:analog-stereo: Digital Surround 5.1 (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 865, available: yes) output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (sinks: 1, sources: 0, priority: 800, available: yes) output:hdmi-surround71+input:analog-stereo: Digital Surround 7.1 (HDMI) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 865, available: yes) output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (sinks: 1, sources: 0, priority: 5700, available: yes) output:hdmi-stereo-extra1+input:analog-stereo: Digital Stereo (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5765, available: yes) output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: yes) output:hdmi-surround-extra1+input:analog-stereo: Digital Surround 5.1 (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: yes) output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (sinks: 1, sources: 0, priority: 600, available: yes) output:hdmi-surround71-extra1+input:analog-stereo: Digital Surround 7.1 (HDMI 2) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 665, available: yes) output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (sinks: 1, sources: 0, priority: 5700, available: yes) output:hdmi-stereo-extra2+input:analog-stereo: Digital Stereo (HDMI 3) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5765, available: yes) off: Off (sinks: 0, sources: 0, priority: 0, available: yes) Active Profile: output:analog-stereo ```

Issue URL : https://github.com/alsa-project/alsa-lib/issues/205 Repository URL: https://github.com/alsa-project/alsa-lib