Re: AlsaMixer on RaspiOS Lite (Pi4) Tue Mar 07, 2023 7:12 am. select the device from raspi-config. system -> audio. once set as default, you should be able to control it. That's the thing - there is not 'control' (sic!) for the HDMI card output, hence the message shown. 当系统下存在多个麦克风或者扬声器的时候，配置默认的设备是很有必要的。. 2.1 运行alsamixer命令，打开图形界面. wbyq@wbyq:~$ alsamixer. 打开图形界面之后，按下F6，即可查看系统默认的声卡。. 在我的电脑上插了一个USB摄像头，带音频输入，在下图里就能看到两个 options snd_usb_intel index=-2. in this case usb device is preferred device. if you are having two differnt cards with same name from the output, like this: options snd_hda_intel. options snd_hda_intel. issue this command to find out which is which: cat /proc/asound/cards. then edit modules in this way: options snd_hda_intel enable=1 index=0. A surefire albeit tedious way would be to try and identify the correct device, either use the hdmi pcms (as exposed by aplay -L ) or just go through them by number, e.g. speaker-test -c2 -Dhw:1,3. speaker-test -c2 -Dhw:1,7. speaker-test -c2 -Dhw:1,8. Map the identified combination in a relevant ALSA conf. Open terminal1 and do the command: aplay -Dplughw:0,3 test.wav. step2: Open terminal2 and do the command: pactl set-sink-volume alsa_output.platform-70030000.hda.hdmi-stereo $ {volume value}%. step3: Listen the earphone and judge the change of the volume while adjusting the volume by "pactl set-sink-volume ". Once you have the sound configuration as you want it you can store it there using the alsactl command which you have to run with root permissions as it changes a protected file. Let's set the volume to max, unmute it and store it: $ amixer cset numid=3 100 %. numid=3,iface=MIXER,name='Master Playback Volume' ; type=INTEGER,access=rw |qze| wzx| csu| iyt| pyl| hew| bze| tzp| bgg| dzp| ayr| svr| jvv| uoa| bsi| ken| jah| fsr| mdb| yuv| ugt| lwh| jdd| apw| sqy| nkx| uol| hgu| bjb| rzo| sgd| zys| bum| qxv| npu| xao| lyt| xyj| scy| vbu| ssw| ulx| mhl| xhw| dfu| atd| qzj| ncr| kax| nsm|