alsa-project/alsa-utils issue #256 was opened from Ovalelephant35: Following are the output of terminal when trying to fetch amixer set:- ```0 amixer: Unable to find simple control 'DC Mode Enable',0 1709919772.617362 WARNING measure-activity: Problem with amixer set "DC Mode Enable" mute amixer: Unable to find simple control 'V_REFOUT Enable',0 1709919772.664983 WARNING measure-activity: Problem with amixer set "V_REFOUT Enable" unmute amixer: Unable to find simple control 'Mic Boost (+20dB)',0 1709919772.766386 WARNING measure-activity: Problem with amixer set "Mic Boost (+20dB)" unmute amixer: Unable to find simple control 'DC Mode Enable',0 1709919772.866294 WARNING measure-activity: amixer: Could not get DC Mode amixer: Unable to find simple control 'V_REFOUT Enable',0 1709919772.916730 WARNING measure-activity: amixer: Could not get mic bias voltage. amixer: Unable to find simple control 'Mic Boost (+20dB)',0 1709919773.016803 WARNING measure-activity: amixer: Could not get mic boost Traceback (most recent call last): File "/usr/bin/sugar-activity3", line 5, in <module> activityinstance.main() File "/usr/lib/python3.7/dist-packages/sugar3/activity/activityinstance.py", line 230, in main instance = create_activity_instance(activity_constructor, activity_handle) O File "/usr/lib/python3.7/dist-packages/sugar3/activity/activityinstance.py", line 59, in create_activity_insta activity = constructor(handle) File "/home/user/Activities/Measure/measure.py", line 187, in self.audiograb ag(self.wave.new buffer, self) init File "/home/user/Activities/Measure/audiograb.py", line 125, in init self.pipeline.add(self.alsasrc) TypeError: Argument 1 does not allow None as a value Exited with status 1, pid 20470 activity id 53d702f16908eb0372466a8f3d74df190d6d00ca ``` Installed alsa-utils when amixer was missing using this command ```sudo apt-get alsa-utils``` Currently on using command ```amixer controls``` this is the output ``` numid=3, iface-MIXER, name='Master Playback Volume' numid=2,iface-MIXER, name='Capture Switch' numid=1, iface-MIXER, name='Capture Volume' ``` Issue URL : https://github.com/alsa-project/alsa-utils/issues/256 Repository URL: https://github.com/alsa-project/alsa-utils
