я уже понял, виноват.
ser@mint-HP-Notebook ~ $ aplay -L
default
Playback/recording through the PulseAudio sound server
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
hdmi:CARD=Generic,DEV=0
HD-Audio Generic, HDMI 0
HDMI Audio Output
dmix:CARD=Generic,DEV=3
HD-Audio Generic, HDMI 0
Direct sample mixing device
dsnoop:CARD=Generic,DEV=3
HD-Audio Generic, HDMI 0
Direct sample snooping device
hw:CARD=Generic,DEV=3
HD-Audio Generic, HDMI 0
Direct hardware device without any conversions
plughw:CARD=Generic,DEV=3
HD-Audio Generic, HDMI 0
Hardware device with all software conversions
sysdefault:CARD=Generic_1
HD-Audio Generic, ALC3227 Analog
Default Audio Device
front:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
Front speakers
surround40:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
dmix:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
Direct sample mixing device
dsnoop:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
Direct sample snooping device
hw:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
Direct hardware device without any conversions
plughw:CARD=Generic_1,DEV=0
HD-Audio Generic, ALC3227 Analog
Hardware device with all software conversions
похоже, вот это работает по дефолту. Может, еще задать вопрос матунте? У нее вообще вопросов со звуком не было