dont know

device.mk

@@ -40,6 +40,13 @@ AB_OTA_UPDATER := false
 
 # Audio
 PRODUCT_PACKAGES += \
+    tinyalsa-utils \
+    tinymix \
+    tinyplay
+
+PRODUCT_PACKAGES += \
+    libsoundtrigger \
+    vendor.qti.hardware.pal@1.0-impl \
     android.hardware.audio@7.1-impl.samsung-sm8650 \
     android.hardware.audio.effect@7.0-impl \
     android.hardware.audio.service \

rootdir/etc/ueventd.rc

@@ -323,6 +323,9 @@ subsystem ipc_logging
 /dev/msm_rotator          0660   system     system
 /dev/sdsprpc-smd          0660   system     system
 
+# all ALSA sound devices
+/dev/snd/*    0660   audio   audio
+
 #permissions for audio
 /dev/wcd_dsp0_control     0660   system     audio
 /dev/wcd-dsp-glink        0660   system     audio