Android 12, volume up button clicked (screen on):

2021-09-15 12:45:20.438 529-8141/system_process D/MediaSessionService: dispatchVolumeKeyEvent, pkg=com.google.android.apps.nexuslauncher, opPkg=com.google.android.apps.nexuslauncher, pid=1014, uid=10128, asSystem=true, event=KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_VOLUME_UP, scanCode=115, metaState=0, flags=0x8, repeatCount=0, eventTime=1314214, downTime=1314214, deviceId=0, source=0x301, displayId=-1 }, stream=-2147483648, musicOnly=false
2021-09-15 12:45:20.439 529-8141/system_process D/MediaSessionService: Adjusting suggestedStream=-2147483648 by 1. flags=4113, preferSuggestedStream=false, session=null
2021-09-15 12:45:20.442 529-8141/system_process D/MediaSessionService: dispatchVolumeKeyEvent, pkg=com.google.android.apps.nexuslauncher, opPkg=com.google.android.apps.nexuslauncher, pid=1014, uid=10128, asSystem=true, event=KeyEvent { action=ACTION_UP, keyCode=KEYCODE_VOLUME_UP, scanCode=115, metaState=0, flags=0x8, repeatCount=0, eventTime=1314274, downTime=1314214, deviceId=0, source=0x301, displayId=-1 }, stream=-2147483648, musicOnly=false
2021-09-15 12:45:20.442 529-8141/system_process D/MediaSessionService: Adjusting suggestedStream=-2147483648 by 0. flags=4116, preferSuggestedStream=false, session=null


Android 12, volume up button clicked (screen off):

2021-09-15 12:45:44.923 529-630/system_process D/MediaSessionService: dispatchVolumeKeyEvent, pkg=android, opPkg=android, pid=529, uid=1000, asSystem=false, event=KeyEvent { action=ACTION_DOWN, keyCode=KEYCODE_VOLUME_UP, scanCode=115, metaState=0, flags=0x8, repeatCount=0, eventTime=1338842, downTime=1338842, deviceId=0, source=0x301, displayId=-1 }, stream=-2147483648, musicOnly=true
2021-09-15 12:45:44.924 529-630/system_process D/MediaSessionService: Adjusting suggestedStream=-2147483648 by 1. flags=4096, preferSuggestedStream=false, session=null
2021-09-15 12:45:44.931 529-630/system_process D/MediaSessionService: Nothing is playing on the music stream. Skipping volume event, flags=4096
2021-09-15 12:45:44.972 529-630/system_process D/MediaSessionService: dispatchVolumeKeyEvent, pkg=android, opPkg=android, pid=529, uid=1000, asSystem=false, event=KeyEvent { action=ACTION_UP, keyCode=KEYCODE_VOLUME_UP, scanCode=115, metaState=0, flags=0x8, repeatCount=0, eventTime=1338903, downTime=1338842, deviceId=0, source=0x301, displayId=-1 }, stream=-2147483648, musicOnly=true
2021-09-15 12:45:44.972 529-630/system_process D/MediaSessionService: Adjusting suggestedStream=-2147483648 by 0. flags=4096, preferSuggestedStream=false, session=null
2021-09-15 12:45:44.974 529-630/system_process D/MediaSessionService: Nothing is playing on the music stream. Skipping volume event, flags=4096