Use patcl to adjust the volume for speaker-test

Needed due to the switch to pipewire and pulseaudio.

scripts/wk/hw/audio.py

@@ -23,14 +23,17 @@ def audio_test_linux() -> None:
   LOG.info('Audio Test')
 
   # Set volume
-  for source in ('Master', 'PCM'):
-    cmd = f'amixer -q set "{source}" 80% unmute'.split()
-    run_program(cmd, check=False)
+  commands = (
+    'pactl set-sink-mute @DEFAULT_SINK@ off',
+    'pactl set-sink-volume @DEFAULT_SINK@ 80%',
+    )
+  for cmd in commands:
+    run_program(cmd.split(), check=False)
 
   # Run audio tests
   for mode in ('pink', 'wav'):
-    cmd = f'speaker-test -c 2 -l 1 -t {mode}'.split()
-    run_program(cmd, check=False, pipe=False)
+    cmd = f'speaker-test -c 2 -l 1 -t {mode}'
+    run_program(cmd.split(), check=False, pipe=False)
 
 
 if __name__ == '__main__':