← Whispering

fix: Remove JACK API enumeration to prevent memory corruption crash

dbff59b44e050ecbd7f2283dfdd79cfa98325928 · Claude · Jan 26, 2026 00:04

JACK API causes 'malloc(): unsorted double linked list corrupted' when
queried alongside other audio APIs. Removed JACK device listing.

PipeWire exposes JACK devices through ALSA, so they should still be
accessible via the ALSA host API.

+9 −19 · 1 file changed

• src/core_parts/audio_devices.py +9 −19

diff --git a/src/core_parts/audio_devices.py b/src/core_parts/audio_devices.py
index 0aee588..449c701 100644
--- a/src/core_parts/audio_devices.py
+++ b/src/core_parts/audio_devices.py
@@ -19,12 +19,10 @@ def get_preferred_hostapi_index():
 
 
 def get_mic_names():
-    """Get list of all input device names, organized by priority.
+    """Get list of all input device names from ALSA (includes PipeWire-exposed devices).
 
-    Returns all devices with input channels, prioritized as:
-    1. PipeWire/Pulse (most stable routing)
-    2. ALSA hardware devices
-    3. JACK devices (for advanced routing/loopback)
+    JACK API is excluded as it causes memory corruption crashes.
+    PipeWire exposes JACK devices through ALSA, so they should still be available.
     """
     devices_list = sd.query_devices()
     hostapis = sd.query_hostapis()
@@ -37,32 +35,24 @@ def get_mic_names():
             seen_indices.add(i)
             mics.append((i, name))
 
-    # First priority: PipeWire/Pulse virtual devices (stable routing)
+    # First priority: PipeWire/Pulse virtual devices (most stable)
     for i, d in enumerate(devices_list):
         if d['max_input_channels'] > 0:
-            name_lower = d['name'].lower()
             api_name = hostapis[d['hostapi']]['name'].lower()
             if 'alsa' in api_name:
+                name_lower = d['name'].lower()
                 if 'pipewire' in name_lower or name_lower == 'pulse':
                     add_device(i, d['name'])
 
-    # Second priority: ALSA hardware devices
+    # Second priority: All other ALSA input devices
     for i, d in enumerate(devices_list):
         if d['max_input_channels'] > 0:
             api_name = hostapis[d['hostapi']]['name'].lower()
             if 'alsa' in api_name:
                 name_lower = d['name'].lower()
-                # Skip virtual/system devices, add hardware
-                if name_lower not in ('default', 'sysdefault', 'jack', 'dmix'):
-                    if 'hw:' in d['name'] or 'pulse' not in name_lower and 'pipewire' not in name_lower:
-                        add_device(i, d['name'])
-
-    # Third priority: JACK devices (for loopback/advanced routing)
-    for i, d in enumerate(devices_list):
-        if d['max_input_channels'] > 0:
-            api_name = hostapis[d['hostapi']]['name'].lower()
-            if 'jack' in api_name:
-                add_device(i, f"[JACK] {d['name']}")
+                # Skip system/virtual devices that don't add value
+                if name_lower not in ('default', 'sysdefault', 'dmix'):
+                    add_device(i, d['name'])
 
     return mics