我安装了 Kazam 来录制屏幕。视频捕捉很好，但音频质量很差。所以我买了一个更好的麦克风。
新的麦克风虽然更适合与其他程序（如 Audacity）一起使用，但具有 USB 输入而不是 3.5 毫米，并且某些程序（如 Firefox 和 Kazam）无法识别它。因此，我必须安装 Pulseaudio 音量控制并对其进行配置，以便使用我的新麦克风为每个应用程序录制音频。
现在 Firefox 可以识别我的麦克风，Audacity 和 Skype 也可以识别，但 Kazam 面临一个更大的问题：每次我尝试停止录音时，它都会冻结！所以事实上我根本无法记录任何东西。我尝试重新安装 Kazam。这没有帮助。
我尝试在调试模式下运行 Kazam 并得到以下输出：
DEBUG Kazam - Starting ...
DEBUG Kazam - Running on: debian 8.7
DEBUG Kazam - Kazam version: 1.4.5 NCC-80102
DEBUG Kazam - Starting new instance ...
DEBUG Prefs - XDG_PICTURES is a directory and accessible
DEBUG Prefs-HW - Getting hardware specs
DEBUG Prefs-HW - Getting Video sources.
DEBUG Prefs-HW - Found 1 monitor(s).
DEBUG Prefs-HW - Monitor 0 - X: 0, Y: 0, W: 1280, H: 720
DEBUG Main - Gstreamer version detected: 1.4.4.0
DEBUG Main - Setting variables.
DEBUG PulseAudio - Starting mainloop.
DEBUG PulseAudio - Getting API.
DEBUG PulseAudio - Setting context.
DEBUG PulseAudio - Set state callback.
DEBUG PulseAudio - Connecting to server.
DEBUG PulseAudio - Start mainloop.
DEBUG PulseAudio - State connected.
DEBUG Main - Connecting indicator signals.
DEBUG Main - Starting in silent mode: False
DEBUG Indicator - Indicatior silent: False
DEBUG Indicator - Trying to bind hotkeys.
DEBUG Main - Main Window UI setup.
/usr/lib/python3/dist-packages/kazam/app.py:145: Warning: value "((GtkIconSize) 32)" of type 'GtkIconSize' is invalid or out of range for property 'icon-size' of type 'GtkIconSize'
self.builder.add_from_file(os.path.join(prefs.data dir, "ui", "kazam.ui"))
DEBUG Main - Unable to get name for '<Adjustment object at 0x7f425f232318 (GtkAdjustment at 0x2d62200)>'
(kazam:12111): Gtk-WARNING **: Symbolic icon kazam-screencast-symbolic of size 24 is in an icon theme directory of size 16
(kazam:12111): Gtk-WARNING **: Symbolic icon kazam-screenshot-symbolic of size 24 is in an icon theme directory of size 16
(kazam:12111): Gtk-WARNING **: Can't set a parent on widget which has a parent
(kazam:12111): Gtk-WARNING **: Symbolic icon kazam-fullscreen-symbolic of size 24 is in an icon theme directory of size 16
(kazam:12111): Gtk-WARNING **: Symbolic icon kazam-all-screens-symbolic of size 24 is in an icon theme directory of size 16
(kazam:12111): Gtk-WARNING **: Symbolic icon kazam-window-symbolic of size 24 is in an icon theme directory of size 16
(kazam:12111): Gtk-WARNING **: Symbolic icon kazam-area-symbolic of size 24 is in an icon theme directory of size 16
(kazam:12111): Gtk-WARNING **: Can't set a parent on widget which has a parent
DEBUG Prefs - Getting Audio sources.
DEBUG PulseAudio - get_audio_sources() called.
DEBUG PulseAudio - pa_sourcelist_cb()
DEBUG PulseAudio - IDX: 0
DEBUG PulseAudio - Name: b'alsa_output.pci-0000_00_1b.0.analog-stereo.monitor'
DEBUG PulseAudio - Desc: b'Monitor of Audio Interno Est\xc3\xa9reo Anal\xc3\xb3gico'
DEBUG PulseAudio - pa_sourcelist_cb()
DEBUG PulseAudio - IDX: 1
DEBUG PulseAudio - Name: b'alsa_input.pci-0000_00_1b.0.analog-stereo'
DEBUG PulseAudio - Desc: b'Audio Interno Est\xc3\xa9reo Anal\xc3\xb3gico'
DEBUG PulseAudio - pa_sourcelist_cb()
DEBUG PulseAudio - IDX: 8
DEBUG PulseAudio - Name: b'alsa_output.usb-Audio-Technica_ATR_USB_microphone-00-microphone.analog-stereo.monitor'
DEBUG PulseAudio - Desc: b'Monitor of ATR USB microphone Est\xc3\xa9reo Anal\xc3\xb3gico'
DEBUG PulseAudio - pa_sourcelist_cb()
DEBUG PulseAudio - IDX: 9
DEBUG PulseAudio - Name: b'alsa_input.usb-Audio-Technica_ATR_USB_microphone-00-microphone.analog-stereo'
DEBUG PulseAudio - Desc: b'ATR USB microphone Est\xc3\xa9reo Anal\xc3\xb3gico'
DEBUG PulseAudio - pa_sourcelist_cb() -- finished
DEBUG Prefs - Device found:
DEBUG Prefs - - 0
DEBUG Prefs - - alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
DEBUG Prefs - - Monitor of Audio Interno Estéreo Analógico
DEBUG Prefs - Device found:
DEBUG Prefs - - 1
DEBUG Prefs - - alsa_input.pci-0000_00_1b.0.analog-stereo
DEBUG Prefs - - Audio Interno Estéreo Analógico
DEBUG Prefs - Device found:
DEBUG Prefs - - 8
DEBUG Prefs - - alsa_output.usb-Audio-Technica_ATR_USB_microphone-00-microphone.analog-stereo.monitor
DEBUG Prefs - - Monitor of ATR USB microphone Estéreo Analógico
DEBUG Prefs - Device found:
DEBUG Prefs - - 9
DEBUG Prefs - - alsa_input.usb-Audio-Technica_ATR_USB_microphone-00-microphone.analog-stereo
DEBUG Prefs - - ATR USB microphone Estéreo Analógico
DEBUG Main - Capture speakers: True.
DEBUG Main - Capture microphone: True.
DEBUG Main - Capture cursor_pic: True.
DEBUG Main - Capture borders_pic: True.
DEBUG Main - Start delay now: 3
DEBUG Main - Record clicked, invoking Screencast.
DEBUG GStreamer - Audio_source : alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
DEBUG GStreamer - Audio2_source : alsa_input.usb-Audio-Technica_ATR_USB_microphone-00-microphone.analog-stereo
DEBUG GStreamer - Video_source: {'height': 720, 'x': 0, 'width': 1280, 'y': 0}
DEBUG GStreamer - Xid: None
DEBUG GStreamer - Area: None
DEBUG GStreamer - Capture Cursor: False
DEBUG GStreamer - Framerate : 15.0
DEBUG GStreamer - Coordinates SX: 0 SY: 0 EX: 1279 EY: 719
DEBUG GStreamer - testing for xid: None
DEBUG GStreamer - Codec: H264 (MP4)
DEBUG GStreamer - Setup audio elements.
DEBUG GStreamer - Audio1 Source:
alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
DEBUG GStreamer - Audio2 Source:
alsa_input.usb-Audio-Technica_ATR_USB_microphone-00-microphone.analog-stereo
DEBUG GStreamer - Filesink: /home/gabi/Vídeos/kazam_jmxt5pgq.movie
DEBUG GStreamer - Linking Video
DEBUG GStreamer - Linking Audio
DEBUG GStreamer - Link audiosrc -> aud_in_queue: True
DEBUG GStreamer - Link aud_in_queue -> aud_caps_filter: True
DEBUG GStreamer - Linking Audio2
DEBUG GStreamer - Link aud_caps_filter -> audiomixer: True
DEBUG GStreamer - Link audio2src -> aud2_in_queue: True
DEBUG GStreamer - Link aud2_in_queue -> aud2_caps_filter: True
DEBUG GStreamer - Link aud2_caps_filter -> audiomixer: True
DEBUG GStreamer - Link audiomixer -> audioconv: True
DEBUG GStreamer - Link audioconv -> audioenc: True
DEBUG GStreamer - Link audioenc -> aud_out_queue: True
DEBUG GStreamer - Link aud_out_queue -> mux: True
DEBUG GStreamer - Link mux -> file queue: True
DEBUG GStreamer - Link file queue -> sink: True
DEBUG Main - Hiding main window.
DEBUG Main - Counter finished.
DEBUG Indicator - Recording started.
DEBUG GStreamer - Setting STATE_PLAYING
DEBUG Indicator - Recording stopped.
DEBUG Main - Stop request.
DEBUG GStreamer - Sending new EOS event
那时，它会冻结并且不执行任何其他操作。它再也不会向我显示选项窗口，除非我终止该进程，否则我什至无法关闭它。
如果我将 Pulseaudio 音量控制设置为使用设备的监视器而不是设备本身，那么我可以停止录制并保存文件，但无法重现它。我得到的只是一秒钟的沉默，没有视频，Kazam 无法删除临时的 0 字节 .movie 文件。