同一个系统，同一个机器。之前是有声音的。重装系统之后，没有安装 GNome 桌面。amarok 解码器也安装了。但是就是没有声音。使用命令打印 amarok，打印如下，想知道是哪儿出错的吗？还有就是 VLC 只有画面没有声音。重装系统前安装的是 smplayer，也是只有画面没有声音。想知道是怎么回事！！！
free@linux-d9co:~> amarok
(amarok:4771): GStreamer-CRITICAL **: gst_object_ref_sink: assertion 'object != NULL' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_bus: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_bus_set_sync_handler: assertion 'GST_IS_BUS (bus)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(amarok:4771): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_object_unref: assertion 'object != NULL' failed
(amarok:4771): GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT (object)' failed
(amarok:4771): GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT (object)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_set_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
** (amarok:4771): CRITICAL **: gst_audio_ring_buffer_set_flushing: assertion 'GST_IS_AUDIO_RING_BUFFER (buf)' failed
** (amarok:4771): CRITICAL **: gst_audio_ring_buffer_may_start: assertion 'GST_IS_AUDIO_RING_BUFFER (buf)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_set_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(7) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(7) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(7) to UNKNOWN!(6)
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_set_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from PLAYING to UNKNOWN!(5)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(5) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(6) to UNKNOWN!(7)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(7) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(7) to UNKNOWN!(6)
(amarok:4771): GStreamer-WARNING **: Unhandled state change from UNKNOWN!(7) to UNKNOWN!(6)
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
(amarok:4771): GStreamer-CRITICAL **: gst_element_get_state: assertion 'GST_IS_ELEMENT (element)' failed
libpng warning: iCCP: known incorrect sRGB profile
QWidget::insertAction: Attempt to insert null action
**********************************************************************************************
** AMAROK WAS STARTED IN NORMAL MODE. IF YOU WANT TO SEE DEBUGGING INFORMATION, PLEASE USE: **
** amarok --debug **
**********************************************************************************************
free@linux-d9co:~>
(amarok:4771): GStreamer-CRITICAL **: gst_element_query: assertion 'GST_IS_ELEMENT (element)' failed
Calling appendChild() on a null node does nothing.