This package contains a volume control application based on GStreamer written to conceptually fit into the Xfce desktop environment. It also includes a plugin for the Xfce panel.
The panel plugin optionally supports global keyboard shortcuts for raising and lowering the volume, as well as muting the selected track if compiled against libkeybinder. The plugin will then handle the XF86AudioRaiseVolume, XF86AudioLowerVolume, and XF86AudioMute keyboard symbols.
The mixer application supports the following properties in the xfce4-mixer channel:
/window-width width of the main window (integer) /window-height height of the main window width (integer) /sound-card selected sound card (string) /sound-cards/* visible controls of a particular sound card (array
The panel plugin supports the following properties:
sound-card selected sound card (string) track selected track (sting) command command which can be run from the plugin menu
enable-keyboard-shortcuts enables or disables keyboard shortcuts (boolean)
Both the mixer application and the panel plugin have a builtin debugging mode which will print additional diagnostic output useful for bug reports. For xfce4-mixer it can be activated by specifying the –debug command line option, diagnostic messages will be printed to stderr. For the panel plugin, please follow the instructions at http://docs.xfce.org/xfce/xfce4-panel/debugging and set the PANEL_DEBUG environment variable to “xfce4-mixer-plugin,gdb”, the diagnostic output will be printed to stderr and backtraces will appear in the log file corresponding to the plugin.
Known Problems with GStreamer
- No sound card detected: if this happens you're probably missing a
GStreamer plugin for your sound system. If you get this message on a Debian
or Ubuntu system and you're using ALSA then installing gstreamer0.10-alsa should fix it. On OpenBSD installing gst-plugins-good might help.