If you have more than one sound card and you want to see the second one in the list of the main mixer window, you can make it visible using the sound card combo box. However, if you close the mixer and open it again, you'll notice that the first card is now selected. This can become very annoying if you always want to see the second sound card. Solution: Remember the sound card used last time and select it on the next startup.
Implemented in revision 27629: * libxfce4mixe/xfce-mixer-card-combo.c, xfce4-mixer/xfce-mixer-window.c: Remember the selected sound card so that it is selected again on next startup. Use xfce_mixer_card_get_name() instead of xfce_mixer_card_get_display_name() to determine the active card index in XFceMixerCardCombo.