http://en.wikipedia.org/wiki/Line_level
does the arrrow point inward or outward ?
for the front blue jack , try hda-jack-sense-test -a and plugged the loopback cable to find out the node of the jack
http:// en.wikipedia. org/wiki/ Line_level
does the arrrow point inward or outward ?
for the front blue jack , try hda-jack-sense-test -a and plugged the loopback cable to find out the node of the jack