Sound Problems, Found information here https://help.ubuntu.com/community/HdaIntelSoundHowto that help me have have better sound quality. 1. Type below to find out what sound card you are using. cat /proc/asound/card0/codec#* | grep Codec Dell Precision T3400 uses a Codec: Analog Devices AD1984 2. View this file /usr/share/doc/alsa-base/driver/ALSA-Configuration.txt.gz and search for AD1984, You should see that the T3400 ..