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i bought dell inspiron 3520 four days back and installed windows ,Ubuntu 12.04 64 bit(Dual boot).Sound is coming properly from the speakers. if i connect ear phone,there is no sound.specification:intel i5 3rd gen,RAM:8gb.It works well in windows 7 .

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up vote 0 down vote accepted

just need to install the required drivers.After this dist-upgrade .Its working fine now.

sudo add-apt-repository ppa:ubuntu-audio-dev/ppa

sudo apt-get update

sudo apt-get dist-upgrade

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