tried to play a dvd, said "no dvd decryption library"
 

very new to linux. fast learner! updating to the newest version has taken care of all of my problems except How to watch a dvd.
details: dell LATITUDE D610 laptop, QIMO was original install on the Ubuntu. at first it did not recognize the wifi,dvd drive,and was glitchy.
updated everything, then noticed the Ubuntu had a new release so updated that.
bam wifi working, dvd RW working, but cannot watch a shrink wrapped dvd.
i choose linux because i was wanting to build an educational computer for my 5 year old son, when i found QIMO, oh my God!
then with how superfunctional this machine has become, and i have yet to learn much about the system!
so how do i get my dvd player to let me watch a store bought movie?
thanks nateybill's dad

Have you installed libdvdcss? Also look at dmesg output.

Check out the information on this link https://help.ubuntu.com/14.04/ubuntu...video-dvd.html