I'm having problems playing DVDs in Ubuntu Jaunty (9.04); some DVDs work, but most don't. The error message in dmesg is:

end_request: I/O error, dev sr0

All DVD player programs simply freeze after this error.


It is css encrypted disks that causes this error. The solution is to install libdvdcss2, which can be install by first installing libdvdread4, and then running


This will add the medibuntu-repos and install libdvdcss2 and solve the problem.

  • Thanks! This fixed my problem. Unfortunately a little late; I already bought a brand new DVD drive and SATA cables only to discover I still couldn't play DVDs. Thank you very much to the media industry, making just a bit more profit thanks to ridiculous DRM!
    – mgiuca
    Feb 27 '11 at 1:26

The Medibuntu repository has the packages for supporting encrypted DVD playback. Check out this page on the Ubuntu Wiki for installation details.

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