I guess it was due to missing codecs. anyways, after installing them according to http://wiki.ubuntuusers.de/Codecs I can now play DVDs. just want to mention that am playing DVDs I officially bought or borought from a librarary and that was not possible prior to installing those packages listed in that wiki artikel.
-- I cannot play any kind of video file in my UBUNTU. https://bugs.launchpad.net/bugs/403907 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs