<div dir="ltr"><div>Besides of what was written before ubuntu 12.04 is no longer maintained. Your error means that you cannot fetch packages any more. </div>m. </div><div class="gmail_extra"> <div class="gmail_quote">2016-03-23 4:41 GMT+01:00 mmisas <<a href="mailto:mmisasken@gmail.com" target="_blank">mmisasken@gmail.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello, I am trying to install Gstreamer SDK on my Ubuntu Linux machine 12.04. I have followed the below steps that are documented in the <a href="http://docs.gstreamer.com/display/GstSDK/Installing+on+Linux" rel="noreferrer" target="_blank">http://docs.gstreamer.com/display/GstSDK/Installing+on+Linux</a>. Steps followed: 1] Downloaded the gstreamer-sdk.list from the location 2] sudo cp gstreamer-sdk.list /etc/apt/sources.list.d/ 3] wget -q -O - <a href="http://www.freedesktop.org/software/gstreamer-sdk/sdk.gpg" rel="noreferrer" target="_blank">http://www.freedesktop.org/software/gstreamer-sdk/sdk.gpg</a> | sudo apt-key add - 4] sudo apt-get update But I am always met with this error. Please can someone help me to fix this problem. Thanks. Ign <a href="http://www.freedesktop.org" rel="noreferrer" target="_blank">http://www.freedesktop.org</a> ./ Release.gpg Ign <a href="http://www.freedesktop.org" rel="noreferrer" target="_blank">http://www.freedesktop.org</a> ./ Release Err <a href="http://www.freedesktop.org" rel="noreferrer" target="_blank">http://www.freedesktop.org</a> ./ Packages Undetermined Error Ign <a href="http://www.freedesktop.org" rel="noreferrer" target="_blank">http://www.freedesktop.org</a> ./ Translation-en_US Ign <a href="http://www.freedesktop.org" rel="noreferrer" target="_blank">http://www.freedesktop.org</a> ./ Translation-en Fetched 948 B in 10min 1s (1 B/s) W: GPG error: <a href="http://ppa.launchpad.net" rel="noreferrer" target="_blank">http://ppa.launchpad.net</a> precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A1715D88E1DF1F24 W: GPG error: <a href="http://ppa.launchpad.net" rel="noreferrer" target="_blank">http://ppa.launchpad.net</a> precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EB9B1D8886F44E2A W: GPG error: <a href="http://ppa.launchpad.net" rel="noreferrer" target="_blank">http://ppa.launchpad.net</a> precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C2518248EEA14886 W: Failed to fetch <a href="http://www.freedesktop.org/software/gstreamer-sdk/data/packages/ubuntu/precise/i386/./Packages" rel="noreferrer" target="_blank">http://www.freedesktop.org/software/gstreamer-sdk/data/packages/ubuntu/precise/i386/./Packages</a> Undetermined Error E: Some index files failed to download. They have been ignored, or old ones used instead. -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Gstreamer-SDK-installation-issue-in-Ubuntu-12-04-tp4676503.html" rel="noreferrer" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/Gstreamer-SDK-installation-issue-in-Ubuntu-12-04-tp4676503.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div> </div>