Installing Musescore on ubuntu 14.04

• Apr 19, 2015 - 21:37


I am trying to install musescore 2.0 onto Ubuntu 14.04

I have added :

to the software sources in unbuntu software center.

when I try to install I get the message:

This requires installing packages from unauthenticated sources

libqt5clucene5 libqt5core5a libqt5dbus5 libqt5gui5 libqt5help5 libqt5network5 libqt5opengl5 libqt5printsupport5 libqt5qml5 libqt5quick5 libqt5sql5 libqt5sql5-sqlite libqt5svg5 libqt5webkit5 libqt5widgets5 libqt5xml5 libqt5xmlpatterns5 musescore musescore-common qml-module-qtquick-localstorage qml-module-qtquick-window2 qml-module-qtquick2 qml-module-qtwebkit

Please Can anybody help me?

Also My email address is


I have just installed Musescore2 into UbuntuStudio 1404 and the process was very straightforward.

The full formula that you should have added to the software sources in ubuntu is, without the quotes :

"deb trusty main"

If you get a message about 'unauthenticated sources', you most probably didn't import the signing key. Then you should input the PPA 's gpa signing key (ID 0x3a258030 - the fingerprint is provided on the launchpad page for this PPA). Use the Authentication tab in the dialogue box where you entered the PPA software address.

You can also use a terminal - the procedure is explained if you click the 'What is this?' link against the signing key ID on the PPA launchpad page.

Then open Synaptic Package Manager , reload, select musescore. You will see version 2 listed, mark it for update. All dependencies will be listed and you click to agree to mark them too and then click 'apply'.
The whole process took about 15 minutes.

Hope this helps.

In reply to by petrous23

Thank you for help so far.

i have entered the software source with deb at the front of the address.

in terminal I ran :
sudo apt-get update
sudo apt-key adv --keyserver --recv-keys 3A258030
and recieved this message:

sudo apt-key adv --keyserver --recv-keys 3A258030
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.mrqzAEP006 --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/gwibber-daily-ppa.gpg --keyserver --recv-keys 3A258030
gpg: requesting key 3A258030 from hkp server
gpg: key 3A258030: public key "Launchpad PPA named mscore-stable for MuseScore Maintainers" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)

so I figured I now have the correct software source and the ppa key?

I have tried to install musescore and have the same error?

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