This .po file seems to work without problems.
Compile the file to pulseaudio.mo and move it to /usr/share/locale-langpack/el/LC_MESSAGES/
$ msgfmt -o pulseaudio.mo -v ~/Downloads/el.po $ sudo mv /usr/share/locale-langpack/el/LC_MESSAGES/pulseaudio.mo ~/pulseaudio.mo.bad $ sudo mv ~/pulseaudio.mo /usr/share/locale-langpack/el/LC_MESSAGES/ $ sudo reboot
This .po file seems to work without problems.
Compile the file to pulseaudio.mo and move it to /usr/share/ locale- langpack/ el/LC_MESSAGES/
$ msgfmt -o pulseaudio.mo -v ~/Downloads/el.po locale- langpack/ el/LC_MESSAGES/ pulseaudio. mo ~/pulseaudio.mo.bad locale- langpack/ el/LC_MESSAGES/
$ sudo mv /usr/share/
$ sudo mv ~/pulseaudio.mo /usr/share/
$ sudo reboot