Update: All open bugs for this font at https://bugs.launchpad.net/ubuntufontbetatesting/+bugs File your bug. Currently there bugs relating to Greek, 1. Letter γ ((U03B3) has an untypical style 2. In letters with YPOGEGRAMMENI, YPOGEGRAMMENI is expected to be under not on the right and 3. Many Greek small letters have untypical style
Here we see some samples of Greek with Ubuntu Font Beta.
Ubuntu Font supports both Greek and Greek Polytonic.
In the following we compare between DejaVu Sans (currently the default font in Ubuntu) and the proposed Ubuntu Font Beta.
This is DejaVu Sans, showing the Greek Unicode Block. This means, modern Greek and Coptic.
This is Ubuntu Font Beta, showing the Greek Unicode Block. Coptic is not covered as it was not part of the requirements for this version of the font (actually Coptic currently uses a separate new Unicode Block so the Coptic here are too low of a priority).
This is DejaVu Sans showing the Greek Polytonic Unicode Block coverage. We show the second part of the Unicode Block which has the most exotic characters with up to three accents.
Same thing with Ubuntu Font Beta.
Note that those characters that appear as empty boxes are characters that either were not designed by the font designers, or are reserved characters that have not been defined yet.
If there are things to be fixed, this is the time to do them. Post a comment and we can take if further.
Traditionally, the letters γ and ν tend to have a unique form. In this case, in Ubuntu Font Beta, γ looks different to what a Greek user is accustomed to. I attach an SVG file of γ; if you have suggestions for enhancement, please use Inkscape, this gamma_UbuntuBeta-Regular file and make your suggestion!
(see top of post for link to bug reports)