Dear all,
I would like to use the light version of the Ubuntu font both for text and
for text in math environment. The list of fonts is the following




















*mtxrun --script fonts --list --all  | grep
ubuntuubuntu
ubuntu
/home/flavien/.fonts/Ubuntu-R.ttfubuntubold
ubuntubold
/home/flavien/.fonts/Ubuntu-B.ttfubuntubolditalic
ubuntubolditalic
/home/flavien/.fonts/Ubuntu-BI.ttfubuntucondensed
ubuntucondensedregular
/home/flavien/.fonts/Ubuntu-C.ttfubuntucondensednormal
ubuntucondensedregular
/home/flavien/.fonts/Ubuntu-C.ttfubuntucondensedregular
ubuntucondensedregular
/home/flavien/.fonts/Ubuntu-C.ttfubuntuitalic
ubuntuitalic
/home/flavien/.fonts/Ubuntu-RI.ttfubuntulight
ubuntulight
/home/flavien/.fonts/Ubuntu-L.ttfubuntulightitalic
ubuntulightitalic
/home/flavien/.fonts/Ubuntu-LI.ttfubuntumedium
ubuntumedium
/home/flavien/.fonts/Ubuntu-M.ttfubuntumediumitalic
ubuntumediumitalic
/home/flavien/.fonts/Ubuntu-MI.ttfubuntumono
ubuntumonoregular
/home/flavien/.fonts/UbuntuMono-R.ttfubuntumonobold
ubuntumonobold
/home/flavien/.fonts/UbuntuMono-B.ttfubuntumonobolditalic
ubuntumonobolditalic
/home/flavien/.fonts/UbuntuMono-BI.ttfubuntumonoitalic
ubuntumonoitalic
/home/flavien/.fonts/UbuntuMono-RI.ttfubuntumononormal
ubuntumonoregular
/home/flavien/.fonts/UbuntuMono-R.ttfubuntumonoregular
ubuntumonoregular
/home/flavien/.fonts/UbuntuMono-R.ttfubuntunormal
ubuntu
/home/flavien/.fonts/Ubuntu-R.ttfubunturegular
ubuntulight                       /home/flavien/.fonts/Ubuntu-L.ttf*

I tried a script that I used before for Maven pro through,







*\definefontfeature[default][default][script=latin]\definefontfamily[mainface][sans][ubuntulight]\definefallbackfamily
[mainface] [math] [ubuntulight] [math:lowercaseitalic]
[force=yes]\definefallbackfamily [mainface] [math] [ubuntulight]
[math:digitsnormal]    [force=yes]\definefontfamily     [mainface] [math]
[TeX Gyre Pagella Math]\definebodyfontenvironment
[11pt][a=12pt,b=14.4pt,c=17.3pt,d=32pt,interlinespace=13pt]\setupbodyfont[mainface,11pt]*

but it does not work (it is ok if I use ubuntu instead of ubuntulight).
Thanks for your help,
F.