Hello,
to answeer top luigi, here is the result of the command :
in /usr/share/texmf/scripts/context/lua
mtxrun --generate

> MTXrun | resolvers: variable 'SELFAUTOLOC' set to '/usr/bin'
> MTXrun | resolvers: variable 'SELFAUTODIR' set to '/usr'
> MTXrun | resolvers: variable 'SELFAUTOPARENT' set to '.'
> MTXrun | resolvers: variable 'TEXMFCNF' set to ''
> MTXrun | resolvers: variable 'TEXMF' set to ''
> MTXrun | resolvers: variable 'TEXOS' set to '/usr'
> MTXrun | resolvers
> MTXrun | resolvers: warning: no lua configuration files found
> MTXrun | resolvers
> MTXrun | resolvers
>

In 10.10 it was the version packaged by ubuntu like in my 11.04. But before
reproting the bug to ubuntu, I would like to ask here if there is nothing to
do...

I will try the standalone version if no solution was found here.

2011/7/21 Taco Hoekwater <taco@elvenkind.com>

>
>
> On 07/21/11 11:20, Grummfy wrote:
> > Hello everybody,
> > I'm on Ubuntu 11.04 64bits, and try to generate a pdf without success.
> > On ubuntu 10.10 64bit, it works perfectly, but after the upgrade, no ...
> > So I ask you if you have any idea.
>
> Was your 10.10 install a standalone distribution, or Ubuntu's
> repackaged texlive? If it was standalone, then it seems likely
> that 11.04 has installed an ubuntu-repackaged texlive itself,
> that is now overriding the correct installation.
>
> If both installs were ubuntu packages, perhaps you should complain
> to the Ubuntu people.
>
> Best wishes,
> Taco
>



-- 
Van Belle Jonathan