It's a little bit sad that there is no real offer...
Perhaps tomorrow we'll have "open-source hardware" laptop
(http://en.wikipedia.org/wiki/List_of_open_source_hardware_projects) which
respects social and environmental conditions...
In my search, I found just Terra mobile by Wortmann which seems to be good.
It's one of the biggest independant european manufacturer. So, this
enterprise must follow the german and european labour law and it respects
some environmental protection rules (Sorry it's in french,
http://www.matrix-appliances.com/media/terra_charte-environnementale.pdf and
http://www.matrix-appliances.com/media/GreenIt_2011-[pdf%20object].wwf)
Terra mobile :
https://webshop.wortmann.de/commerceportal/default.asp?PageNo=DEFAULT
The only problem, it's a windows laptop. I sent them an email to know if it's
possible to have one without any OS.
I found also that for linux laptops
http://linuxpreloaded.com/
Like you can see, there is the trisquel's logo with the thinkpenguin's
laptop.
