the drivers for intel is the package: xserver-xorg-video-intel . You can see
it in synaptic.
Attention:
I don't know if this package are free of blobs, because is not from Trisquel
repos.
You can install:
sudo add-apt-repository ppa:xorg-edgers/ppa
sudo update
sudo upgrade
Also new mesa drivers requaire kernel 3.6 or newer. For my is working with a
libre kernel 3.10.
Look at these screen shoots to see what packages I have !
http://postimg.org/image/f4scnivyb/
http://postimg.org/image/fusghudxj/
http://postimg.org/image/k4nn54imh/
http://postimg.org/image/4fptkyhmp/
