[Trisquel-users] Re : Resolution issue

[magicbanana]

Radeon drivers are the worst among the popular video card brands (the other  
two being nVidia and Intel, the best). You can try (no guarantee it will  
work) to update the Linux kernel (hence the "nouveau" drivers for your card)  
to version 3.11. To do so, you only need to install (using the "Synaptic  
package manager" for instance) the package named "linux-generic-lts-saucy".

You can also try to update the rest of the graphical stack (although there  
may be some package conflicts issues) by installing:
libegl1-mesa-lts-saucy
libgles1-mesa-lts-saucy
libgles2-mesa-lts-saucy
xserver-xorg-lts-saucy