[Trisquel-users] Re : How can I install kernel 3.19 or higher.

[lcerf]

You can use an "LTS enablement stack" too. Linux-libre 3.19 and 4.2 are  
available in Trisquel's repository. For the latter, simply install the  
package named "linux-image-generic-lts-wily" (e.g., using the "Synaptic  
package manager" in the "System settings").