I had other problems with Trisquel 7 - only thing I recall now is that
Synaptic didn't work for me, and I didn't want to do without it - SO I
switched back to Debian till Trisquel 8 was released.
I don't know how to "compile" anything. I have no programming experience at
all, and can't even remember or keep track of enough cmds to make much use of
a terminal, except when someone tells me the verbatim cmd(s) and I can just
paste them in.
As I've mentioned in today's replies to others... I'm now using a different
monitor, for which Trisquel's default setting works, though it (the monitor)
can't be identified so far.
Thanks for the offered help, but if I get in over my head it might cause more
serious problems than I have now.