Thanks SuperTramp and all the posts on
http://trisquel.info/en/forum/screen-resolution-0
I followed meydlo's suggested steps but for some reason the 3.11 kernel he
got wasn't found though I had added the repository to the list. Having
earlier followed the instructions to set up the
http://jxself.org/linux-libre/ repository, I used apt to get
linux-libre64-3.10. I had already commented out the modprobe.d references to
radeon.
Also, never mentioned outsudoing myself using addgroup -G wireshark to get
wireshark running earlier but as a result I know about the user grub and have
his password handy. Rebooted and chose the 3.10 kernel and voila! 1920 X 1080
resolution looks kind of strange after a couple of weeks at 1600 X 1200. But
I'll get used to it. ^v*
Is the best way to remove the other kernels via the synaptic?