Unwanted installations: removing more recent Lubuntu kernels.

[Basil Fernie]

Hi all, a little light change of topic.

I have three different Lubu releases available on different partitions for  
comparison and other reasons and want to keep it that way, I just want to  
get rid of some of the kernel point releases that are no-longer required.  
They clutter up my boot menu and, no doubt, the hard drive. I've consulted  
some Lubuntu sites regarding removal and have a reasonable idea of the  
difference between apt-get remove and apt-get purge. I suspect that the  
latter is what I want. BUT I specifically want to get back to a version of  
Lubuntu using linux3.19.0-15-generic (which I use a lot, and booted into  
manually from the GRUB menu for the current session) and get rid of the  
more recent one using linux3.19.0-25-generic which doesn't boot to  
completion - no mouse cursor. Rather than fix it, I'll wait for 15.10. In  
the mean while I want to rely on 15.04 with minimum fuss.

Should I be looking at  dpkg --force-downgrade?  If so how should I  
parametrize the command? - I don't want to lose too much...

Thanks in advance,

Basil Fernie
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