2 Issues after updating to linux-generic-lts-wily

Installing Trisquel 7.0 on my desktop, I was receiving regular freezes
of the x display with the error "nouveau failed to idle channel". An
issue I've had before with this graphics card on other distros. After
updating my kernel with the package linux-generic-lts-utopic, and the
problem still being present, I tried wily. It seems this fixed things,
I've been using it for some time now with no freezes. However it has
created two other even more annoying issues that don't occur when I boot
with the older kernels from grub:

I can't use my normal wireless USB keyboard on the boot screen where I
enter my passphrase, another wireless USB keyboard works (it's a mini,
so not good for normal use). All I can find, for the same issue on
Ubuntu, is installing the initramfs-tools package. However doing this on
Trisquel did not work.

Network connectivity just stops working after a few minutes. I've still
got an assigned IP using ifconfig, but I cannot access anything on my
own network or the internet. It's not a DHCP issue as I've tried things
on my local network which I usually access with an IP.

Thanks for any help!