update manager refuses to upgrade kernel to newer version

[Ralf Mardorf]

On Fri, 12 Feb 2016 04:00:57 -0500, Gene Heskett wrote:
>On Friday 12 February 2016 03:48:39 Spyros Tsiolis wrote:
>> /boot/vmlinuz-3.13.0-77-generic /usr/sbin/grub-probe: error: cannot
>> find a device for / (is /dev mounted?). run-parts:

The culprit seems to be /usr/sbin/grub-probe.

>The messages are quite clear, you do not have the quoted firmware
>files for any version of /lib/firmware/rtl_nic/rtl8106(alphabet).fw,
>are they installed according to your favorite package manager?
>Their lack is preventing it from building a new initrd for the new 
>kernel.  And the errors will remain until you install them.

I don't think so, usually it doesn't matter if you get firmware
warnings.