[SOLVED] upgraded linux 3.15.8-1 to 3.16.1-1 but uname showing 3.15

Question

I am hoping I am just missing something simple with this.
After upgrading my laptop today from 3.15 to 3.16 my network adapter and Xorg stopped working.
Network adapter is giving me the error:
timed out wating for device sys-subsytem-net-devices-ens5.sevice
And Xorg is giving me:
(EE) No devices detected
(EE) no screens found
Well I have been googling around and checking out the Arch forums and came across a thread with the same Xorg error.  When I was typing my response to it I realized:
uname -a
Linux MacBook 3.15.8-1-ARCH #1 SMP PREEMPT Fri Aug 1 08:51:42 CEST 2014 x84_64 GNU/Linux
What did I miss that the new kernel is not loading?
I am using Grub2 as a boot loader.
Last edited by kramlegan (2014-08-15 14:42:00)

Answer 1

I am unable to mount the boot partition now.
I get the error
mount: unknown filesystem type 'vfat'
It looks like it has to do with running the incorrect kernel.
https://bbs.archlinux.org/viewtopic.php?id=28437
the key is that the kernel is updated ( e.g. from 2.23 -> 2.24 ).
the vfat kernel module reside in difference directory (/lib/modules/XXXx-2.24/)after update.
but the kernel version in /proc is the old one , until you reboot.
if you don't reboot, when load the vfat module, the insmod will search the /lib/modules/`uname -r` , which can found nothing to load. well, what you get is nothing but some string like
# modprobe vfat
Any other suggestions on how to fix this?