The update went fairly smoothly. I had to restart the mint update 3 times to get it to complete and answer 3 questions.
I have 4 external sources, bumblebee(
http://suwako.nomanga.net/debian), chrome, spideroak and spotify. Bumblebee is nvidia related so it might have some impact on my issues but I don't think so.
Post reboot, I had no X. So I think it's another nvidia drivers problem. I've managed to get up into gnome fallback mode on the 302 drivers. glx is working fine, so I don't know quite why gnome shell doesn't like them and haven't researched it yet. I use the repos for nvidia. I manually linked the nvidia driver into /usr/lib/xorg/modules/drivers/ and reconfigured glx with update-alternatives to get a display. GLX is running pretty fast but it's not using the right drivers
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x209)
OpenGL version string: 2.1 Mesa 8.0.3
I also had a problem with dbus reaching maximum connections for user root. I changed
<limit name="max_connections_per_user">100000</limit>
by adding a 0 in /etc/dbus-1/session.conf. Prior to that gdm3 would not start. Very nasty. I hope that I've not got something spawning connections in the background.
Xorg complained that udev is not working.
[ 47.447] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
Right now network manager isn't up. Haven't figured out why yet.
Overall the packages installed but fried my nvidia config.
EDIT:
Back up with Gnome shell after redoing update-alternatives for glx and selecting a manual mode for nvidia.
EDIT 2:
I have 442 /usr/lib/gdm3/gdm-simple-slave processes running and gdm3 taking 43% of cpu. The complaint in all the different log files is:
** (gdm-simple-slave:11016): WARNING **: Couldn't connect to system bus: The maximum number of active connections for UID 0 has been reached
dmesg | grep dbus gives
[ 45.636592] colord-sane[2648] general protection ip:7fa3117d84bc sp:7fff1d894178 error:0 in libdbus-1.so.3.7.1[7fa3117b0000+44000] in libdbus-1.so.3.7.1[7fa3117b0000+44000]
I seem to remember hitting a similar error on another box, with the previous update pack.
EDIT 3:
Properly sorting out the nVidia driver issues cured my hundreds of gdm-simple-slave processes. I think dbus is still an issue though because tracker is complaining of reeiving no responses. dbus-monitor shows traffic and seems to indicate replies being sent.