Hi,
Basically neither version is happy doing this. (Then don't do it!).
12.04 will crash on reboot with the screen showing...
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/pci/hda/snd-hda-intel.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/pci/hda/snd-hda-codec-idt.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/pci/hda/snd-hda-codec.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/snd-hwdep.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/snd-pcm-ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/snd-page-alloc.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/seq/snd-seq-miidi.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/snd-rawmiidi.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/seq/snd-seq-midi-event.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/seq/snd-seq.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/snd-timer.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/seq/snd-seq-device.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/core/snd.ko
rmmod /lib/modules/3.2.0-60-generic/kernel/sound/sound/soundcore.ko
I ran recovery mode and appended rw init=/bin/bash to the end of the linux line so I could get around that aggrevating enter root password - for maintenance or Control-D to continue and the root password always fails.
Anyway, I checked the xorg.conf in 12.04 and the nouveau driver was still listed. I tried changing to nvidia but no joy, LMCE does reboot but hangs at oribter generation - I think.
14.04 booted with an error message, then rebooted and stalled @ orbiter generation, again, I think.
This is the log activity...
Start-Date: 2014-06-05 14:49:38
Commandline: apt-get install nvidia-current
Install: nvidia-opencl-icd-304:i386 (304.117-0ubuntu1, automatic), nvidia-settings:i386 (331.20-0ubuntu8, automatic), nvidia-libopencl1-304:i386 (304.117-0ubuntu1, automatic), screen-resolution-extra:i386 (0.17.1, automatic), nvidia-current:i386 (304.117-0ubuntu1), libcuda1-304:i386 (304.117-0ubuntu1, automatic), nvidia-304:i386 (304.117-0ubuntu1, automatic)
Error: Sub-process /usr/bin/dpkg returned an error code (1)
End-Date: 2014-06-05 14:51:30
Setting up libcuda1-304 (304.117-0ubuntu1) ...
Setting up nvidia-304 (304.117-0ubuntu1) ...
update-alternatives: using /usr/lib/nvidia-304/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode
update-alternatives: warning: skip creation of /usr/lib32/vdpau/libvdpau_nvidia.so.1 because associated file /usr/lib32/nvidia-304/vdpau/libvdpau_nvidia.so.1 (of link group i386-linux-gnu_gl_conf) doesn't exist
update-alternatives: warning: skip creation of /usr/lib32/libvdpau_nvidia.so because associated file /usr/lib32/nvidia-304/vdpau/libvdpau_nvidia.so (of link group i386-linux-gnu_gl_conf) doesn't exist
update-alternatives: using /usr/lib/nvidia-304/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode
update-alternatives: using /usr/share/nvidia-304/glamor.conf to provide /usr/share/X11/xorg.conf.d/glamoregl.conf (glamor_conf) in auto mode
update-initramfs: deferring update (trigger activated)
INFO:Enable nvidia-304
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/put_your_quirks_here
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/lenovo_thinkpad
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/dell_latitude
Loading new nvidia-304-304.117 DKMS files...
First Installation: checking all kernels...
Building only for 3.13.0-24-generic
Building for architecture i686
Building initial module for 3.13.0-24-generic
Done.
nvidia_304:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/3.13.0-24-generic/updates/dkms/
depmod.......
DKMS: install completed.
Setting up nvidia-current (304.117-0ubuntu1) ...
Setting up nvidia-libopencl1-304 (304.117-0ubuntu1) ...
Setting up nvidia-opencl-icd-304 (304.117-0ubuntu1) ...
Setting up screen-resolution-extra (0.17.1) ...
Setting up nvidia-settings (331.20-0ubuntu8) ...
Processing triggers for libc-bin (2.19-0ubuntu6) ...
Processing triggers for initramfs-tools (0.103ubuntu4.1) ...
update-initramfs: Generating /boot/initrd.img-3.13.0-24-generic
Log ended: 2014-06-05 14:51:30
This is from 14.04 but it appears exactly like 12.04 messgaes.
14.04 logs complains about module license 'NVIDIA" taints kernel. Signature and/or required key missing - tainting kernel.
Cheers.