It would be quite unusual for a package that runs in F9 to fails to run in F12 unless it had some very strange (and, probably, unsafe) kernel dependency. The ELF specifications have, IIRC, not been substantially changed in several years. I suspect
that your reason for not upgrading is, um, not really applicable.
Anyhow, you need the synaptics
package. I looked at my old F9 installation disk, and this is what I found:
$ rpm -qlp `find /media/cd/ -name *synaptics*`
warning: /media/cd/Packages/synaptics-0.14.6-7.fc9.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 4f2a6fd2
If you've got that driver installed, then, for some reason, the syndaemon
is not restarted after a resume. So, see if man syndaemon
gives you a hint of how to (re)start that daemon. (I have no memory of how that driver works, and the current Fedora system just use the Xorg synaptics driver rather than a "stahd-alone" driver that, apparently, was used in F9.