Update: I\'ve slogged blindly through the inner working of the Z\'s suspend and resume scripts, and it appears that /usr/local/bin/apm.rom is missing.
I made a calculated guess that this was supposed to be a symlink to /usr/local.rom/apm
...drumroll, please...
The suspend button works!
I\'m not opening the champagne yet, but the problem seems to be fixed, which leaves me wondering: how did this happen in the first place? How did this one lonely item (please, please, please let it be just this one) get excluded from the backup? Perusing the \"All Data\" tab of the backup, I see no symlinks whatsoever listed, although it appears all others were restored normally...