As I now noticed a problem with the necessity of user input (for interrupt the screen saver) you reported also in the bug report 1615. It is possible that bug fixed in commit cbbc7ad0 could be related also with NFS on /home?
Can you try it?
I created a test patch to restore autosupend in tdepowersave when $HOME is a network mount. I attached the patch to bug report 1623.
After rebuilding tdelibs with the test patch, commit cbbc7ad0 does not resolve the problem of trying to autosuspend when $HOME is a network mount.
Darrell