Synaptics driver is not installed [or is not in use]!

[Fernando]

Hi.
After upgrading to 15.04 system settings says that. It is installed, though. My Wacom Bamboo pen&touch works just fine, but I'd like to be able to fine-tunning it.
Thanks!

[Fernando]

Mmm... I tried to uninstall it, then install it again, but nothing. Is there any way to "activate it" or force its usage by the system once it have been installed?