Dash shows no applications - 17.04 new install

[corrado venturini]

I installed Ubuntu 17.04 unity from the daily: Ubuntu 17.04 "Zesty Zapus" - Alpha amd64 (20170118)
corrado@corrado-Z2:~$ uname -a
Linux corrado-Z2 4.9.0-12-generic #13-Ubuntu SMP Mon Jan 9 20:06:25 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
corrado@corrado-Z2:~$
when i click the dash icon in the launcher the dash opens, remains some seconds with .. searching and then: sorry, there is nothing that matches ... If I click on the dash plugin for applications i see only the dash plugins. Some applications appear only when I enter some text in the search for ...
The dash works fine in another 17.04 installed some time ago on the same desktop, different partition.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1658671/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[corrado venturini (corradoventu)]

added package as requested

[corrado venturini (corradoventu)]

reinstalled from: Ubuntu 17.04 "Zesty Zapus" - Alpha amd64 (20170123)
problem still here

[corrado venturini (corradoventu)]

Jan 24 08:44:37 corrado-z2 zeitgeist-datah[2415]: Unable to connect to Zeitgeist's DataSourceRegistry: Error calling StartServiceByName for org.gnome.zeitgeist.Engine: Timeout was reached
Jan 24 08:44:37 corrado-z2 zeitgeist-datah[2415]: zeitgeist-datahub.vala:103: Error calling StartServiceByName for org.gnome.zeitgeist.Engine: Timeout was reached
Jan 24 08:45:44 corrado-z2 dbus-daemon[1648]: Failed to activate service 'org.gnome.zeitgeist.Engine': timed out

[corrado venturini (corradoventu)]

adding screenshot

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[corrado venturini (corradoventu)]

starting the dash i find this in the log ...

[corrado venturini (corradoventu)]

I think this is a duplicate of https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1661697

[corrado venturini (corradoventu)]

i can confirm .local/share/zeitgiest, it's empty