Missing Mouse Pointer on LXDE

I’ve installed a Ubuntu 14.04 on my BeagleBoard Xm, every thing works just fine. (Used this tutorial: http://elinux.org/BeagleBoardUbuntu#Trusty_14.04)

But now I installed a GUI by LXDE but the mouse pointer is missing, i can click and use the mouse normally, it simply don’t appear.
I had installed using this command: "apt-get install lxde".

I tried too the Lubuntu interface, but I got the same problem.

Anyone knows what I could try?

This flag in xorg.conf usually helps: