Has anyone successfully run LVDS on Arria V?

Hi guys,

I'm trying to setup SGMII protocol on my Arria V board.

I use the HSMC loopback board to test.

Somehow, I don't receive any signal coming out of the Tx pin. :(

I used the wizard to instantiate altlvds_tx core, things seem to be straight forward. The lock signal is high.

Anyone successfully run the LVDS with Arria V ES?

-Jeff