Where is my "system.hardware.vendor" property?

[pi3orama]

Hello everyone,
Sorry for me abruptness, but I don't know where to post my question.
I'm trying to build "Linux from scrash" system on a Dell Inspiron 1520
and everything seems OK. But when I start haldaemon before startx, I
found the "Win" key (super key)didn't work (if i stop haldaemon before
startx, it works OK). Then I read some documentation about haldaemon
and try to solve the problem, but when I tried to do something, I
found my system doesn't have a
"/org/freedesktop/Hal/devices/computer:system.hardware.vendor"
property in hal-device-manager (and also doesn't have
hardware.product), therefore the matching in xxxx-keymap-xxxx.fdi
doesn't work. It seems few people met the same problem, I searched
among google and found no useful information.

The version I using is:
hal-0.5.10,
hal-info-20071212,
dbus-1.1.2

So I need some advice.