Ok, I think this might do it.
A codec dump for acer 6920g -
00:1b.0 0403: 8086:284b (rev 03)
and has the same DeviceID / sybsystem as me.
Mormegil, up for some more of your black magic?
And if you show me how, I'll be glad to take it from there... but this one HAS to work damn it ! The specs are almost identical to my model !!