Yes I tried switching off the recirc fan, the hyd pumps, the bleed, the pack.... uselessy.
The engineer I talked to after the flight excluded a bearing problem in the N1 shaft...
My bet was a loose fairing, but....
Nobody seems to have a definite answer.
I think an engine bearing would disintegrate before producing such an awful noise, and anyway the noise seems to be generated int he wall itself, close to your left foot if you sit there, as I did...
I hope somebody will tell me when and if they solve the problem... Thanks everybody