[ubuntu] Sony VAIO Hotkeys

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http://ubuntuforums.org – Hello everyone, I need some help in order to make my Sony VGN-A617B laptop's Hotkeys working. There are 3 useful keys (mute, volume up, volume down) that I would like to use but they don't seem to be recognized. They seem to be an ACPI device but when I do acpi_listen, only the mute button appears. Problem 1: do you know why the other keys don't seem to be recognized? What can I do to fix that? The mute button events are caught by the kernel but when I do xev, there is nothing when I press the mute button. So I tried to manually trigger an event with acpid through acpi_fakekey (my script exe (Hardware)