I add that when I press Fn+F8 in linux-image-2.6.31-21-generic after gdm has started, nothing happens but a new line is written to dmesg:
dell-wmi: Unknown key 42 pressed
Moreover I'm not sure that the time when it stops working is exactly when gdm starts, it could very well be sometime during bootup before gdm.
I add that when I press Fn+F8 in linux-image- 2.6.31- 21-generic after gdm has started, nothing happens but a new line is written to dmesg:
dell-wmi: Unknown key 42 pressed
Moreover I'm not sure that the time when it stops working is exactly when gdm starts, it could very well be sometime during bootup before gdm.