Jared D. McNeill a écrit :

> It's stuck in the video BIOS; please try setting the 
> machdep.acpi_vbios_reset sysctl to 0 before going to sleep.

Your hack works: it doesn't beep anymore on wakeup. But, funnier in a 
sense, nothing happens. When I enter sleep state 3, the power LED blinks 
(so does the LED of my WLAN PC-Card) which is good; when I push the 
power button to recover from sleep, the laptop… merely shuts down. I've 
not found any alternative key combination or other trick to wake it up.

Vincent