Dear all! I submit you this issue with my laptop, a Packard Bell Easynote R1983 W (running an updated Kubuntu 7.04, with updated BIOS). Issue not documented elsewhere I've looked for. Problem: I need to put at boot the option "acpi=force" to kernel (2.6.20-16) in order to have atheros wifi card working. But then, this disables my usb devices! More technical details have been posted on: kubuntuforums.net/forums/index.php?topic=3083009.msg68885#msg68885 Some comments made on http://madwifi.org/ticket/1454 "This is an ACPI error. [...] However, the problem in this case looks like a badly written DSDT. [...] the problem is the fault of your system vendor." (I first thought it was a madwifi issue) Please help, or at least give some hint that allow me to go on (I'm newbie)! Thanks in advance. Raf - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html