Hello List, By default CONFIG_USB_SUSPEND is not enabled and today I got bite by this when I got a new WDC My Book hard drive. I have no way to unplug it safely, according to it's manual, with a kernel that doesn't have CONFIG_USB_SUSPEND=y. On it's manual read "you should unplug and remove the device only when the light is off." On Linux unmounting it won't turn it's light off and I can feel it's motor is still running. The only way to unplug it properly on a Linux system, as to my knowledge, is to echo `suspend' to `/sys/bus/usb/devices/$DEV/power/level'. And one has to have CONFIG_USB_SUSPEND=y to do this. On Windows and Mac OS, `safely remove this device' function effectly turns it into `suspend' mode, and it's light off. I'm new in this field and I understood people's concern on enabling autosuspend. As to my understanding, `enabling suspend' and `enabling autosuspend' should be controlled by two different knobs. I did a quick search in LKML and haven't found specific oppose to enable USB suspend by default, and Debian has started shipping a kernel with it turned on since 2.6.26. Perhaps we should consider turning it on by default? Thanks! -- Li, Yan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
