Hi Oliver, it does not go into suspend mode with this patch. I think it should switch after 2 seconds of inactivity, but it doesn't - even when disconnected from PPP. The value in active_duration is still counting. root@meda:~# cat /sys/bus/usb/devices/2-2/power/autosuspend 2 root@meda:~# cat /sys/bus/usb/devices/2-2/power/control auto root@meda:~# grep USB_SUSPEND /boot/config-3.0.0-rc6 CONFIG_USB_SUSPEND=y Feel free to send another patches and I will test them. Best regards Michal 2011/7/13 Oliver Neukum <oliver@xxxxxxxxxx>: > Am Mittwoch, 13. Juli 2011, 16:02:17 schrieb Michal Hybner: >> Hi Oliver, >> yes, I will have time to test at Saturday. But I have a few questions >> - how can I measure, that it has reduced power consumption? Or should >> I only test if connection works properly with this patch? And it is >> really possible that it can consume less power even if it's not USB >> dogle (like most 3G modems), but powered-on with separate AC adapter? > > You can see whether the device is suspended by looking at its power > attributes, like: > > cat /sys/bus/usb/devices/**your device here**/power/active_duration > If that numbers stops growing, your device is in power save mode. > > Regards > Oliver > -- 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
