Hello. I have usb modem based on new Qualcomm cpu - qsc6085 (i can't find any datasheet). This device support autosuspend and everytime go to sleep after 20 minutes of inactivity. After that i can't resume it. pppd only say that "no carrier". Now, only unplug and plug device again... lsusb say: Bus 001 Device 085: ID 19d2:fff1 ONDA Communication S.p.A. Modem has 5 ports: ttyUSB0, ttyUSB1, ttyUSB2, ttyUSB3, ttyUSB4. I go to sysfs and try to disable autosuspend: /sys/bus/usb/devices # ls 1-0:1.0 1-1:1.0 1-1.5:1.0 1-1.5:1.2 1-1.5:1.4 2-0:1.0 2-1.1 2-1.1:1.0 2-1.7 2-1.8 usb1 1-1 1-1.5 1-1.5:1.1 1-1.5:1.3 1-1.5:1.5 2-1 2-1:1.0 2-1.1:1.1 2-1.7:1.0 2-1.8:1.0 usb2 Our device is 1-1.5:1.0 - 1-1.5:1.4 # ls 1-1.5:1.0 bAlternateSetting bInterfaceProtocol driver ep_82 power ttyUSB0 bInterfaceClass bInterfaceSubClass ep_02 interface subsystem uevent bInterfaceNumber bNumEndpoints ep_81modalias supports_autosuspend # cat supports_autosuspend 1 # ls power/ control runtime_active_time runtime_status runtime_suspended_time wakeup # cat runtime_status active #cat control # cat runtime_active_time 864568 This value is growing up. What strange - runtime_status is everytime "active", even if device is sleeps. I try (device is still alive) for every 1-1.5:1.X: # echo "on" > ./control # cat control on Looks like everything OK. Waiting... And evice is suspended... This is a problem on device driver (because closed chip) or hardware problem ? Thanks -- 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
