This should work for permanent settings: sudo echo "options usbcore autosuspend=-1" > /etc/modprobe.d/usb_suspend after this us should reboot.
this is for temporary: sudo su echo "-1" > /sys/module/usbcore/parameters/autosuspend after this you need replug you scanner. -1 mean - disable autosuspend 2 mean - enable autosuspend with delay 2 seconds -- some usb_devices fault if usb_suspend enabled https://bugs.launchpad.net/bugs/85488 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs