The problem can be fixed by manually disabling USB autosuspend for the scanner by doing
echo -1 >/sys/bus/usb/devices/USB_ADDRESS_OF_SCANNER/power/autosuspend as root. I guess an udev rule has to be added for that. However, the scanner would then power on while plugged all the time. So I guess it would be better if the sane backend would keep the device open until the scanner slit is retracted to it's home position, and then close it, allowing autosuspend power off the device. On the proprietary windows driver, the scanner is kept alive for some minutes until it is shut down. This is meant to keep the lamp warm which needs to be preheated after power off I guess. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1532582 Title: Regression: SnapScan 1212U stuck after scanning one page To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1532582/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
