Hi Wilhelm, Wilhelm <wilhelm.meier at fh-kl.de> wrote:: >> I am trying to get an Canon Pixma MP280 to scan an image. I am using the >> sane-backends-1.0.23, >> (packaged for Ubuntu from >> https://launchpad.net/~nathan-renniewaldock/+archive/sane) on Ubuntu 12.04. >> The scanner is detected without a problem, but if I try to scan an >> image, scanimage returns "Error during device I/O". Before this error >> occurs, I can hear that the scanner is moving its head shortly. Despite >> the error being "ETIMEDOUT", scanimage does not run for a long time; and >> most of that time is spent in device discovery. > > please check if your usb interface stays on status power/control=on. > If it is on power/control=auto (usb autosuspend) some usb-scanners > have problems.
This seems to be ok: $ cd /sys/bus/usb/devices/6-1 $ cat manufacturer product power/control Canon MP280 series on > On ubuntu 12.04 there seems to be a problem with udev rules: make a > test moving /lib/udev/rules.d/40-libsane.rules to > ../99-libsane.rules. Don't forget udevadm control --reload-rules and > replug the scanner. If I do this, scanimage does not detect the scanner anymore: $ scanimage -L No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages). $ sane-find-scanner # sane-find-scanner will now attempt to detect your scanner. If the # result is different from what you expected, first make sure your # scanner is powered up and properly connected to your computer. # No SCSI scanners found. If you expected something different, make sure that # you have loaded a kernel SCSI driver for your SCSI adapter. could not open USB device 0x1d6b/0x0002 at 001:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0002 at 002:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0001 at 003:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0001 at 004:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0001 at 005:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0001 at 006:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0001 at 007:001: Access denied (insufficient permissions) could not open USB device 0x1d6b/0x0001 at 008:001: Access denied (insufficient permissions) could not open USB device 0x05c6/0x9204 at 001:003: Access denied (insufficient permissions) could not open USB device 0x04f2/0xb1b4 at 002:003: Access denied (insufficient permissions) could not open USB device 0x0a5c/0x217f at 008:002: Access denied (insufficient permissions) could not open USB device 0x04a9/0x1746 at 006:012: Access denied (insufficient permissions) # No USB scanners found. If you expected something different, make sure that # you have loaded a kernel driver for your USB host controller and have setup # the USB system correctly. See man sane-usb for details. # Not checking for parallel port scanners. # Most Scanners connected to the parallel port or other proprietary ports # can't be detected by this program. # You may want to run this program as root to find all devices. Once you # found the scanner devices, be sure to adjust access permissions as # necessary.
