I've got Canon CanoScan LIDE 25 scanner that stopped working following Ubuntu 14.04 upgrade. The scanner is recognized by system (kernel and sane-find-scanner) and shows up it Simple Scan options dialogue. Yet the scan action fails with the scanner not powering itself up and not doing anything.
syslog: [ 5717.924791] usb 3-2: USB disconnect, device number 3 [ 5725.935931] usb 3-2: new full-speed USB device number 4 using xhci_hcd [ 5725.953233] usb 3-2: New USB device found, idVendor=04a9, idProduct=2220 [ 5725.953244] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 5725.953250] usb 3-2: Product: CanoScan [ 5725.953256] usb 3-2: Manufacturer: Canon sane-find-scanner output: found USB scanner (vendor=0x04a9 [Canon], product=0x2220 [CanoScan]) at libusb:003:004 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to sane-backends in Ubuntu. https://bugs.launchpad.net/bugs/1312594 Title: 14.04 won't detect common USB scanner Status in “sane-backends” package in Ubuntu: Confirmed Bug description: My multifunction Samsung SCX3200 printer is not detected by sane, but printing is fine. This scanner is faily generic and supported out of the box by the Xerox MFP driver (sane default). Printer/scanner as seen by the kernel, device 007 : ID 04e8:3441 -------------------------------------------------------------------------------------------- $ lsusb Bus 002 Device 003: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications Processor Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 046d:c50e Logitech, Inc. Cordless Mouse Receiver Bus 003 Device 007: ID 04e8:3441 Samsung Electronics Co., Ltd Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub -------------------------------------------------------------------------------------------- The IDs are properly set in udev and sane.d configuration: -------------------------------------------------------------------------------------------- $ cat /lib/udev/rules.d/40-libsane.rules | grep 3441 ATTRS{idVendor}=="04e8", ATTRS{idProduct}=="3441", ENV{libsane_matched}="yes" $ cat /etc/sane.d/xerox_mfp.conf | grep 3441 usb 0x04e8 0x3441 -------------------------------------------------------------------------------------------- Problem: sane-find-scanner can't find the scanner: -------------------------------------------------------------------------------------------- $ sudo sane-find-scanner -q $ (no output) $ sudo 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). $ -------------------------------------------------------------------------------------------- The kernel module is properly loaded when the printer is connected, no blacklisting : -------------------------------------------------------------------------------------------- $ sudo lsmod | grep usblp usblp 22891 0 $ modinfo usblp filename: /lib/modules/3.13.0-24-generic/kernel/drivers/usb/class/usblp.ko license: GPL description: USB Printer Device Class driver author: Michael Gee, Pavel Machek, Vojtech Pavlik, Randy Dunlap, Pete Zaitcev, David Paschal srcversion: BD8A318D5C286F1E78768B9 alias: usb:v04B8p0202d*dc*dsc*dp*ic*isc*ip*in* alias: usb:v*p*d*dc*dsc*dp*ic07isc01ip03in* alias: usb:v*p*d*dc*dsc*dp*ic07isc01ip02in* alias: usb:v*p*d*dc*dsc*dp*ic07isc01ip01in* alias: usb:v*p*d*dc07dsc01dp03ic*isc*ip*in* alias: usb:v*p*d*dc07dsc01dp02ic*isc*ip*in* alias: usb:v*p*d*dc07dsc01dp01ic*isc*ip*in* depends: intree: Y vermagic: 3.13.0-24-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 00:A5:A6:57:59:DE:47:4B:C5:C4:31:20:88:0C:1B:94:A5:39:F4:31 sig_hashalgo: sha512 parm: proto_bias:Favourite protocol number (int) -------------------------------------------------------------------------------------------- Simple-scan will just show a "Unable to start scan" error. Also tried: - Running simple-scan and xscan as root - Adding myself to lp, saned and scanner groups, then log off + log on - Power cyling the printer, disconnected and plugged back in - Switching USB port (USB2 <-> USB3) - Restarting the udev service This scanner is faily generic and is supposed to be working OOTB since 12.04: http://askubuntu.com/questions/88700/how-do-i-get-a-samsung-scx3200-multifunction-printer-scanner-working http://ubuntuforums.org/showthread.php?t=1857478 I think this may be a bug with libsane. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1312594/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp