I've just been testing this and it seems that sane / driver doesn't check for the end of track correctly when returning the scanner element to the start of the track after a scan.
This means that the scanner element gets rammed into the start of the track and you can hear the motor screaming in pain as it tries to push against an immovable object. If you listen you will hear a high pitched humming noise at this point as the scanner desperately tries to move the optical sensor (scanner element) I presume this triggers some sort of fail safe / over current protection which kills the scanner motor and resets the scanner. Effectively causing the behaviour everyone is observing. This has the potential to break the motor and scanner. On windows with MP_Navigator EX4.0 (Canon's Software) this does not happen. -- 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/1184699 Title: Canon LIDE 110 can only scan once, then I need to replug the usb cable Status in sane-backends package in Ubuntu: Confirmed Bug description: I have a Canon LIDE 110 scanner which works by default on ubuntu 13.04. The problem is after first scan, I can not scan for second time. I need to reconnect the USB cable to use the scanner again. # TEST 1 : without reconnecting the usb cable francois@pc:~$ scanimage -v > test1.jpg # success scanimage: scanning image of size 636x885 pixels at 8 bits/pixel scanimage: acquiring gray frame scanimage: min/max graylevel value = 0/255 scanimage: read 562860 bytes in total # I don't unplug plug the usb cable. francois@pc:~$ scanimage -v > test2.jpg # FAIL scanimage: no SANE devices found # TEST 2 : reconnect usb cable between scan attempts francois@pc:~$ scanimage -v > test1.jpg # success scanimage: scanning image of size 636x885 pixels at 8 bits/pixel scanimage: acquiring gray frame scanimage: min/max graylevel value = 0/255 scanimage: read 562860 bytes in total # I unplug and replug the usb cable. francois@pc:~$ scanimage -v > test2.jpg # SUCCESS scanimage: scanning image of size 636x885 pixels at 8 bits/pixel scanimage: acquiring gray frame scanimage: min/max graylevel value = 0/255 scanimage: read 562860 bytes in total francois@pc:~$ dmesg # extract [ 829.365158] usb 3-1: USB disconnect, device number 2 [ 834.935000] usb 3-1: new high-speed USB device number 4 using xhci_hcd [ 834.952515] usb 3-1: New USB device found, idVendor=04a9, idProduct=1909 [ 834.952519] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 834.952522] usb 3-1: Product: CanoScan [ 834.952524] usb 3-1: Manufacturer: Canon [ 1623.738811] usb 3-1: USB disconnect, device number 4 [ 1623.739072] xhci_hcd 0000:00:14.0: Slot 3 endpoint 6 not removed from BW list! [ 1625.528827] usb 3-1: new high-speed USB device number 5 using xhci_hcd [ 1625.546327] usb 3-1: New USB device found, idVendor=04a9, idProduct=1909 [ 1625.546331] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 1625.546334] usb 3-1: Product: CanoScan [ 1625.546336] usb 3-1: Manufacturer: Canon francois@pc:~$ uname -a && cat /etc/issue Linux pc 3.8.0-22-generic #33-Ubuntu SMP Thu May 16 15:17:14 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Ubuntu 13.04 \n \l The problem was reported here by someone else : http://askubuntu.com/questions/278473/canon-lide-110-should-reconnect- usb-for-each-scan Thanks François To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1184699/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
