Martin, it might be good to wait for more feedback before closing this. I suspect that different people may be seeing different issues, and that some might still have problems. And in defence of upstream, a short sleep does seem reasonable to me when dealing with timing issues in black box external hardware. You never know what is going in inside of it, and it could well just be that the designers never anticipated that it would have to cope with communication at the speed USB 3 allows for.
-- 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 Simple Scan: Invalid Status in sane-backends package in Ubuntu: Fix Committed 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/simple-scan/+bug/1184699/+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
