desktop-packages team mailing list archive

[Michael <1184699@xxxxxxxxxxxxxxxxxx>]

Here is a patch against Wily containing upstream commits 09daef4 and
425edc7, which fix the issue for me and Freudi74.  I don't have a chance
to test this properly just now.  If anyone else does, please do (see the
Ubuntu process<1>, as pointed out to me on #ubuntu-bugs).

<1> https://wiki.ubuntu.com/SponsorshipProcess

** Attachment added: "This patch should fix the problems described in this ticket for at least two users."
   https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/1184699/+attachment/4450188/+files/timing_issue_fixes

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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:
  New
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

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