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[David Newman <313504@xxxxxxxxxxxxxxxxxx>]

The problem has reappeared in the latest three Ubuntu kernels, including
3.16.0-31-generic. I can no longer scan.

There seems to have been a change that meant the system started to
recognise the card reader in my Canon MP550 printer, so I get messages
like:

[  386.757298] usb 2-1.5: SerialNumber: 14E912
[  386.759466] usb-storage 2-1.5:1.2: USB Mass Storage device detected
[  386.760192] scsi17 : usb-storage 2-1.5:1.2
[  386.790059] WARNING! power/level is deprecated; use power/control instead
[  387.774767] scsi 17:0:0:0: Direct-Access     Canon    MP550 series     0104 PQ: 0 ANSI: 2
[  387.775169] sd 17:0:0:0: Attached scsi generic sg10 type 0
[  387.779965] sd 17:0:0:0: [sdi] Attached SCSI removable disk
[  413.540101] usb 2-1.5: usbfs: interface 2 claimed by usb-storage while 'KSaneIface::Fin' sets config #1
[  417.598741] usb 2-1.5: usbfs: interface 2 claimed by usb-storage while 'skanlite' sets config #1
[  418.123578] usb 2-1.5: usbfs: interface 2 claimed by usb-storage while 'skanlite' sets config #1

I blacklisted usblp, as CUPS no longer needs it, so I can print. But
when I tried to blacklist usb-storage, it was ignored.

In any case, I do use other usb-storage devices.

Is there a way to tell Ubuntu to ignore the card slot inside the
printer, so not use usb-storage?

-- 
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Packages, which is subscribed to sane-backends in Ubuntu.
https://bugs.launchpad.net/bugs/313504

Title:
  Scanimage/usbfs device IO error with Canon MP700 scanner

Status in sane-backends package in Ubuntu:
  Confirmed

Bug description:
  Scanimage fails:

  $ scanimage 
  P6
  # SANE data follows
  638 877
  255
  scanimage: sane_read: Error during device I/O

  In dmesg:
  [22955.082523] usb 1-1.2: usbfs: interface 0 claimed by usblp while 'scanimage' sets config #1
  [22956.440402] usb 1-1.2: usbfs: interface 0 claimed by usblp while 'scanimage' sets config #1
  [22956.442197] usb 1-1.2: usbfs: interface 0 claimed by usblp while 'scanimage' sets config #1
  [22956.656083] usb 1-1.2: usbfs: process 13214 (scanimage) did not claim interface 0 before use
  [22956.657216] usb 1-1.2: usbfs: process 13214 (scanimage) did not claim interface 0 before use

  
  Ubuntu: 8.10
  libsane: 1.0.19-6ubuntu1
  sane-utils: 1.0.19-6ubuntu1
  xsane: 0.995-3ubuntu2

  $ scanimage -L & lsusb 
  Bus 002 Device 002: ID 04d9:a015 Holtek Semiconductor, Inc. 
  Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Bus 001 Device 006: ID 04a9:2630 Canon, Inc. MultiPASS MP700
  Bus 001 Device 005: ID 05a9:a518 OmniVision Technologies, Inc. D-Link DSB-C310 WebCam
  Bus 001 Device 004: ID 07b8:e004 D-Link Corp. Mass Storage Device
  Bus 001 Device 002: ID 0409:0058 NEC Corp. HighSpeed Hub
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  device `pixma:04A92630_00000001D372' is a CANON Canon MultiPASS MP700 multi-function peripheral

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