I'm having a similar problem. I have an old 32-bit Debian laptop on
which my scanner is working fine, and a new 64-bit Ubuntu 14.04 laptop
on which the scanner is not working. The scanner is connected via USB
cable. It is part of a Brother DCP-8155DN (multifunction black and
white laser printer, copier, and scanner). The copier is working, and
the printer part is working with CUPS just fine as far as I can tell.
The scanner seems to be detected, but then gscan2pdf and Simple Scan
give errors, and sane-find-scanner can not find it. Scanimage sees it
but cannot produce an output image. I tried these as root and not
root.
I have sane 1.0.14-9 and sane-utils 1.0.23-3. The kernel is Linux
version 3.13.0-32-generic.
lsusb:
Bus 003 Device 006: ID 04f9:0293 Brother Industries, Ltd
grep bro /etc/sane.d/dll.conf
brother4
locate libsane | grep rules
/etc/udev/rules.d/40-brother-libsane-type1.rules
/lib/udev/rules.d/40-libsane.rules
grep 0293 /lib/udev/rules.d/40-libsane.rules
ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="0293",
ENV{libsane_matched}="yes"
scanimage -L
device `brother4:bus2;dev1' is a Brother DCP-8155DN USB scanner
sudo scanimage -T
scanimage: rounded value of br-x from 215.9 to 215.88
scanimage: rounded value of br-y from 355.6 to 355.567
scanimage: sane_start: Invalid argument
sudo sane-find-scanner
# No USB scanners found. If you expected something different, make sure that
# you have loaded a kernel driver for your USB host controller and have setup
# the USB system correctly. See man sane-usb for details.
When I ran gscan2pdf as root from the command line, it gave a command
line error:
ERROR - opening device 'brother4:bus2;dev1': Invalid argument
*************************************************************************************
sudo SANE_DEBUG_SANEI_USB=255 sane-find-scanner
[sanei_debug] Setting debug level of sanei_usb to 255.
[sanei_usb] sanei_usb_init: marking existing devices
[sanei_usb] sanei_usb_init: Looking for kernel scanner devices
[sanei_usb] sanei_usb_init: initializing libusb-1.0
[sanei_usb] sanei_usb_init: Looking for libusb-1.0 devices
...
[sanei_usb] sanei_usb_init: device 0x04f9/0x0293, interface 0 doesn't look like
a scan
ner (0/7)
[sanei_usb] sanei_usb_init: found libusb-1.0 device (0x04f9/0x0293) interface 1
at lib
usb:003:006
[sanei_usb] store_device: add dn 0 with libusb:003:006
[sanei_usb] sanei_usb_init: found 1 devices
[sanei_usb] sanei_usb_init: device 00 is libusb:003:006
[sanei_usb] sanei_usb_open: trying to open device `/dev/usb/scanner'
[sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner' in list
...
[sanei_usb] sanei_usb_open: trying to open device `/dev/usbscanner'
[sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner' in list
...
# No USB scanners found. If you expected something different, make sure that
# you have loaded a kernel driver for your USB host controller and have setup
# the USB system correctly. See man sane-usb for details.
******************************************************************************
sudo SANE_DEBUG_SANEI_USB=255 scanimage -T
[sanei_debug] Setting debug level of sanei_usb to 255.
[sanei_usb] sanei_usb_init: marking existing devices
[sanei_usb] sanei_usb_init: Looking for kernel scanner devices
[sanei_usb] sanei_usb_init: initializing libusb-1.0
[sanei_usb] sanei_usb_init: Looking for libusb-1.0 devices
...
[sanei_usb] sanei_usb_init: device 0x04f9/0x0293, interface 0 doesn't look like
a scanner (0/7)
[sanei_usb] sanei_usb_init: found libusb-1.0 device (0x04f9/0x0293) interface 1
at libusb:003:006
[sanei_usb] store_device: add dn 0 with libusb:003:006 (*** some paragraphs in
the output have this line ***)
[sanei_usb] store_device: not storing device libusb:003:006 (*** alternate
paragraphs in the output have this line ***)
...
[sanei_usb] sanei_usb_init: found 1 devices
[sanei_usb] sanei_usb_init: device 00 is libusb:003:006
...
[sanei_usb] sanei_usb_open: trying to open device `/dev/usbscanner'
[sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner' in list
...
scanimage: rounded value of br-x from 215.9 to 215.88
scanimage: rounded value of br-y from 355.6 to 355.567
scanimage: sane_start: Invalid argument
*************************************************************************
/etc/udev/rules.d/40-brother-libsane-type1.rules:
ACTION!="add", GOTO="brother_mfp_end"
SUBSYSTEM=="usb", GOTO="brother_mfp_udev_1"
SUBSYSTEM!="usb_device", GOTO="brother_mfp_end"
LABEL="brother_mfp_udev_1"
SYSFS{idVendor}=="04f9", GOTO="brother_mfp_udev_2"
ATTRS{idVendor}=="04f9", GOTO="brother_mfp_udev_2"
GOTO="brother_mfp_end"
LABEL="brother_mfp_udev_2"
ATTRS{bInterfaceClass}!="0ff", GOTO="brother_mfp_end"
ATTRS{bInterfaceSubClass}!="0ff", GOTO="brother_mfp_end"
ATTRS{bInterfaceProtocol}!="0ff", GOTO="brother_mfp_end"
ENV{libsane_matched}="yes"
LABEL="brother_mfp_end"
Here's a link that has some source code that has to do with this, not
sure it's the version I have:
http://sane-
backends.sourcearchive.com/documentation/1.0.19-19/sanei__usb_8h_7e7a35cd2d6c02d93dbf9addbdf06452.html
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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.
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