[sane-devel] Question SANE and Canon Scanner

[m. allan noah]

"Unable to open device: Device busy"

do you have something else installed that is talking to the scanner?
like canon's scangear software, or a VM running another OS?

allan

On Tue, Aug 25, 2020 at 5:28 AM <2bfrank at posteo.de> wrote:
>
> Dear SANE team,
>
> thanks for a great FOSS project ! Can I bother you with a question, you
> are my last resort, I tried various forums;
> regarding the Cannon  LiDE 300 Scanner. I bought it because it is listed
> as "completely supported" in the SANE list
> (http://www.sane-project.org/sane-mfgs.html#Z-CANON),
> but I can't get it to work. Here's what I tried:
>
> I am on Linux Mint 20 (Ubuntu 20.04 base), and the scanner is
> recognised:
>
> lsusb
> Bus 003 Device 004: ID 04a9:1913 Canon, Inc. LiDE 300
>
> scanimage -L
> device `pixma:04A91913' is a CANON CanoScan LiDE 300 multi-function
> peripheral
>
> sane-find-scanner
> found USB scanner (vendor=0x04a9 [Canon], product=0x1913 [LiDE 300]) at
> libusb:001:004
>
> I found out that it works with sane-pixma,  provided by
> libsane-common_1.0.22-7ubuntu1_amd64 bug
> I have 1.0.29 installed, so it should be OK too? According to
> https://packages.debian.org/buster/amd64/libsane-dev/filelist
> it is provided by the libsane-dev package, so I tried
>
> sudo apt install libsane-dev
> still no result...
>
> simple scan output:
>
> simple-scan -d (debug mode)
> +9,45s] DEBUG: scanner.vala:341: sane_get_devices () -> SANE_STATUS_GOOD
> [+9,45s] DEBUG: scanner.vala:353: Device: name="pixma:04A91913"
> vendor="CANON" model="CanoScan LiDE 300" type="multi-function
> peripheral"
> [+9,45s] DEBUG: scanner.vala:353: Device:
> name="escl:http://127.0.0.1:60000" vendor="ESCL" model="LiDE 300 HTTP"
> type="flatbed scanner"
> [+13,68s] DEBUG: simple-scan.vala:455: Requesting scan at 300 dpi from
> device 'pixma:04A91913'
> [+13,68s] DEBUG: scanner.vala:1676: Scanner.scan ("pixma:04A91913",
> dpi=300, scan_mode=ScanMode.COLOR, depth=8, type=single, paper_width=0,
> paper_height=0, brightness=0, contrast=0, delay=3000ms)
> [+13,68s] DEBUG: scanner.vala:828: Processing request
> [+14,20s] DEBUG: scanner.vala:889: sane_open ("pixma:04A91913") ->
> SANE_STATUS_DEVICE_BUSY
> [+14,20s] WARNING: scanner.vala:893: Unable to open device: Device busy
>
> XSane says the same thing. Unable to open device: Device busy
>
> here's what dmesg said:
>
> dmesg
> 41353.742838] usb 1-3: new high-speed USB device number 5 using xhci_hcd
> [41353.804289] usb 1-3: New USB device found, idVendor=04a9,
> idProduct=1913, bcdDevice= 1.00
> [41353.804292] usb 1-3: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [41353.804295] usb 1-3: Product: LiDE 300
> [41353.804297] usb 1-3: Manufacturer: Canon
> [41353.804298] usb 1-3: SerialNumber: 486D04
> [41353.864304] usb 1-3: usbfs: process 20985 (ippusbxd) did not claim
> interface 0 before use
> [41353.906525] audit: type=1400 audit(1598002277.392:90):
> apparmor="DENIED" operation="open" profile="ippusbxd"
> name="/etc/nsswitch.conf" pid=21004 comm="ippusbxd" requested_mask="r"
> denied_mask="r" fsuid=0 ouid=0
>
> I found in a forum that ippusbxd might be the problem, removed the
> package, but no result.
>
> I also manually added line in file /etc/sane.d/genesys.conf and
>   /etc/sane.d/canon.conf
> # Canon LIDE 300
> usb 0x04a9 0x1913
>
> as well as in
> /lib/udev/rules.d/60-libsane.rules
> # Canon LIDE
> ATTRS{type}=="3", ATTRS{vendor}=="04a9", ATTRS{model}=="1913",
> ENV{libsane_matched}="yes"
>
> -------------
> I'm really sorry to use you as a hotline, but if there are any ideas, I
> would be grateful;
> All the Best
> Frank
>


-- 
"well, I stand up next to a mountain- and I chop it down with the edge
of my hand"