"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 <2bfr...@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"