jfbus, thank you for reporting this and helping make Ubuntu better.
1) Did this issue start happening after an update, or has it always not worked
with Simple Scan?
2) Is the problem reproducible when connecting to the scanner via WiFi and USB?
3) To see if this is already resolved in Ubuntu, could you please test
http://cdimage.ubuntu.com/daily-live/current/ and advise to the results?
** Changed in: sane-backends (Ubuntu)
Importance: Undecided => Low
** Changed in: sane-backends (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1673864
Title:
simple-scan not working with canon pixma mx475 / sane problems
Status in sane-backends package in Ubuntu:
Incomplete
Bug description:
simple-scan does not work with the Canon Pixma MX475 network scanner.
When running with debug output (simple-scan -d), I get the following error:
[+0,00s] DEBUG: simple-scan.vala:674: Starting Simple Scan 3.20.0, PID=14847
[+0,00s] DEBUG: Connecting to session manager
[+0,09s] DEBUG: ui.vala:2032: Loading state from
/home/xx/.cache/simple-scan/state
[+0,09s] DEBUG: ui.vala:1995: Restoring window to 600x400 pixels
[+0,09s] DEBUG: ui.vala:1999: Restoring window to maximized
[+0,09s] DEBUG: autosave-manager.vala:64: Loading autosave information
[+0,09s] DEBUG: autosave-manager.vala:259: Waiting to autosave...
[+0,09s] CRITICAL: gtk_event_controller_reset: assertion
'GTK_IS_EVENT_CONTROLLER (controller)' failed
[+0,14s] DEBUG: scanner.vala:1447: sane_init () -> SANE_STATUS_GOOD
[+0,14s] DEBUG: scanner.vala:1453: SANE version 1.0.25
[+0,14s] DEBUG: scanner.vala:1514: Requesting redetection of scan devices
[+0,14s] DEBUG: scanner.vala:803: Processing request
[+0,22s] DEBUG: autosave-manager.vala:281: Autosaving book information
[+0,24s] DEBUG: ui.vala:2124: Saving state to
/home/xx/.cache/simple-scan/state
[+2,50s] DEBUG: simple-scan.vala:404: Requesting scan at 150 dpi from device
'(null)'
[+2,50s] DEBUG: scanner.vala:1560: Scanner.scan ("(null)", dpi=150,
scan_mode=ScanMode.GRAY, depth=2, type=ScanType.SINGLE, paper_width=0,
paper_height=0, brightness=0, contrast=0)
[+5,61s] DEBUG: scanner.vala:338: sane_get_devices () -> SANE_STATUS_GOOD
[+5,61s] DEBUG: scanner.vala:350: Device: name="pixma:MX470_192.168.1.107"
vendor="CANON" model="Canon PIXMA MX470 Series" type="multi-function peripheral"
[+5,61s] DEBUG: scanner.vala:803: Processing request
[+6,47s] DEBUG: scanner.vala:864: sane_open ("pixma:MX470_192.168.1.107") ->
SANE_STATUS_INVAL
[+6,47s] WARNING: scanner.vala:868: Unable to get open device: Invalid
argument
[+6,57s] DEBUG: ui.vala:2124: Saving state to
/home/xx/.cache/simple-scan/state
WORKAROUND: Use Canon's ScanGear MP software.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libsane 1.0.25+git20150528-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-66.87-generic 4.4.44
Uname: Linux 4.4.0-66-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Mar 17 20:18:54 2017
SourcePackage: sane-backends
UpgradeStatus: No upgrade log present (probably fresh install)
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