[linux] Scanproblemen Canon Pixma G3501 & *Ubuntu 18.04 LTS.

[Bas G. Roufs]

Beste Julien en allemaal.

Vanwege familie-omstandigheden kom ik pas nu weer toe aan het 
scannerprobleem. @ Julien en anderen - dank voor het meedenken tot nu toe.

Op de help-pagina voor sane (https://wiki.debian.org/SaneOverNetwork)
>
>     staat o.a.:
>     To run as the saned user either become root with su and do
>
>     su -s /bin/bash saned
>     sane-find-scanner
>     scanimage -L
>
>     or use sudo:
>
>     sudo-u saned sane-find-scanner
>     sudo-u saned scanimage -L
>
>     Had je die commando's uitgevoerd, en wat voor output kreeg je daaruit?
>
Heb "jouw" tests uitgevoerd, @ Julien. Ik ben een stukje verder gekomen 
- zie het uitgebreide terminalrapport hieronder. Het verhaal komt neer 
op het volgende. Saned "ziet" mijn scanner. Maar vanwege 
permissieproblemen kan ik er nu niet bij. De vraag is dus nu: hoe kan ik 
die permissieproblemen oplossen?

Tot zover. HG,
Bas G. Roufs.



bas op Viaconsensus-iter:~$ su
Password:
root op Viaconsensus-iter:/home/bas# su -s /bin/bash saned
saned op Viaconsensus-iter:/home/bas$ sane-find-scanner

   # sane-find-scanner will now attempt to detect your scanner. If the
   # result is different from what you expected, first make sure your
   # scanner is powered up and properly connected to your computer.

   # No SCSI scanners found. If you expected something different, make 
sure that
   # you have loaded a kernel SCSI driver for your SCSI adapter.

could not open USB device 0x8087/0x0024 at 002:002: Access denied 
(insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 002:001: Access denied 
(insufficient permissions)
could not open USB device 0x04f2/0xb217 at 001:005: Access denied 
(insufficient permissions)
could not open USB device 0x0a5c/0x217f at 001:004: Access denied 
(insufficient permissions)
found USB scanner (vendor=0x04a9 [Canon], product=0x1794 [G3000 series]) 
at libusb:001:008
could not open USB device 0x0424/0x2514 at 001:003: Access denied 
(insufficient permissions)
could not open USB device 0x8087/0x0024 at 001:002: Access denied 
(insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 001:001: Access denied 
(insufficient permissions)
   # Your USB scanner was (probably) detected. It may or may not be 
supported by
   # SANE. Try scanimage -L and read the backend's manpage.

   # Not checking for parallel port scanners.

   # Most Scanners connected to the parallel port or other proprietary ports
   # can't be detected by this program.

   # You may want to run this program as root to find all devices. Once you
   # found the scanner devices, be sure to adjust access permissions as
   # necessary.
saned op Viaconsensus-iter:/home/bas$ scanimage -L
device `pixma:G3000_192.168.2.12' is a CANON Canon PIXMA G4000 Series 
multi-function peripheral
saned op Viaconsensus-iter:/home/bas$