[sane-devel] Using "scanimage" under Gentoo

[Dr Rainer Woitok]

Bruce and All,

On Thursday, 2019-12-12 23:44:38 +1000, Bruce Schultz wrote:

> ...
> Rainer can you try now with the sane-backends-9999.ebuild, which will 
> install the current git version of the backends. I'm hopeful that having 
> something at least as recent as the known working version may work out 
> for you.

Done, but still no joy ...

I placed two single-sided originals into the ADF and then ran

   $ scanimage -V
   scanimage (sane-backends) 1.0.28-871-g8270a82b-dirty; backend version 1.0.28
   $ scanimage '--batch=.%03d0.png' --batch-increment 1 --batch-print --batch-start 1 --device pixma:MX880_new-host --source 'Automatic Document Feeder' --format png --mode Color --resolution 300 -l 3 -t 0 -x 210 -y 297
   [17:56:54.517560] [bjnp] udp_command: ERROR - no data received (timeout = 100)
   [17:56:54.517651] [bjnp] bjnp_init_device_structure: Cannot read mac address, skipping this scanner
   [17:56:54.537210] [bjnp] udp_command: ERROR - no data received (timeout = 100)
   [17:56:54.537237] [bjnp] bjnp_init_device_structure: Cannot read mac address, skipping this scanner
   Scanning infinity pages, incrementing by 1, numbering from 1
   Scanning page 1
   Scanned page 1. (scanner status = 5)
   Scanning page 2
   scanimage: sane_read: Document feeder out of documents
   Scanned page 2. (scanner status = 7)
   Batch terminated, 2 pages scanned
   $

The scanner scanned  the first sheet ok,  placed it in the  output tray,
partly pulled in the second sheet,  and then stalled,  while at the same
time signalling on its display  that it is busy and having WiFi traffic.
It ignored any buttons pressed and had to be power-cycled.

I know about the existence of environment variable "SANE_DEBUG_BJNP" but
have no idea what value to set it to  to provide reasonable information.
Could someone please guide me?

Sincerely,
  Rainer

PS: And plenty of kudos to Bruce who went into all this trouble of sett-
ing up this ebuild and instructing me how to use it :-)