/etc/sane.d/canon_pp.conf is in libsane 1.0.23-3ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 | # Define which port to use if one isn't specified - you should only have
# one of these lines!
# This is the default port to be used - others will be detected
ieee1284 parport0
# Define the location of our pixel weight file, can begin with ~/ if needed.
# You can have as many of these as you like - lines with ports that don't exist
# will be ignored.
#
# Parameters are:
# calibrate /path/to/calibration-file port-name
#
# The format of port-name is dependant on your OS version.
#
# If a file isn't speficied, the default name will be
# ~/.sane/canon_pp-calibration-[port-name]
calibrate ~/.sane/canon_pp-calibration-pp0 parport0
# calibrate /etc/sane/my_calibration parport1
# Enable the next line if you're having trouble with ECP mode such as I/O
# errors. Nibble mode is slower, but more reliable.
#force_nibble
# Set a default initialisation mode for each port. Valid modes are:
# AUTO (attempts to automatically detect by trying both methods)
# FB620P (10101010 style.. also works for FB320P)
# FB630P (11001100 style.. also works for FB330P, N340P, N640P)
init_mode AUTO parport0
# init_mode FB620P parport0
# init_mode FB630P parport0
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