Output from simple-scan run in debug mode:
$ simple-scan -d
[+0.00s] DEBUG: simple-scan.vala:638: Starting Simple Scan 3.30.1.1, PID=29211
(simple-scan:29211): Gtk-WARNING **: 14:56:04.684: Failed to register client:
GDBus.Error:org.gnome.SessionManager.AlreadyRegistered: Unable to register
client
[+0.04s] DEBUG: app-window.vala:1715: Loading state from
/home/chris/.cache/simple-scan/state
[+0.04s] DEBUG: app-window.vala:1672: Restoring window to 600x400 pixels
[+0.04s] DEBUG: app-window.vala:1676: Restoring window to maximized
[+0.04s] DEBUG: autosave-manager.vala:64: Loading autosave information
[+0.04s] DEBUG: autosave-manager.vala:259: Waiting to autosave...
[+0.07s] DEBUG: scanner.vala:1461: sane_init () -> SANE_STATUS_GOOD
[+0.07s] DEBUG: scanner.vala:1467: SANE version 1.0.27
[+0.07s] DEBUG: scanner.vala:1528: Requesting redetection of scan devices
[+0.07s] DEBUG: scanner.vala:806: Processing request
[+0.14s] DEBUG: autosave-manager.vala:281: Autosaving book information
[+0.18s] DEBUG: app-window.vala:1776: Saving state to
/home/chris/.cache/simple-scan/state
[+8.26s] DEBUG: scanner.vala:341: sane_get_devices () -> SANE_STATUS_GOOD
[+8.26s] DEBUG: scanner.vala:353: Device: name="brother4:net1;dev0"
vendor="Brother" model="*dcp-l2550dw" type="dcp-l2550dw"
[+9.48s] DEBUG: simple-scan.vala:455: Requesting scan at 300 dpi from device
'brother4:net1;dev0'
[+9.48s] DEBUG: scanner.vala:1576: Scanner.scan ("brother4:net1;dev0", dpi=300,
scan_mode=ScanMode.COLOR, depth=8, type=ScanType.SINGLE, paper_width=2159,
paper_height=2794, brightness=0, contrast=0, delay=10000ms)
[+9.48s] DEBUG: scanner.vala:806: Processing request
[+10.72s] DEBUG: scanner.vala:867: sane_open ("brother4:net1;dev0") ->
SANE_STATUS_GOOD
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (0)
[+10.72s] DEBUG: scanner.vala:738: Option 0: name='(null)' title='Number of
options' type=bool size=4 cap=soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Read-only option that
specifies how many options a specific devices supports.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (1)
[+10.72s] DEBUG: scanner.vala:738: Option 1: name='(null)' title='Mode'
type=group size=4 cap=advanced
[+10.72s] DEBUG: scanner.vala:741: Description:
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (2)
[+10.72s] DEBUG: scanner.vala:738: Option 2: name='mode' title='Scan mode'
type=string size=30 values=["Black & White", "Gray[Error Diffusion]", "True
Gray", "24bit Color", "24bit Color[Fast]"] cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Select the scan mode
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (3)
[+10.72s] DEBUG: scanner.vala:738: Option 3: name='resolution' title='Scan
resolution' type=int size=4 unit=dpi values=[100, 150, 200, 300, 400, 600,
1200, 2400, 4800, 9600] cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Sets the resolution of the
scanned image.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (4)
[+10.72s] DEBUG: scanner.vala:738: Option 4: name='source' title='Scan source'
type=string size=64 values=["FlatBed", "Automatic Document Feeder(left
aligned)", "Automatic Document Feeder(left aligned,Duplex)", "Automatic
Document Feeder(centrally aligned)", "Automatic Document Feeder(centrally
aligned,Duplex)"] cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Selects the scan source (such
as a document-feeder).
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (5)
[+10.72s] DEBUG: scanner.vala:738: Option 5: name='brightness'
title='Brightness' type=fixed size=4 unit=percent min=-50.000000,
max=50.000000, quant=65536 cap=soft-select,soft-detect,inactive
[+10.72s] DEBUG: scanner.vala:741: Description: Controls the brightness of
the acquired image.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (6)
[+10.72s] DEBUG: scanner.vala:738: Option 6: name='contrast' title='Contrast'
type=fixed size=4 unit=percent min=-50.000000, max=50.000000, quant=65536
cap=soft-select,soft-detect,inactive
[+10.72s] DEBUG: scanner.vala:741: Description: Controls the contrast of the
acquired image.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (7)
[+10.72s] DEBUG: scanner.vala:738: Option 7: name='(null)' title='Geometry'
type=group size=4 cap=advanced
[+10.72s] DEBUG: scanner.vala:741: Description:
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (8)
[+10.72s] DEBUG: scanner.vala:738: Option 8: name='tl-x' title='Top-left x'
type=fixed size=4 unit=mm min=0.000000, max=215.899994, quant=6553
cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Top-left x position of scan
area.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (9)
[+10.72s] DEBUG: scanner.vala:738: Option 9: name='tl-y' title='Top-left y'
type=fixed size=4 unit=mm min=0.000000, max=355.599991, quant=6553
cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Top-left y position of scan
area.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (10)
[+10.72s] DEBUG: scanner.vala:738: Option 10: name='br-x' title='Bottom-right
x' type=fixed size=4 unit=mm min=0.000000, max=215.899994, quant=6553
cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Bottom-right x position of
scan area.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (11)
[+10.72s] DEBUG: scanner.vala:738: Option 11: name='br-y' title='Bottom-right
y' type=fixed size=4 unit=mm min=0.000000, max=355.599991, quant=6553
cap=soft-select,soft-detect
[+10.72s] DEBUG: scanner.vala:741: Description: Bottom-right y position of
scan area.
[+10.72s] DEBUG: scanner.vala:888: sane_get_option_descriptor (12)
[+10.72s] DEBUG: scanner.vala:549: sane_control_option (4,
SANE_ACTION_SET_VALUE, "FlatBed") -> (SANE_STATUS_GOOD, "FlatBed")
[+10.72s] DEBUG: scanner.vala:549: sane_control_option (2,
SANE_ACTION_SET_VALUE, "24bit Color") -> (SANE_STATUS_GOOD, "24bit Color")
[+10.72s] DEBUG: scanner.vala:465: sane_control_option (3,
SANE_ACTION_SET_VALUE, 300) -> (SANE_STATUS_GOOD, 300)
[+10.72s] DEBUG: scanner.vala:505: sane_control_option (10,
SANE_ACTION_SET_VALUE, 215.900000) -> (SANE_STATUS_GOOD, 215.880234)
[+10.72s] DEBUG: scanner.vala:505: sane_control_option (11,
SANE_ACTION_SET_VALUE, 279.400000) -> (SANE_STATUS_GOOD, 279.374420)
[+15.30s] DEBUG: scanner.vala:1217: sane_start (page=0, pass=0) ->
SANE_STATUS_GOOD
[+15.30s] DEBUG: scanner.vala:1234: sane_get_parameters () -> SANE_STATUS_GOOD
[+15.30s] DEBUG: scanner.vala:1246: Parameters: format=SANE_FRAME_RGB
last_frame=SANE_TRUE bytes_per_line=7392 pixels_per_line=2464 lines=3298 depth=8
[+15.30s] DEBUG: simple-scan.vala:350: Page is 2464 pixels wide, 3298 pixels
high, 8 bits per pixel
[+15.34s] DEBUG: simple-scan.vala:284: Getting color profile for device
brother4:net1;dev0
[+15.35s] DEBUG: simple-scan.vala:304: Unable to find colord device
brother4:net1;dev0: property match 'Serial'='sane:brother4:net1;dev0' does not
exist
Segmentation fault (core dumped)
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https://bugs.launchpad.net/bugs/1805039
Title:
Simple Scan seg-faults when scnanning on "Photo"(24-bit) quality.
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