Unable to start scan
Since upgrading to Debian 11, neither of our computers are able to use Simple Scan. Below is the Debug info:
[+0.00s] DEBUG: simple-scan.vala:2012: Starting simple-scan 3.38.1, PID=11992
[+0.00s] DEBUG: unsetenv() is not thread-safe and should not be used after threads are created
[+0.01s] DEBUG: _g_io_module_get_default: Found default implementation dconf (DConfSettingsBackend) for ‘gsettings-backend’
[+0.06s] DEBUG: app-window.vala:1990: Loading state from /home/dawn/.cache/simple-scan/state
[+0.06s] DEBUG: app-window.vala:1969: Restoring window to 600x400 pixels
[+0.13s] DEBUG: scanner.vala:1548: sane_init () -> SANE_STATUS_GOOD
[+0.13s] DEBUG: scanner.vala:1554: SANE version 1.0.31
[+0.13s] DEBUG: scanner.vala:1615: Requesting redetection of scan devices
[+0.13s] DEBUG: scanner.vala:828: Processing request
[+0.51s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+7.66s] DEBUG: scanner.vala:341: sane_get_devices () -> SANE_STATUS_GOOD
[+7.66s] DEBUG: scanner.vala:353: Device: name="escl:http://192.168.1.64:80" vendor="Brother" model="MFC-J480DW" type="flatbed scanner"
[+7.98s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+76.62s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+78.19s] DEBUG: simple-scan.vala:1817: Requesting scan at 150 dpi from device 'escl:http://192.168.1.64:80'
[+78.19s] DEBUG: scanner.vala:1683: Scanner.scan ("escl:http://192.168.1.64:80", dpi=150, scan_mode=ScanMode.COLOR, depth=8, type=single, paper_width=2159, paper_height=2794, brightness=0, contrast=0, delay=3000ms)
[+78.19s] DEBUG: scanner.vala:828: Processing request
[+78.23s] DEBUG: scanner.vala:889: sane_open ("escl:http://192.168.1.64:80") -> SANE_STATUS_GOOD
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (0)
[+78.23s] DEBUG: scanner.vala:760: Option 0: name='(null)' title='Number of options' type=int size=4 cap=soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Read-only option that specifies how many options a specific device supports.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (1)
[+78.23s] DEBUG: scanner.vala:760: Option 1: name='(null)' title='Scan mode' type=group size=4
[+78.23s] DEBUG: scanner.vala:763: Description:
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (2)
[+78.23s] DEBUG: scanner.vala:760: Option 2: name='mode' title='Scan mode' type=string size=8 values=["Lineart", "Gray", "Color"] cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Selects the scan mode (e.g., lineart, monochrome, or color).
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (3)
[+78.23s] DEBUG: scanner.vala:760: Option 3: name='resolution' title='Scan resolution' type=int size=4 unit=dpi values=[100, 200, 300, 600] cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Sets the resolution of the scanned image.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (4)
[+78.23s] DEBUG: scanner.vala:760: Option 4: name='preview' title='Preview' type=bool size=4 cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Request a preview-quality scan.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (5)
[+78.23s] DEBUG: scanner.vala:760: Option 5: name='preview-in-gray' title='Force monochrome preview' type=bool size=4 cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Request that all previews are done in monochrome mode. On a three-pass scanner this cuts down the number of passes to one and on a one-pass scanner, it reduces the memory requirements and scan-time of the preview.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (6)
[+78.23s] DEBUG: scanner.vala:760: Option 6: name='(null)' title='Geometry' type=group size=4 cap=advanced
[+78.23s] DEBUG: scanner.vala:763: Description: Scan area and media size options
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (7)
[+78.23s] DEBUG: scanner.vala:760: Option 7: name='tl-x' title='Top-left x' type=fixed size=4 unit=mm min=0.000000, max=214.629990, quant=0 cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Top-left x position of scan area.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (8)
[+78.23s] DEBUG: scanner.vala:760: Option 8: name='tl-y' title='Top-left y' type=fixed size=4 unit=mm min=0.000000, max=295.571320, quant=0 cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Top-left y position of scan area.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (9)
[+78.23s] DEBUG: scanner.vala:760: Option 9: name='br-x' title='Bottom-right x' type=fixed size=4 unit=mm min=1.354660, max=215.984665, quant=0 cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Bottom-right x position of scan area.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (10)
[+78.23s] DEBUG: scanner.vala:760: Option 10: name='br-y' title='Bottom-right y' type=fixed size=4 unit=mm min=1.354660, max=296.925995, quant=0 cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Bottom-right y position of scan area.
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (11)
[+78.23s] DEBUG: scanner.vala:760: Option 11: name='source' title='Scan source' type=string size=8 values=["Flatbed", "ADF"] cap=soft-select,soft-detect
[+78.23s] DEBUG: scanner.vala:763: Description: Selects the scan source (such as a document-feeder).
[+78.23s] DEBUG: scanner.vala:910: sane_get_option_descriptor (12)
[+78.23s] DEBUG: scanner.vala:571: sane_control_option (11, SANE_ACTION_SET_VALUE, source="Flatbed") -> (SANE_STATUS_GOOD, "Flatbed")
[+78.23s] DEBUG: scanner.vala:571: sane_control_option (2, SANE_ACTION_SET_VALUE, mode="Color") -> (SANE_STATUS_GOOD, "Color")
[+78.23s] DEBUG: scanner.vala:483: sane_control_option (3, SANE_ACTION_SET_VALUE, resolution=150) -> (SANE_STATUS_GOOD, 100)
[+78.23s] DEBUG: scanner.vala:523: sane_control_option (9, SANE_ACTION_SET_VALUE, br-x=215.900000) -> (SANE_STATUS_GOOD, 215.899994)
[+78.23s] DEBUG: scanner.vala:523: sane_control_option (10, SANE_ACTION_SET_VALUE, br-y=279.400000) -> (SANE_STATUS_GOOD, 279.399994)
[+78.56s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+78.92s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+88.29s] DEBUG: scanner.vala:1284: sane_start (page=0, pass=0) -> SANE_STATUS_INVAL
[+88.29s] WARNING: scanner.vala:1311: Unable to start device: Invalid argument
[+88.29s] DEBUG: scanner.vala:790: sane_cancel ()
[+88.29s] DEBUG: scanner.vala:793: sane_close ()
[+88.97s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+96.13s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+99.51s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+99.66s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+936.55s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+940.58s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+943.61s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
[+945.95s] DEBUG: app-window.vala:2065: Saving state to /home/dawn/.cache/simple-scan/state
Edited by Jeff Fortin