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alexpevzner / sane-airscan

Scanner Access Now Easy - universal driver for eSCL (Apple AirScan) and WSD
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Regression for HP OfficeJet 6950 and HP OfficeJet 6960 #307

Closed essembeh closed 11 months ago

essembeh commented 11 months ago

Hi

It 's been month since my scanner (Wireless HP OfficeJet 6950) does not work anymore (I was able to reproduce the same behavior with a HP OfficeJet 6960).

I use NixOS and simple-scan was working fine in NixOS 22.11. Since 23.05 (and for 23.11), I get an error "Document Feeder empty" whereas I selected scan from flatbed.

After some investigations, I was able to use it by downgrading the flatpak version of "Simple Scan".

Here is the result of simple-scan --debug

[+0.00s] DEBUG: simple-scan.vala:2015: Starting simple-scan 44.0, PID=25091
[+0.00s] DEBUG: unsetenv() is not thread-safe and should not be used after threads are created
[+0.14s] DEBUG: _g_io_module_get_default: Found default implementation dconf (DConfSettingsBackend) for ‘gsettings-backend’
[+0.17s] DEBUG: app-window.vala:2002: Loading state from /home/seb/.config/simple-scan/state
[+0.17s] WARNING: scanner.vala:1739: Unknown ScanType: . Please report this error.
[+0.17s] DEBUG: app-window.vala:1981: Restoring window to 600x400 pixels
[+0.19s] DEBUG: scanner.vala:1619: sane_init () -> SANE_STATUS_GOOD
[+0.19s] DEBUG: scanner.vala:1625: SANE version 1.2.1
[+0.19s] DEBUG: scanner.vala:1686: Requesting redetection of scan devices
[+0.19s] DEBUG: scanner.vala:863: Processing request
[+0.45s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+8.74s] DEBUG: scanner.vala:348: sane_get_devices () -> SANE_STATUS_GOOD
[+8.74s] DEBUG: scanner.vala:374: Device: name="escl:https://10.0.2.2:443" vendor="HP" model="OfficeJet 6950 [CFC9A1]" type="platen,adf scanner"
[+9.05s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+9.73s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+10.15s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+10.27s] DEBUG: simple-scan.vala:1820: Requesting scan at 300 dpi from device 'escl:https://10.0.2.2:443'
[+10.27s] DEBUG: scanner.vala:1777: Scanner.scan ("escl:https://10.0.2.2:443", dpi=300, scan_mode=ScanMode.COLOR, depth=8, type=single, side=front, paper_width=0, paper_height=0, brightness=0, contrast=0, delay=0ms)
[+10.27s] DEBUG: scanner.vala:863: Processing request
[+10.59s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+11.13s] DEBUG: scanner.vala:924: sane_open ("escl:https://10.0.2.2:443") -> SANE_STATUS_GOOD
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (0)
[+11.13s] DEBUG: scanner.vala:795: Option 0: name='(null)' title='Number of options' type=int size=4 cap=soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Read-only option that specifies how many options a specific device supports.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (1)
[+11.13s] DEBUG: scanner.vala:795: Option 1: name='(null)' title='Scan mode' type=group size=0
[+11.13s] DEBUG: scanner.vala:798:   Description: 
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (2)
[+11.13s] DEBUG: scanner.vala:795: Option 2: name='mode' title='Scan mode' type=string size=6 values=["Gray", "Color"] cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Selects the scan mode (e.g., lineart, monochrome, or color).
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (3)
[+11.13s] DEBUG: scanner.vala:795: Option 3: name='resolution' title='Scan resolution' type=int size=4 unit=dpi values=[75, 100, 200, 300, 600, 1200] cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Sets the resolution of the scanned image.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (4)
[+11.13s] DEBUG: scanner.vala:795: Option 4: name='source' title='Scan source' type=string size=8 values=["Flatbed", "ADF"] cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Selects the scan source (such as a document-feeder).
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (5)
[+11.13s] DEBUG: scanner.vala:795: Option 5: name='(null)' title='Geometry' type=group size=0 cap=advanced
[+11.13s] DEBUG: scanner.vala:798:   Description: Scan area and media size options
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (6)
[+11.13s] DEBUG: scanner.vala:795: Option 6: name='tl-x' title='Top-left x' type=fixed size=4 unit=mm min=0.000000, max=215.222656, quant=0 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Top-left x position of scan area.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (7)
[+11.13s] DEBUG: scanner.vala:795: Option 7: name='tl-y' title='Top-left y' type=fixed size=4 unit=mm min=0.000000, max=299.889328, quant=0 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Top-left y position of scan area.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (8)
[+11.13s] DEBUG: scanner.vala:795: Option 8: name='br-x' title='Bottom-right x' type=fixed size=4 unit=mm min=0.677322, max=215.899994, quant=0 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Bottom-right x position of scan area.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (9)
[+11.13s] DEBUG: scanner.vala:795: Option 9: name='br-y' title='Bottom-right y' type=fixed size=4 unit=mm min=0.677322, max=300.566666, quant=0 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Bottom-right y position of scan area.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (10)
[+11.13s] DEBUG: scanner.vala:795: Option 10: name='(null)' title='Enhancement' type=group size=0 cap=advanced
[+11.13s] DEBUG: scanner.vala:798:   Description: 
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (11)
[+11.13s] DEBUG: scanner.vala:795: Option 11: name='preview' title='Preview' type=bool size=4 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Request a preview-quality scan.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (12)
[+11.13s] DEBUG: scanner.vala:795: Option 12: name='preview-in-gray' title='Force monochrome preview' type=bool size=4 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   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.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (13)
[+11.13s] DEBUG: scanner.vala:795: Option 13: name='brightness' title='Brightness' type=int size=4 min=0, max=2000, quant=1 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Controls the brightness of the acquired image.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (14)
[+11.13s] DEBUG: scanner.vala:795: Option 14: name='contrast' title='Contrast' type=int size=4 min=0, max=2000, quant=1 cap=soft-select,soft-detect
[+11.13s] DEBUG: scanner.vala:798:   Description: Controls the contrast of the acquired image.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (15)
[+11.13s] DEBUG: scanner.vala:795: Option 15: name='sharpen' title='Sharpen' type=int size=4 min=-511731360, max=32679, quant=-190837479 cap=soft-select,soft-detect,inactive
[+11.13s] DEBUG: scanner.vala:798:   Description: Set sharpen value.
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (16)
[+11.13s] DEBUG: scanner.vala:795: Option 16: name='threshold' title='Threshold' type=int size=4 min=0, max=255, quant=1 cap=soft-select,soft-detect,inactive
[+11.13s] DEBUG: scanner.vala:798:   Description: Select minimum-brightness to get a white point
[+11.13s] DEBUG: scanner.vala:1002: sane_get_option_descriptor (17)
[+11.13s] DEBUG: scanner.vala:602: sane_control_option (4, SANE_ACTION_SET_VALUE, source="Flatbed") -> (SANE_STATUS_GOOD, "Flatbed")
[+11.13s] DEBUG: scanner.vala:602: sane_control_option (2, SANE_ACTION_SET_VALUE, mode="Color") -> (SANE_STATUS_GOOD, "Color")
[+11.13s] DEBUG: scanner.vala:514: sane_control_option (3, SANE_ACTION_SET_VALUE, resolution=300) -> (SANE_STATUS_GOOD, 300)
[+11.13s] DEBUG: scanner.vala:584: sane_control_option (8, SANE_ACTION_SET_VALUE, br-x=option.range.max=215.899994) -> (SANE_STATUS_GOOD)
[+11.13s] DEBUG: scanner.vala:584: sane_control_option (9, SANE_ACTION_SET_VALUE, br-y=option.range.max=300.566666) -> (SANE_STATUS_GOOD)
[+11.13s] DEBUG: scanner.vala:449: scale_int: scaling 0 [min: -100, max: 100] to 1000 [min: 0, max: 2000]
[+11.13s] DEBUG: scanner.vala:514: sane_control_option (13, SANE_ACTION_SET_VALUE, brightness=1000) -> (SANE_STATUS_GOOD, 1000)
[+11.13s] DEBUG: scanner.vala:449: scale_int: scaling 0 [min: -100, max: 100] to 1000 [min: 0, max: 2000]
[+11.13s] DEBUG: scanner.vala:514: sane_control_option (14, SANE_ACTION_SET_VALUE, contrast=1000) -> (SANE_STATUS_GOOD, 1000)
[+12.25s] DEBUG: scanner.vala:1352: sane_start (page=0, pass=0) -> SANE_STATUS_NO_DOCS
[+12.25s] DEBUG: scanner.vala:1325: sane_cancel ()
[+12.25s] DEBUG: scanner.vala:825: sane_cancel ()
[+12.25s] DEBUG: scanner.vala:828: sane_close ()
[+12.25s] CRITICAL: page_get_has_data: assertion 'self != NULL' failed
[+12.25s] CRITICAL: book_delete_page: assertion 'page != NULL' failed
[+12.61s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+13.80s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+14.43s] DEBUG: app-window.vala:2078: Saving state to /home/seb/.config/simple-scan/state
[+15.04s] DEBUG: autosave-manager.vala:201: Deleting autosave records
[+15.04s] WARNING: autosave-manager.vala:214: Failed to delete autosaves: Error opening directory “/home/seb/.cache/simple-scan/autosaves”: No such file or directory
[+15.04s] DEBUG: scanner.vala:1807: Stopping scan thread
[+15.04s] DEBUG: scanner.vala:863: Processing request
[+15.05s] DEBUG: scanner.vala:1818: sane_exit ()

And here is a capture of what happens: d8611a98bc8f24bd7fdcd2440e4e0f49b0b9083c

And here is the post I initially opened on NixOS forum

alexpevzner commented 11 months ago

Hi @essembeh,

DEBUG: scanner.vala:924: sane_open ("escl:https://10.0.2.2:443") -> SANE_STATUS_GOOD

We actually have two independent eSCL drivers for SANE: sane-escl and sane-airscan. In your case, simple-scan uses sane-escl (saneopen ("escl_:https://10.0.2.2:443")). You are writing issue against sane-airscan.

So my suggestion would be to try to switch to sane-airscan. If it wouldn't help, you are welcome to file a separate issue.

essembeh commented 11 months ago

Hi @alexpevzner

Thanks for the details, I'll open a ticket on sane-escl project. May I ask some more questions, as this is rather obscure to me.

How can I switch to sane-airscan instead of sane-escl? Is that possible with simple-scan to force using another driver? There is only one choice in simple-scan selection list...

Thanls

essembeh commented 10 months ago

Just for information, I was finally able to use airscan driver instead of the escl driver for my HP 6950.

I had to explicitly disable escl so that sane uses airscan to scan ... and it works.

There is still an open ticket on sane-backends project because the escl driver does not work. But thanks airscan, I can scan :)

Thanks