[sane-devel] Support Request for Ambir ImageScan Pro 820i

Sun Oct 5 00:26:04 BST 2025

I just picked this thing up and I was able to get it to work fairly well
outside of having to go back and forth between my computer anytime there
was a feed error (user error) but I tried to get this work over on Debian
with no luck so far.

I think I've included all the best info

OS: Debian 12
ScanImage Version: 1.1.1-debian; backend version 1.1.1
libusb: 2:1.0.26-1

Model: Ambir ImageScan Pro 820i
Vendor: 0x20ec
Product: 0x0820

'sane-find-scanner' output: found possible USB scanner (vendor=0x20ec
[Ambir INC], product=0x0820 [ImageScan Pro 820i], chip=GL843) at
libusb:001:016

I also included a debug log which I made after I put 'usb 0x20ec 0x0820'
inside of /etc/sane.d/genesys.conf

~# SANE_DEBUG_GENESYS=255 scanimage -L

[18:06:12.153363] [sanei_debug] Setting debug level of genesys to 255.
[18:06:12.153420] [genesys] void genesys::sane_init_impl(SANE_Int*,
SANE_Auth_Callback): start
[18:06:12.153430] [genesys] void genesys::sane_init_impl(SANE_Int*,
SANE_Auth_Callback): [18:06:12.153438] [genesys] authorize !=
null[18:06:12.153444] [genesys]
[18:06:12.153450] [genesys] SANE Genesys backend from sane-backends
1.1.1-debian
[18:06:12.153462] [genesys] SANE Genesys backend built with libusb-1.0
[18:06:12.154190] [genesys] sane_init_impl: little endian machine
[18:06:12.154202] [genesys] void genesys::probe_genesys_devices(): start
[18:06:12.154236] [genesys] SANE_Status
genesys::attach_one_device(SANE_String_Const): start
[18:06:12.154246] [genesys] genesys::Genesys_Device*
genesys::attach_device_by_name(SANE_String_Const, bool): start
[18:06:12.154253] [genesys] genesys::Genesys_Device*
genesys::attach_device_by_name(SANE_String_Const, bool): [18:06:12.154259]
[genesys]  devname: libusb:001:013, may_wait = 0[18:06:12.154265] [genesys]
[18:06:12.154272] [genesys] attach_device_by_name: trying to open device
`libusb:001:013'
[18:06:12.154279] [genesys] virtual void genesys::UsbDevice::open(const
char*): start
[18:06:12.154331] [genesys] virtual void genesys::UsbDevice::open(const
char*): completed
[18:06:12.154340] [genesys] attach_device_by_name: device `libusb:001:013'
successfully opened
[18:06:12.154348] [genesys] virtual uint16_t
genesys::UsbDevice::get_vendor_id(): start
[18:06:12.154354] [genesys] virtual uint16_t
genesys::UsbDevice::get_vendor_id(): completed
[18:06:12.154362] [genesys] virtual uint16_t
genesys::UsbDevice::get_product_id(): start
[18:06:12.154368] [genesys] virtual uint16_t
genesys::UsbDevice::get_product_id(): completed
[18:06:12.154375] [genesys] virtual void genesys::UsbDevice::close(): start
[18:06:12.154397] [genesys] virtual void genesys::UsbDevice::close():
completed
[18:06:12.154466] [genesys] genesys::Genesys_Device*
genesys::attach_device_by_name(SANE_String_Const, bool): failed
[18:06:12.154479] [genesys] attach_one_device: got error: vendor 0x20ec
product 0x820 (bcdDevice 0xffff) is not supported by this backend : Invalid
argument
[18:06:12.154489] [genesys] SANE_Status
genesys::attach_one_device(SANE_String_Const): completed
[18:06:12.154506] [genesys] probe_genesys_devices: 0 devices currently
attached
[18:06:12.154514] [genesys] void genesys::probe_genesys_devices(): completed
[18:06:12.154521] [genesys] void genesys::sane_init_impl(SANE_Int*,
SANE_Auth_Callback): completed
[18:06:12.154528] [genesys] void genesys::sane_get_devices_impl(const
SANE_Device***, SANE_Bool): start
[18:06:12.154537] [genesys] void genesys::sane_get_devices_impl(const
SANE_Device***, SANE_Bool): [18:06:12.154543] [genesys] local_only =
false[18:06:12.154553] [genesys]
[18:06:12.154749] [genesys] void genesys::probe_genesys_devices(): start
[18:06:12.154781] [genesys] SANE_Status
genesys::attach_one_device(SANE_String_Const): start
[18:06:12.154789] [genesys] genesys::Genesys_Device*
genesys::attach_device_by_name(SANE_String_Const, bool): start
[18:06:12.154796] [genesys] genesys::Genesys_Device*
genesys::attach_device_by_name(SANE_String_Const, bool): [18:06:12.154802]
[genesys]  devname: libusb:001:013, may_wait = 0[18:06:12.154808] [genesys]
[18:06:12.154814] [genesys] attach_device_by_name: trying to open device
`libusb:001:013'
[18:06:12.154820] [genesys] virtual void genesys::UsbDevice::open(const
char*): start
[18:06:12.154851] [genesys] virtual void genesys::UsbDevice::open(const
char*): completed
[18:06:12.154859] [genesys] attach_device_by_name: device `libusb:001:013'
successfully opened
[18:06:12.154868] [genesys] virtual uint16_t
genesys::UsbDevice::get_vendor_id(): start
[18:06:12.154874] [genesys] virtual uint16_t
genesys::UsbDevice::get_vendor_id(): completed
[18:06:12.154881] [genesys] virtual uint16_t
genesys::UsbDevice::get_product_id(): start
[18:06:12.154888] [genesys] virtual uint16_t
genesys::UsbDevice::get_product_id(): completed
[18:06:12.154894] [genesys] virtual uint16_t
genesys::UsbDevice::get_bcd_device(): start
[18:06:12.154900] [genesys] virtual uint16_t
genesys::UsbDevice::get_bcd_device(): completed
[18:06:12.154907] [genesys] virtual void genesys::UsbDevice::close(): start
[18:06:12.154921] [genesys] virtual void genesys::UsbDevice::close():
completed
[18:06:12.154936] [genesys] genesys::Genesys_Device*
genesys::attach_device_by_name(SANE_String_Const, bool): failed
[18:06:12.154945] [genesys] attach_one_device: got error: vendor 0x20ec
product 0x820 (bcdDevice 0x500) is not supported by this backend : Invalid
argument
[18:06:12.154954] [genesys] SANE_Status
genesys::attach_one_device(SANE_String_Const): completed
[18:06:12.154972] [genesys] probe_genesys_devices: 0 devices currently
attached
[18:06:12.154979] [genesys] void genesys::probe_genesys_devices(): completed
[18:06:12.154987] [genesys] void genesys::sane_get_devices_impl(const
SANE_Device***, SANE_Bool): completed

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
[18:06:18.802237] [genesys] void genesys::sane_exit_impl(): start
[18:06:18.802393] [genesys] void genesys::sane_exit_impl(): completed
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