[sane-devel] libsane and my scanner in Ubuntu 20.10

[Martin van Es]

On Wed, Oct 7, 2020 at 3:25 PM Alexander Pevzner <pzz at apevzner.com> wrote:

> Hi Martin.
>
> On 10/7/20 3:35 PM, Martin van Es wrote:
> > Yesterday I upgraded to Ubuntu 20.10 and I can't use my scanner anymore.
> > My (Canon N670U) was (and is?) supported for a very long time, but now
> > scanimage -L doesn't return the scanner (and therefore xsane does not
> > find it):
> >
> > $ scanimage -L
>
> Please, lsusb -v
>

 Bus 001 Device 005: ID 04a9:220d Canon, Inc. CanoScan N670U/N676U/LiDE 20
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               1.10
 bDeviceClass          255 Vendor Specific Class
 bDeviceSubClass         0
 bDeviceProtocol         0
 bMaxPacketSize0         8
 idVendor           0x04a9 Canon, Inc.
 idProduct          0x220d CanoScan N670U/N676U/LiDE 20
 bcdDevice            1.00
 iManufacturer          64 Canon
 iProduct               77 CanoScan
 iSerial                 0
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength       0x0027
   bNumInterfaces          1
   bConfigurationValue     1
   iConfiguration          0
   bmAttributes         0xa0
     (Bus Powered)
     Remote Wakeup
   MaxPower              500mA
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           3
     bInterfaceClass       255 Vendor Specific Class
     bInterfaceSubClass      0
     bInterfaceProtocol    255
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            3
         Transfer Type            Interrupt
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0001  1x 1 bytes
       bInterval              16
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x03  EP 3 OUT
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0040  1x 64 bytes
       bInterval               0
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
 (Bus Powered)

dmesg when inserting the scanner:
[ 1027.863405] usb 1-1: new full-speed USB device number 6 using xhci_hcd
[ 1028.023470] usb 1-1: New USB device found, idVendor=04a9,
idProduct=220d, bcdDevice= 1.00
[ 1028.023475] usb 1-1: New USB device strings: Mfr=64, Product=77,
SerialNumber=0
[ 1028.023479] usb 1-1: Product: CanoScan
[ 1028.023481] usb 1-1: Manufacturer: Canon


And for Sedat:

Typo? Version *1*0.31-2?


Yes, it actually is 1.0.31-2, my apologies

Martin
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