[sane-devel] Problem with Plustek and Canonscan 1220u on Mac 10.3.2

[Stephen Magladry]

I am using the new pre-compiled software from 
<http://www.ellert.se/twain-sane/> from 2/15 and I am have problems 
with the Plustek back-end with the Canoscan 1220u scanner with Mac OS 
10.3.2.

The scan appears to complete, but then the scanimage command appears to 
hang.
Here's some basic information that everyone seems to supply.


[blah:~] blah% sane-find-scanner

   # No SCSI scanners found. If you expected something different, make 
sure that
   # you have loaded a SCSI driver for your SCSI adapter.

found USB scanner (vendor=0x04a9 [Canon], product=0x2207 [CanoScan], 
chip=LM9832/3) at libusb:002:002-04a9-2207-00-00
   # Your USB scanner was (probably) detected. It may or may not be 
supported by
   # SANE. Try scanimage -L and read the backend's manpage.

   # Scanners connected to the parallel port or other proprietary ports 
can't be
   # detected by this program.

   # You may want to run this program as root to find all devices. Once 
you
   # found the scanner devices, be sure to adjust access permissions as
   # necessary.
[blah:~] blah% scanimage -L
device `plustek:libusb:002:002-04a9-2207-00-00' is a Canon N1220U USB 
flatbed scanner




I then enable debug messages.
export SANE_DEBUG_PLUSTEK=255
export SANE_DEBUG_SANEI_USB=255

and

[blah:~] blah% scanimage -T

appears to complete successfully, but


[blah:~] blah% scanimage >test.pnm

hangs the terminal window, not ever giving me back a command prompt. 
The debugging information is extensive and too much to provided 
completely here, but here are the last few lines.


....
[plustek] usb_ScanReadImage() done, result: 0
[plustek] sane_read - read 744 bytes
[plustek] sane_read - read 744 bytes
[plustek] usb_ReadData()
[plustek] usb_ScanReadImage(2988)
[sanei_usb] sanei_usb_write_bulk: trying to write 4 bytes
[sanei_usb] 0000: 01 00 0B AC                                     
................
usb_bulk_write: ep addr = 0x03
Converting ep address to pipeRef.
ep_to_pipeRef: Pipe 1: DIR: 1 number: 1
ep_to_pipeRef: Pipe 2: DIR: 1 number: 2
ep_to_pipeRef: Pipe 3: DIR: 0 number: 3
ep_to_pipeRef: pipeRef for ep address 0x03 found: 0x03
usb_bulk_write: endpoint=0x03 size=4 timeout=30000 ms
read/write completed, result=0, size=4
[sanei_usb] sanei_usb_write_bulk: wanted 4 bytes, wrote 4 bytes
[sanei_usb] sanei_usb_read_bulk: trying to read 2988 bytes
usb_bulk_read: ep addr = 0x82
Converting ep address to pipeRef.
ep_to_pipeRef: Pipe 1: DIR: 1 number: 1
ep_to_pipeRef: Pipe 2: DIR: 1 number: 2
ep_to_pipeRef: pipeRef for ep address 0x82 found: 0x02
usb_bulk_read: endpoint=0x82 size=2988 timeout=30000 ms
read/write completed, result=0, size=2988
[sanei_usb] 0000: BA A7 BD D5 DC DE DF E1 E6 E6 E5 E6 E5 E6 EA EA 
................
[sanei_usb] 0010: EA EA E8 E8 EA E8 E9 EC EC EB EA EC EB E7 E5 E9 
................
[sanei_usb] 0020: E8 E8 E8 E8 EA F1 F1 EC EA E8 E8 E7 E9 E5 E6 E8 
................
...
bunch of [sanei_usb]  removed. Didn't seem to add much to the getting 
to the problem.
...
[sanei_usb] 0AD0: 54 53 4C 44 40 3A 30 32 2E 2C 2E 2C 2C 28 2A 29 
TSLD@:02.,.,,(*)
[sanei_usb] 0AE0: 27 24 27 26 28 29 29 29 29 2D 28 28 2C 25 27 28 
'$'&())))-((,%'(
[sanei_usb] 0AF0: 26 25 27 21 2A 1F 23 1F 21 2A 31 32 29 2A 2A 27 
&%'!*.#.!*12)**'
[sanei_usb] 0B00: 30 2D 29 21 12 28 36 3F 44 43 42 40 28 49 26 33 
0-)!.(6?DCB@(I&3
[sanei_usb] 0B10: 3A 35 2F 3E 3C 33 34 41 36 3A 40 34 3F 3E 38 4B 
:5/><34A6:@4?>8K
[sanei_usb] 0B20: 49 40 3E 33 40 4C 54 CF FF FF FF FF FF FF E4 6B 
I@>3 at LT........k
[sanei_usb] 0B30: 49 46 3D 36 22 34 29 2D 2E 29 32 34 3B 36 4A 5B 
IF=6"4)-.)24;6J[
[sanei_usb] 0B40: 7D D5 FA FF FF FF FF FF FF FF FF FF FF FF FF FF 
}...............
[sanei_usb] 0B50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
................
[sanei_usb] 0B60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
................
[sanei_usb] 0B70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
................
[sanei_usb] 0B80: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
................
[sanei_usb] 0B90: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 
................
[sanei_usb] 0BA0: FF FF FF FF FF FF FF FF FF FF 00 71             
...........q....
[sanei_usb] sanei_usb_read_bulk: wanted 2988 bytes, got 2988 bytes
[plustek] usb_ScanReadImage() done, result: 0
[plustek] sane_read - read 744 bytes
[plustek] reader_process: finished reading data


Anyone have any ideas?


Regards,


Stephen Magladry
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