[sane-devel] Microtek Phantom 336 CX USB vs Linux 2.4

[Richard Huxton]

I've worked through the FAQs, HOWTOs and man pages and think I've reached the 
stage where I need to ask here. It's not a brilliant scanner (used to lock 
sometimes in Windows), but I thought I'd see if it works. It isn't listed 
anywhere, but that applies to the net in general, not just sane. I'm working 
on the assumption it's the USB version of their 330CX parport scanner.

It's being detected (via linux "microtek" usb module) and the microtek2 
backend seems to be the best hope. I can get details of it with "scanimage 
-L" but then the output goes:

[microtek2] scsi_read_attributes: mi=0x80510fc, device='/dev/sg2', source=3
[sanei_debug] Setting debug level of sanei_scsi to 30.
[sanei_scsi] sanei_scsi_open: SG driver version: 30120
[sanei_scsi] sanei_scsi_open_extended: using 131072 bytes as SCSI buffer
[sanei_scsi] trying to enable low level command queueing
[sanei_scsi] sanei_scsi_open: Host adapter queue depth: 1
[sanei_scsi] sanei_scsi_open: SG driver can change buffer size at run time
[sanei_scsi] sanei_scsi_open: using new SG header structure
[microtek2] [scannerattributes]
[microtek2] 28,00,82,00,00,03,00,00,28,00,
[sanei_scsi] scsi_req_enter: entered 0x8052550
[sanei_scsi] sanei_scsi.issue: 0x8052550
[sanei_scsi] scsi_req_enter: queue_used: 1, queue_max: 1
[sanei_scsi] sanei_scsi_req_wait: waiting for 0x8052550
[sanei_scsi] sanei_scsi.issue: 0x8052550

At this point scanimage just hangs. strace shows:

write(4, "S\0\0\0\375\377\377\377\n@\0\0(\0\0\0\0\364\377\2770\364"..., 64) = 
64rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
fstat64(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 3), ...}) = 0
write(2, "[sanei_scsi] ", 13)           = 13
write(2, "scsi_req_enter: queue_used: 1, q"..., 44) = 44
fstat64(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 3), ...}) = 0
write(2, "[sanei_scsi] ", 13)           = 13
write(2, "sanei_scsi_req_wait: waiting for"..., 43) = 43
fstat64(2, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 3), ...}) = 0
write(2, "[sanei_scsi] ", 13)           = 13
write(2, "sanei_scsi.issue: 0x8052550\n", 28) = 28
select(5, [4], NULL, NULL, NULL

It looks like sane is issuing a command the scanner doesn't recognize, but I 
thought I'd check there's nothing obvious I've missed.

I'm using linux kernel 2.4.9-0.18 and the sane RPMs from RedHat 7.2 
(1.0.5-2). I have the full output of scanimage and strace should the rest be 
needed.

TIA

--
  Richard Huxton