# Problem with HP backend...

From: Jens Petersohn (jkp@mccoy.penguinpowered.com)
Date: Thu Jul 13 2000 - 09:17:29 PDT

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  Hi all,

  I'm using sane 1.0.2 with an HP scanner on an Adaptec 2940 card.
  Scanimage sometimes acquires an image, sometimes simply crashes
  with a core dump.
  If it does succeed, the resulting image is corrupted, having
  bands of color on it and straight lines are offset at various
  places.
  I've tested the scanner on another system with Windows, works fine
  there.
  There are no kernel error messages logged for the SCSI bus.
  Backend debug log and a sample corrupted image are available.
  Note that when the program suceeds in acquiring (a corrupted)
  image, no errors are recorded.

  Here's some relevant info:

  Linux scotty.petersohn.net 2.2.14-5.0 #6 Fri May 19 14:04:37 CDT 2000 i686 unknown
  Kernel modules 2.3.10-pre1
  Gnu C 2.95.2
  Binutils 2.9.5.0.22
  Linux C Library 2.1.3
  Dynamic linker ldd (GNU libc) 2.1.3
  Procps 2.0.6
  Mount 2.10f
  Net-tools 1.54
  Console-tools 0.3.3
  Sh-utils 2.0
  Modules Loaded

  And about the SCSI:

  Adaptec AIC7xxx driver version: 5.1.28/3.2.4
  Compile Options:
  TCQ Enabled By Default : Disabled
  AIC7XXX_PROC_STATS : Disabled
  AIC7XXX_RESET_DELAY : 5

  Adapter Configuration:
  SCSI Adapter: Adaptec AHA-294X SCSI host adapter
  Narrow Controller at PCI 0/16/0
  PCI MMAPed I/O Base: 0xee000000
  Adapter SEEPROM Config: SEEPROM found and used.
  Adaptec SCSI BIOS: Enabled
  IRQ: 10
  SCBs: Active 0, Max Active 1,
  Allocated 15, HW 16, Page 255
  Interrupts: 16887
  BIOS Control Word: 0x00b6
  Adapter Control Word: 0x005d
  Extended Translation: Enabled
  Disconnect Enable Flags: 0x00ff
  Tag Queue Enable Flags: 0x0000
  Ordered Queue Tag Flags: 0x0000
  Default Tag Queue Depth: 8
  Tagged Queue By Device array for aic7xxx host instance 0:
  {255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
  Actual queue depth per device for aic7xxx host instance 0:
  {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}

  Statistics:

  (scsi0:0:2:0)
  Device using Narrow/Async transfers.
  Transinfo settings: current(0/0/0/0), goal(0/0/0/0), user(25/15/0/0)
  Total transfers 1891 (1891 reads and 0 writes)

  And the scanner:

  Attached devices:
  Host: scsi0 Channel: 00 Id: 02 Lun: 00
  Vendor: HP Model: C5110A Rev: 3638
  Type: Processor ANSI SCSI revision: 02

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