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Bug 62763 - scanimage reads too much data, then wedges scanner
Summary: scanimage reads too much data, then wedges scanner
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat Raw Hide
Classification: Retired
Component: sane-backends
Version: 1.0
Hardware: i386
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nils Philippsen
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 61901 79579 CambridgeTarget
TreeView+ depends on / blocked
 
Reported: 2002-04-05 07:32 UTC by Jonathan Kamens
Modified: 2007-04-18 16:41 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2006-04-25 07:33:10 UTC
Embargoed:

Attachments (Terms of Use)

Description Jonathan Kamens 2002-04-05 07:32:00 UTC 
I have a Microtek ScanMaker E6.  I have sane-backends-1.0.7-6 and related
versions installed.  I am running kernel 2.4.18-ac3.

Every time I scan a LineArt image with scanimage, I get this message at the end:

scanimage: WARNING: read more data than announced by backend (4203960/4198236)

Then, the next time I attempt to use scanimage, the scanner clicks a couple of
times and does nothing, and then scanimage reports:

scanimage: sane_start: Error during device I/O

While this is happening, these messages show up in my dmesg output:

scsi0:0:4:0: Attempting to queue a TARGET RESET message
scsi0:0:4:0: Command not found
aic7xxx_dev_reset returns 0x2002
scsi: device set offline - not ready or command retry failed after bus reset:
host 0 channel 0 id 4 lun 0

The only way I've found to get the scanner working again at this point is to use
"echo scsi remove-single-device ... > /proc/scsi/scsi" and then "echo scsi
add-single-device ... > /proc/scsi/scsi".

Note: I don't know if the "read more data" problem is related to the other
problem, but I'm mentioning it just in case it is.

Note 2: The data read by the scanimage, when it's working, seems just fine.

Note 3: This happens whether I pass "--calib_once no" or "--calib_once yes" to
scanimage.
Comment 1 Tim Waugh 2002-05-02 13:50:04 UTC 
Reported upstream: 
http://www.mostang.com/pipermail/sane-devel/2002-April/003206.html
Comment 2 Tim Waugh 2002-12-23 09:38:15 UTC 
Upstream URL seems to have changed:

http://www.mostang.com/pipermail/sane-devel/2002-April/013877.html

There have been no replies though. :-(
Comment 3 Nils Philippsen 2005-10-11 08:09:25 UTC 
Is this problem present with current (FC4 or Rawhide) packages?
Comment 4 Jonathan Kamens 2005-10-14 09:31:03 UTC 
There's no way for me to tell.  I don't use the ScanMaker E6 anymore and can't
even plug it in to test it because I no longer have a SCSI controller in my
current controller and the old computer with the SCSI controller doesn't work
with FC4 or Rawhide.

Sorry.
Comment 5 Nils Philippsen 2006-04-25 07:33:10 UTC 
Closing as there is no way to test this with current versions (without the HW).
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