[sane-devel] Problems with Epson 636U

[Karl Heinz Kremer]

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James,

unfortunately I am not familiar with Sane and any flavour of BSD systems.
A core dump does not help, there is an easier way of getting more informati=
on:
You can create a log file that contains all the communication between the
scanner and the backend. This will hopefully help to identify what goes
wrong:

Set the debug variable (depending on your shell you may have to use
a different syntax):
export SANE_DEBUG_EPSON=3D128
xsane > /tmp/scan.log 2>&1

You can use any other frontend with the same output redirection.

Karl Heinz

On Sun, Sep 09, 2001 at 07:20:55PM +0100, James O'Test wrote:
> I just got myself a Epson636u Scanner and am having a bit of a problem wi=
th it.
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> I am new to scanning in general, so as I will try to give all the info th=
at one might need to help me on this, feel free to hit me with the clue sti=
ck if I leave something out.
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> This is on a FreeBSD 4.4RC machine. Scanner is a Epson 636U, USB.
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> On FreeBSD, my scanner is connecting to the sytem as:
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> uscanner1: EPSON Perfection636, rev 1.00/1.04, addr 3
>=20
>=20
> I have made sure to have my epson.conf file to read:
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> usb /dev/uscanner1
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> And I have tried to make sure that permissions on my permissions on the d=
evice correct:
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> crw-rw-rw-  1 root  operator  156,   1 Sep  9 00:57 uscanner1
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> Now, onto the problem...
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> Half the time, when I run xsane it hangs. Doing a trus on xsane, I can se=
e that every time it hangs at this point:
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> open("./epson.conf",0,0666)                      ERR#2 'No such file or
> directory'
> open("/usr/local/etc/sane.d/epson.conf",0,0666)  =3D 6 (0x6)
> fstat(6,0xbfbfec8c)                              =3D 0 (0x0)
> read(0x6,0x80fd000,0x2000)                       =3D 399 (0x18f)
> open("/dev/uscanner1",2050,027757766774)         =3D 7 (0x7)
> write(7,0xbfbfd476,2)                            =3D 2 (0x2)
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> If I ctrl-c the process and re-run it enough, it will find the scanner. O=
nce it does, and I try to do a preview, it will hang as well:
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> ioctl(3,FIONREAD,0xbfbfdfd8)                     =3D 0 (0x0)
> poll(0x840f210,0x2,0x0)                          =3D 0 (0x0)
> open("/dev/uscanner1",2050,027757763660)         =3D 6 (0x6)
> write(6,0xbfbfe8a6,2)                            =3D 2 (0x2)
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> At this point, if I turn off and on the scanner, it will pop up with a er=
ror message, and then be able to do a preview. About 50% of the time when d=
oing this preview, the process will core dump.
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> writev(0x3,0xbfbfc434,0x1)                       =3D 8192 (0x2000)
> writev(0x3,0xbfbfc434,0x1)                       =3D 280 (0x118)
> SIGNAL 11
> SIGNAL 11
> Process stopped because of:  16
> process exit, rval =3D 139
> Segmentation fault (core dumped)
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> The other half of the time, the preview will come through. Upon trying to=
 do any other funtion that would involve talking to the scanner, the proces=
s will then core dump.
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> Has anyone seen anything like this before? I have a saved core file if th=
at might help anyone.
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> Advice on where to go from here?
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> Thanks!
> Jim
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> _______________________________________________
> Sane-devel mailing list
> Sane-devel@www.mostang.com
> http://www.mostang.com/mailman/listinfo/sane-devel

--=20
Karl Heinz Kremer                                  khk@khk.net
PGP Key at http://www.freecolormanagement.com/download/khk.asc
EPSON Sane Backend:         http://www.freecolormanagement.com

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