Date: Mon, 17 Sep 2001 10:23:12 -0400 From: Jim <jameso@elwood.net> To: freebsd-questions@freebsd.org Subject: Problems with FreeBSD USB sub system and Espon 636U? (Was: Re: [sane-devel] Problems with Epson 636U) Message-ID: <20010917102312.A96684@elwood.net>
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Mr. Kremer has been helping me out with this problem concerning Sane.
After looking at some of the details of this problem, he feels that it
may be a bug in FreeBSD's USB subsystem.
Has anyone seen a issue like this before? I have included the
discussion that Mr. Kremer and I have been having below. If there is
any other information that may be helpfull in tracking this problem
down, please let me know and I will provide it.
Thanks for any help, pointers, hits, etc.
Jim
On Monday, September 10th, Karl Heinz Kremer said...
: It looks like the communication between the scanner and
: the backend fails
: right in the middle of setting up the scan operation.
: The backend successfully
: sends a receives quite a bit of data before it stops. I
: suspect that this is
: a problem with the USB sub-system. As I said before, I
: have no experience with
: xxxxBSD systems. Is there any web site that has
: configuration information for
: Sane under BSD?
:
: Karl Heinz
:
: On Mon, Sep 10, 2001 at 03:56:18AM +0100, James O'Test
: wrote:
: > Thank you for the quick reply. I followed your advice
: and generated the log file for you.
: >
: > I ran xsane, it started up, I tried to aquire a
: preview and it hung.
: >
: > Please, let me know if there if anything else I can
: do to help track the
: > problem down.
: >
: > Thank you.
: > Jim
: >
: >
: >
: > On Sunday, September 9th, Karl Heinz Kremer said...
: > : 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 information:
: > : 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=128
: > : 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 with it.
: > : >
: > : > I am new to scanning in general, so as I will try
: to
: > : give all the info that one might need to help me
: on
: > : this, feel free to hit me with the clue stick if I
: > : leave something out.
: > : >
: > : > This is on a FreeBSD 4.4RC machine. Scanner is a
: > : Epson 636U, USB.
: > : >
: > : > On FreeBSD, my scanner is connecting to the
: sytem
: > : as:
: > : >
: > : > uscanner1: EPSON Perfection636, rev 1.00/1.04,
: addr
: > : 3
: > : >
: > : >
: > : > I have made sure to have my epson.conf file to
: read:
: > : >
: > : > usb /dev/uscanner1
: > : >
: > : > And I have tried to make sure that permissions on
: my
: > : permissions on the device correct:
: > : >
: > : > crw-rw-rw- 1 root operator 156, 1 Sep 9
: 00:57
: > : uscanner1
: > : >
: > : > Now, onto the problem...
: > : >
: > : > Half the time, when I run xsane it hangs. Doing
: a
: > : trus on xsane, I can see that every time it hangs
: at
: > : this point:
: > : >
: > : > open("./epson.conf",0,0666)
: > : ERR#2 'No such file or
: > : > directory'
: > : > open("/usr/local/etc/sane.d/epson.conf",0,0666)
: = 6
: > : (0x6)
: > : > fstat(6,0xbfbfec8c)
: = 0
: > : (0x0)
: > : > read(0x6,0x80fd000,0x2000)
: =
: > : 399 (0x18f)
: > : > open("/dev/uscanner1",2050,027757766774)
: = 7
: > : (0x7)
: > : > write(7,0xbfbfd476,2)
: = 2
: > : (0x2)
: > : >
: > : > If I ctrl-c the process and re-run it enough, it
: will
: > : find the scanner. Once it does, and I try to do a
: > : preview, it will hang as well:
: > : >
: > : > ioctl(3,FIONREAD,0xbfbfdfd8)
: = 0
: > : (0x0)
: > : > poll(0x840f210,0x2,0x0)
: = 0
: > : (0x0)
: > : > open("/dev/uscanner1",2050,027757763660)
: = 6
: > : (0x6)
: > : > write(6,0xbfbfe8a6,2)
: = 2
: > : (0x2)
: > : >
: > : > At this point, if I turn off and on the scanner,
: it
: > : will pop up with a error message, and then be able
: to
: > : do a preview. About 50% of the time when doing
: this
: > : preview, the process will core dump.
: > : >
: > : > writev(0x3,0xbfbfc434,0x1)
: =
: > : 8192 (0x2000)
: > : > writev(0x3,0xbfbfc434,0x1)
: =
: > : 280 (0x118)
: > : > SIGNAL 11
: > : > SIGNAL 11
: > : > Process stopped because of: 16
: > : > process exit, rval = 139
: > : > Segmentation fault (core dumped)
: > : >
: > : > 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 process will
: then
: > : core dump.
: > : >
: > : > Has anyone seen anything like this before? I have
: a
: > : saved core file if that might help anyone.
: > : >
: > : > Advice on where to go from here?
: > : >
: > : > Thanks!
: > : > Jim
: > : >
: > : > _______________________________________________
: > : > Sane-devel mailing list
: > : > Sane-devel@www.mostang.com
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