Q: xsane says "device busy", scanimage works fine

From: Reece Hart (reece@in-machina.com)
Date: Thu Apr 19 2001 - 19:23:34 PDT

  • Next message: Ulrich Deiters: "Re: ./configure xsane is failing?"

    Cheers. I'm a sane/xsane newbie with a problem. Any
    advice/solutions/things to try will be welcomed.

    Thanks,
    Reece

    The problem
    -----------
    scanimage works fine (great, in fact), but xscanimage and xsane both claim
    that the scanner is busy.

    The environment
    ---------------
      RedHat 7.1
      sane, xsane installed from sources, NOT rpms
      sane-backends & -frontends 1.0.4
      xsane-0.75
      epson 1240U photo via usb

    Sample invocations and output
    -----------------------------
    $ scanimage -L
    device `epson:/dev/usbscanner' is a Epson Perfection1240 flatbed scanner

    $ scanimage --format=tiff >image.tiff
    (no problems)

    $ xscanimage
    [xscanimage] No scanners were identified...

    $ xscanimage epson:/dev/usbscanner
    (dialog says "Failed to open device `epson:/dev/usbscanner': Device busy.")

    $ xsane
    (dialog says "xsane: no devices available")

    $ xsane epson:/dev/usbscanner
    (dialog says "Failed to open device `epson:/dev/usbscanner': Device busy."
    just like xscan image)

    What I've tried and other info
    ------------------------------
    * I've verified that there are no other versions of sane or xsane around

    * I've pored over READMEs, FAQs, etc.

    * DEBUG flags:
    $ SANE_DEBUG_DLL=255 SANE_DEBUG_V4L=255 SANE_DEBUG_EPSON=255 \
      /usr/local/bin/xsane epson:/dev/usbscanner
    [sanei_debug] Setting debug level of v4l to 255.
    [v4l] sane_init: failed to open device `/dev/bttv0'
    [v4l] sane_init: failed to open device `/dev/video0'
    [v4l] sane_init: failed to open device `/dev/video1'
    [v4l] sane_init: failed to open device `/dev/video2'
    [v4l] sane_init: failed to open device `/dev/video3'
    [v4l] open(epson:/dev/usbscanner)
               ^^^^^^^^^^^^^^^^^^^^^
    Hmm, that's suspicious. Is that trying to open a filed called
    `epson:/dev/usbscanner'?

    * strace:
    $ ( strace /usr/local/bin/xsane epson:/dev/usbscanner ) >log 2>&1
    And log says:
      execve("/usr/local/bin/xsane", ["/usr/local/bin/xsane", "epson:/dev/usbscanner"], [/* 72 vars */]) = 0
      [snip]
      open("epson:/dev/usbscanner", O_RDWR) = -1 ENOENT (No such file or directory)
            ^^^^^^^^^^^^^^^^^^^^^
    Indeed, it's trying to open this literally.
    (As a trick, I tried symlinking `./epson:usbscanner' to this, but no luck)

    * libraries:
    $ ldd /usr/local/bin/xsane
            libsane.so.1 => /usr/local/lib/sane/libsane.so.1 (0x40024000)
            libnsl.so.1 => /lib/libnsl.so.1 (0x4002a000)
            libm.so.6 => /lib/i686/libm.so.6 (0x40041000)
            libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0x40065000)
            libgimpui-1.2.so.0 => /usr/lib/libgimpui-1.2.so.0 (0x40084000)
            libgimp-1.2.so.0 => /usr/lib/libgimp-1.2.so.0 (0x400aa000)
            libgtk-1.2.so.0 => /usr/lib/libgtk-1.2.so.0 (0x400c9000)
            libgdk-1.2.so.0 => /usr/lib/libgdk-1.2.so.0 (0x401ff000)
            libgmodule-1.2.so.0 => /usr/lib/libgmodule-1.2.so.0 (0x40235000)
            libglib-1.2.so.0 => /usr/lib/libglib-1.2.so.0 (0x40238000)
            libdl.so.2 => /lib/libdl.so.2 (0x4025d000)
            libXi.so.6 => /usr/X11R6/lib/libXi.so.6 (0x40261000)
            libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x40269000)
            libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x40277000)
            libpng.so.2 => /usr/lib/libpng.so.2 (0x40357000)
            libtiff.so.3 => /usr/lib/libtiff.so.3 (0x40379000)
            libz.so.1 => /usr/lib/libz.so.1 (0x403bc000)
            libc.so.6 => /lib/i686/libc.so.6 (0x403ca000)
            /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)

    -- 
    Reece Hart, http://www.in-machina.com/~reece/, PGP:0xD178AAF9
    

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