[sane-devel] Fwd: umax1220u: sane_start: Invalid argument

[m. allan noah]

well, it appears that the backend does not set default values for the
width and height (-x and -y)

so, in order to make a scan, you must specify them.

scanimage -x 210 -y 297 > image.pnm

allan

On Thu, Dec 18, 2008 at 10:41 AM, D. Hugh Redelmeier <hugh at mimosa.com> wrote:
> | From: m. allan noah <kitno455 at gmail.com>
>
> | On Wed, Dec 17, 2008 at 10:23 PM, D. Hugh Redelmeier <hugh at mimosa.com> wrote:
>
> | > [umax1220u] sane_start
> | > [umax1220u] UMAX_set_scan_parameters:
> | > [umax1220u] color = 1
> | > [umax1220u] xo    = 0, yo     = 0
> | > [umax1220u] w     = 0, h      = 0
> | > [umax1220u] xres  = 75, yres   = 75
> | > [umax1220u] left  = 0, top    = 0
> | > [umax1220u] right = 0, bottom = 0
> | > scanimage: sane_start: Invalid argument
> | > [umax1220u] sane_cancel: handle = 0x692080
> | > [umax1220u] sane_cancel: canceling is unsupported in this backend
> | > [umax1220u] sane_close
> | > [umax1220u] UMAX_close_device:
> | > [umax1220u] sane_exit
> | >
> |
> | yes- it appears odd that all of those values are 0. what is the output of
> |
> | scanimage --help
>
> Here it is.  I removed the part that does not depend on the device.
> Note that the USB numbering may be different since I've been moving
> the device between machines.
>
>    Options specific to device `umax1220u:libusb:003:002':
>        --resolution auto||75|150|300|600dpi [75]
>            Sets the resolution of the scanned image.
>        --gray[=(yes|no)] [no]
>            Do a grayscale rather than color scan
>        -l 0..228.6mm [0]
>            Top-left x position of scan area.
>        -t 0..298.027mm [0]
>            Top-left y position of scan area.
>        -x 0..228.6mm [0]
>            Width of scan-area.
>        -y 0..298.027mm [0]
>            Height of scan-area.
>        --lamp-off
>            Turn off scanner lamp
>
>    Type ``scanimage --help -d DEVICE'' to get list of all options for DEVICE.
>
>    List of available devices:
>        umax1220u:libusb:003:002
>
> --
> sane-devel mailing list: sane-devel at lists.alioth.debian.org
> http://lists.alioth.debian.org/mailman/listinfo/sane-devel
> Unsubscribe: Send mail with subject "unsubscribe your_password"
>             to sane-devel-request at lists.alioth.debian.org
>



-- 
"The truth is an offense, but not a sin"