On 22/10/2014 23:47, Paul Menzel wrote:
Dear SANE developers,


using Debian Sid/unstable with libsane 1.0.24-3, XSane and Simple Scan
both crash with a arithmetic exception when doing a preview scan or
scan.

         Program received signal SIGFPE, Arithmetic exception.
         0xb552ae6c in gl124_led_calibration (dev=0x8207a08) at 
genesys_gl124.c:3143
         3143   genesys_gl124.c: Datei oder Verzeichnis nicht gefunden.

Please find the backtrace pasted at the end.


Thanks,

Paul


    Hello,

if all calibration scans are black, there could be a division by zero. Could you provide log and debug files (several *.pnm files) created when backend is ran with debug traces by exporting these environment variables:
export SANE_DEBUG_GENESYS=255
export SANE_DEBUG_GENESYS_LOW=255
export SANE_DEBUG_GENESYS_GL124=255

    Regards,
        Stef

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