Hi, Thanks for your reply.
Please find bellow all steps I made : * dmesg or syslog doesn't provide anything usefull (nothing) when I run the scanimage command. * My system as the latest kernel, I've also tried kernel 2.6.38 from debian backports. * I've updated my HP computer with the latest BIOS version : about this, just after the update, I was able to scan, but scanner detection was very slow (about 30 seconds until the scanner starts, normaly it starts immediately). But strange now, it's not working anymore. * Since BIOS update, debug scanimage give a "error obtaining child information: Inappropriate ioctl for device". * I've tried of course other usb port. * I've connected USB hard drive, USB keyboard and USB UPS, and all is working fine. If this can help you, I can give you an access on the computer on SSH (with a live CD and or Debian installed from scratch). Thanks Olivier.
