forwarded 422697 [EMAIL PROTECTED] Mark Longair <[EMAIL PROTECTED]> wrote:
Hi Alessandro, > I'm using a USB-attached Epson Perfection 1640SU. It is detected > by sane-find-scanner, but scanimage -L fails. (This used to work > with earlier versions of libsane.) It appears from strace that > the epson2 backend is tried first and this opens the scanner, > performing some operations that cause the USBDEVFS ioctls to > return EBUSY when the epson backend is tried. > > If I remove /etc/sane.d/epson2.conf then scanimage -L detects > the scanner correctly and it works properly. > > You can find a strace of scanimage -L failing to detect the > scanner here: > > http://longair.net/strace-scanimage-fails.txt As you can see in the strace output, the epson2 backend does not release the USB device when exiting (the device is on fd 4, you can see a close() call for fd 3 but nothing for fd 4); as a result, the other backends cannot detect the device (epson, here, in this case). Thanks, JB. -- Julien BLACHE - Debian & GNU/Linux Developer - <[EMAIL PROTECTED]> Public key available on <http://www.jblache.org> - KeyID: F5D6 5169 GPG Fingerprint : 935A 79F1 C8B3 3521 FD62 7CC7 CD61 4FD7 F5D6 5169 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
