Hello together, my current system: Debian unstable (with the corresponding sane packages) Kernel 2.6.3 Agfa SnapScan 1236U
With my older Kernel 2.4.x and scanner.o everything went fine. After switching to 2.6.3, xsane and Co. arent able to use the scanner via libusb. Some effects: sane-find-scanner does its job and ALWAYS reports the correct data scanimage -L works ONCE. But it is not able to detect it a second time. Here is the debug output of "SANE_DEBUG_SNAPSCAN=255 scanimage -L" (as root, so no permission problems can occur), started two times: The FIRST time: [sanei_debug] Setting debug level of snapscan to 255. [snapscan] sane_snapscan_init [snapscan] sane_snapscan_init: Snapscan backend version 1.4.35 [snapscan] add_usb_device(libusb:001:010) [snapscan] add_usb_device: Detected (kind of) an USB device [snapscan] snapscani_usb_open(libusb:001:010) [snapscan] add_usb_device: Checking if 0x06bd is a supported USB vendor ID [snapscan] snapscani_check_device() [snapscan] mini_inquiry [snapscan] snapscan_cmd [snapscan] snapscani_usb_cmd(0,0xbfffd730,6,0xbfffd700,0xbfffd6fc (36)) [snapscan] atomic_usb_cmd(0,0xbfffd730,6,0xbfffd700,0xbfffd6fc (36)) [snapscan] usb_cmd(0,0xbfffd730,6,0xbfffd700,0xbfffd6fc (36)) [snapscan] usb_cmd: cmdlen=6, datalen=0 [snapscan] usb_write: writing: 0x12 0x00 0x00 0x00 0x24 0x00 [snapscan] usb_read: reading: 0xf9 0x00 0x00 0x00 0x00 0x00 0x00 0x00 [snapscan] usb_read: reading: 0x06 0x00 0x02 0x02 0x49 0x00 0x00 0x00 0x41 0x47 ... [snapscan] usb_read: reading: 0xfb 0x00 0x00 0x00 0x00 0x00 0x00 0x00 [snapscan] snapscani_check_device: Is vendor "AGFA" model "SNAPSCAN 1236U" a supported scanner? [snapscan] snapscani_get_model_id(SNAPSCAN 1236U, 0, 2) [snapscan] snapscani_get_model_id: looking up scanner for ID 0x06bd,0x0002. [snapscan] snapscani_check_device: Autodetected driver: SnapScan1236 [snapscan] snapscani_usb_close(0) [snapscan] snapscani_init_device_structure() [snapscan] sane_snapscan_get_devices (0xbfffe928, 0) device `snapscan:libusb:001:010' is a AGFA SNAPSCAN 1236U flatbed scanner [snapscan] sane_snapscan_exit * * * The SECOND time: [sanei_debug] Setting debug level of snapscan to 255. [snapscan] sane_snapscan_init [snapscan] sane_snapscan_init: Snapscan backend version 1.4.35 [snapscan] add_usb_device(libusb:001:010) [snapscan] add_usb_device: Detected (kind of) an USB device [snapscan] snapscani_usb_open(libusb:001:010) [snapscan] add_usb_device: Checking if 0x06bd is a supported USB vendor ID [snapscan] snapscani_check_device() [snapscan] mini_inquiry [snapscan] snapscan_cmd [snapscan] snapscani_usb_cmd(0,0xbfffd730,6,0xbfffd700,0xbfffd6fc (36)) [snapscan] atomic_usb_cmd(0,0xbfffd730,6,0xbfffd700,0xbfffd6fc (36)) [snapscan] usb_cmd(0,0xbfffd730,6,0xbfffd700,0xbfffd6fc (36)) [snapscan] usb_cmd: cmdlen=6, datalen=0 [snapscan] usb_write: writing: 0x12 0x00 0x00 0x00 0x24 0x00 /* ... time goes by ... */ [snapscan] usb_read Only 0 bytes read [snapscan] usb_read: reading: 0x32 0x00 0x00 0x00 0xff 0x00 0x00 0x00 [snapscan] mini_inquiry: snapscan_cmd command failed: Error during device I/O [snapscan] snapscani_check_device: mini_inquiry failed with Error during device I/O. [snapscan] snapscani_usb_close(0) [snapscan] sane_snapscan_get_devices (0xbfffe928, 0) No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages). [snapscan] sane_snapscan_exit * * * I read of some similar problems on this mailing list, but they werent exactly the same or it was a different model. Maybe its a more general problem, so I posted it here. It would be very nice, if someone already had a solution what to do ... Sincerely Daniel Winkler
