[sane-devel] plustek & libusb => I/O errors

[Mathis Ahrens]

Hi list,

(please CC me, as I am not subscribed, thanks!)

could anybody with more clue than me *please* help me debug my
issues with a Canon n1220u ??
(with sane-backends-1.0.15 on vanilla 2.6.12)

Short version:
$ scanimage -L
plustek:libusb:002:040' is a Canon N1220U USB flatbed scanner
$ scanimage -T
scanimage: sane_start: Error during device I/O

Debug output follows at the end of this mail. I seem to have some
UIO errors and finally usbDev_open() fails.

So this might be a libusb problem, but I tried different versions,
0.1.10a and 0.1.8 both show the same behaviour.

Any hints how to get more info about what exactly goes wrong here
are highly appreciated!!


Cheers,
Mathis



$ scanimage -L
...
[plustek] usbDev_open(auto,0x04A9-0x2207)
[plustek] Found device at >libusb:002:040<
[plustek] Vendor ID=0x04A9, Product ID=0x2207
[plustek] usbio_DetectLM983x
[plustek] usbio_DetectLM983x: found LM9832/3
[plustek] Detected vendor & product ID: 0x04A9-0x2207
[plustek] Device description for >0x04A9-0x2207< found.
[plustek] usb_initDev(39,0x04a9,-1)
[plustek] Device WAF: 0x00000006
[plustek] Device Flags: 0x00000000
[plustek] Vendor adjusted to: >Canon<
[plustek] LAMP-STATUS: 0x00000000
[plustek] RESETTING REGISTERS(-1)
[plustek] SETTING THE MISC I/Os
[plustek] MISC I/O after RESET: 0x66, 0x16, 0x91
[plustek] UIO error
[plustek] Calibration file-name set to:
[plustek] >/root/.sane/Canon-N1220U.cal<
[plustek] usb_SetScanParameters()
[plustek] UIO error
[plustek] UIO error
[plustek] usbDev_getCaps()
[plustek] Scanner information:
[plustek] Vendor : Canon
[plustek] Model  : N1220U
[plustek] Flags  : 0x00000000
[plustek] drvclose()
[plustek] usbDev_stopScan()
[plustek] usbDev_ScanEnd(), start=0, park=0
[plustek] UIO error
[plustek] usbDev_close()
[plustek] attach: model = >N1220U<
[plustek] sane_get_devices (0xbf8a2878, 0)
device `plustek:libusb:002:040' is a Canon N1220U USB flatbed scanner
[plustek] sane_exit
[plustek] Shutdown called (dev->fd=-1, libusb:002:040)
[plustek] Lamp-Timer stopped

$ scanimage -T
...
[plustek] usbDev_open(auto,0x04A9-0x2207)
[plustek] Found device at >libusb:002:043<
[plustek] Vendor ID=0x04A9, Product ID=0x2207
[plustek] usbio_DetectLM983x
[plustek] usbio_DetectLM983x: found LM9832/3
[plustek] Detected vendor & product ID: 0x04A9-0x2207
[plustek] Device description for >0x04A9-0x2207< found.
[plustek] usb_initDev(39,0x04a9,-1)
[plustek] Device WAF: 0x00000006
[plustek] Device Flags: 0x00000000
[plustek] Vendor adjusted to: >Canon<
[plustek] LAMP-STATUS: 0x00000000
[plustek] RESETTING REGISTERS(-1)
[plustek] SETTING THE MISC I/Os
[plustek] MISC I/O after RESET: 0x66, 0x16, 0x91
[plustek] UIO error
[plustek] Calibration file-name set to:
[plustek] >/root/.sane/Canon-N1220U.cal<
[plustek] usb_SetScanParameters()
[plustek] UIO error
[plustek] UIO error
[plustek] usbDev_getCaps()
[plustek] Scanner information:
[plustek] Vendor : Canon
[plustek] Model  : N1220U
[plustek] Flags  : 0x00000000
[plustek] drvclose()
[plustek] usbDev_stopScan()
[plustek] usbDev_ScanEnd(), start=0, park=0
[plustek] UIO error
[plustek] usbDev_close()
[plustek] attach: model = >N1220U<
[plustek] sane_get_devices (0xbff895a8, 0)
[plustek] sane_open - libusb:002:043
[plustek] Presetting Gamma tables (len=4096)
[plustek] * Channel[0], gamma 2.000
[plustek] * Channel[1], gamma 2.000
[plustek] * Channel[2], gamma 2.000
[plustek] * Channel[3], gamma 2.000
[plustek] ----------------------------------
[plustek] sane_start
[plustek] usbDev_open(libusb:002:043,0x04A9-0x2207)
[plustek] sane_start: open failed: 71
scanimage: sane_start: Error during device I/O
[plustek] sane_cancel
[plustek] sane_close
[plustek] sane_exit
[plustek] Shutdown called (dev->fd=-1, libusb:002:043)
[plustek] Function ignored!