[sane-devel] Sane doesn't create a scanner device

[Karl Heinz Kremer]

You need to configure your hotplug system - this will then create the  
scanner device for you once the scanner is connected to the system.  
I'm not familiar with Gentoo, so I don't know how this is done with  
your system.

On Oct 24, 2005, at 6:40 PM, dark_mail at gmx.net wrote:

> I'm using an Epson Stylus Photo RX 420 (scanner-printer-combo) on a
> Gentoo machine (Kernel 2.6.13).
>
> Sane is version 1.0.15 (back- and frontend).
>
> My problem is the following:
>
> sane-find-scanner detects my scanner correctly:
>
> found USB scanner (vendor=0x04b8 [EPSON], product=0x080f [USB MFP]) at
> libusb:001:004
>
> But I don't find a device for the scanner anywhere. I even created a
> /dev/usb/scanner0 by hand, but that didn't help me, either.
>
> I also tried iscan, but it only says that it can't connect to the
> scanner and that I should make sure the scanner is on.
>
> I've also received some strange error messages when attempting to  
> start
> saned by hand:
>
> saned[7350]: saned (AF-indep+IPv6) from sane-backends 1.0.15 ready
> saned[7350]: check_host: getpeername failed: Socket operation on  
> non-socket
> saned[7350]: init: access by host [error] denied
> saned[7350]: quit: exiting
>
> I tried both automatic product/vendor discovery and fixed IDs in
> /etc/sane.d/epson.conf
>
> sane-find-scanner -vv gives me the following output (I skipped the  
> SCSI
> part):
>
>
> searching for USB scanners:
> checking /dev/usb/scanner... failed to open (Invalid argument)
> checking /dev/usb/scanner0... failed to open (Invalid argument)
> checking /dev/usb/scanner1... failed to open (Invalid argument)
> checking /dev/usb/scanner2... failed to open (Invalid argument)
> checking /dev/usb/scanner3... failed to open (Invalid argument)
> checking /dev/usb/scanner4... failed to open (Invalid argument)
> checking /dev/usb/scanner5... failed to open (Invalid argument)
> checking /dev/usb/scanner5... failed to open (Invalid argument)
> checking /dev/usb/scanner7... failed to open (Invalid argument)
> checking /dev/usb/scanner8... failed to open (Invalid argument)
> checking /dev/usb/scanner9... failed to open (Invalid argument)
> checking /dev/usb/scanner10... failed to open (Invalid argument)
> checking /dev/usb/scanner11... failed to open (Invalid argument)
> checking /dev/usb/scanner12... failed to open (Invalid argument)
> checking /dev/usb/scanner13... failed to open (Invalid argument)
> checking /dev/usb/scanner14... failed to open (Invalid argument)
> checking /dev/usb/scanner15... failed to open (Invalid argument)
> checking /dev/usbscanner... failed to open (Invalid argument)
> checking /dev/usbscanner0... failed to open (Invalid argument)
> checking /dev/usbscanner1... failed to open (Invalid argument)
> checking /dev/usbscanner2... failed to open (Invalid argument)
> checking /dev/usbscanner3... failed to open (Invalid argument)
> checking /dev/usbscanner4... failed to open (Invalid argument)
> checking /dev/usbscanner5... failed to open (Invalid argument)
> checking /dev/usbscanner6... failed to open (Invalid argument)
> checking /dev/usbscanner7... failed to open (Invalid argument)
> checking /dev/usbscanner8... failed to open (Invalid argument)
> checking /dev/usbscanner9... failed to open (Invalid argument)
> checking /dev/usbscanner10... failed to open (Invalid argument)
> checking /dev/usbscanner11... failed to open (Invalid argument)
> checking /dev/usbscanner12... failed to open (Invalid argument)
> checking /dev/usbscanner13... failed to open (Invalid argument)
> checking /dev/usbscanner14... failed to open (Invalid argument)
> checking /dev/usbscanner15... failed to open (Invalid argument)
> found USB scanner (vendor=0x04b8 [EPSON], product=0x080f [USB MFP]) at
> libusb:001:004
>
>
> Could anybody give me a hand with this?
>
> The printer part works well with cups, and the kernel even seems to  
> have
> found the built-in card-readers:
>
>
> ohci_hcd 0000:00:02.2: wakeup
> usb 1-1: new full speed USB device using ohci_hcd and address 5
> drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 5  
> if 1
> alt 0 proto 2 vid 0x04B8 pid 0x080F
> scsi3 : SCSI emulation for USB Mass Storage devices
> usb-storage: device found at 5
> usb-storage: waiting for device to settle before scanning
>
> Vendor: EPSON     Model: Stylus Storage    Rev: 1.00
> Type:   Direct-Access                      ANSI SCSI revision: 02
> Attached scsi removable disk sda at scsi3, channel 0, id 0, lun 0
> usb-storage: device scan complete
> scsi.agent[8244]: disk at
> /devices/pci0000:00/0000:00:02.2/usb1/1-1/1-1:1.2/host3/ 
> target3:0:0/3:0:0:0
>
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