[sane-devel] Still problems with Epson Perfection 3490 Photo

[Gerard Klaver]

On Sun, 2006-11-19 at 07:25 +0100, Jurgen Defurne wrote:
> On Thu, Nov 16, 2006 at 08:19:19AM +0900, Olaf Meeuwissen wrote:
> > jurgen.defurne at pandora.be (Jurgen Defurne) writes:
> > 
> > > I followed the instructions I found here (http://ubuntuforums.org/showthread.php?t=108256), which gave a little bit more information about setting up udev.
> > >
> > > I got some better activity and feedback, from this command :
> > >
> > > SANE_DEBUG_SNAPSCAN=255 scanimage -L
> > >
> > > However, it hangs at sane_snapscan_get_devices, with the following
> > > output from the process :
> > >
> > > [snapscan] atomic_usb_cmd(0,0xbfea70ce,6,0x0,0x0 (0))
> > > [snapscan] usb_cmd(0,0xbfea70ce,6,0x0,0x0 (0))
> > > [snapscan] usb_cmd: cmdlen=6, datalen=0
> > > [snapscan] usb_write: writing:  0x00 0x00 0x00 0x00 0x00 0x00
> > > [snapscan] Written 6 bytes
> > > [snapscan] usb_read: reading:  0xfb 0x00 0x00 0x00 0x00 0x00 0x00 0x00
> > > [snapscan] Read 8 bytes
> > > [snapscan] 2nd read 4 write 2
> > > [snapscan] snapscani_init_device_structure()
> > > [snapscan] sane_snapscan_get_devices (0xbfea8298, 0)
> > >
> > > and after some time the process starts to take up 100% CPU.
> > >
> > > What I want to know is if the snapscan backend on its own is enough to
> > > drive the scanner, or do I always need the iscan shared libraries from
> > > the Avasys website, and if yes, what is the best place to install them ?
> > 
> > You need a firmware file (esfw52.bin).
> > 
> > As for the iscan shared libraries (I assume you're talking about
> > iscan-plugin-gt-f520-1.0.0-1.c2.i386.rpm) are only used by the epkowa
> > backend.  The snapscan backend does not use them.  The epkowa backend
> > is available in the iscan package/source.
> > 
> > Hope this helps,
> > -- 
> > Olaf Meeuwissen                          EPSON AVASYS Corporation, SE1
> > FSF Associate Member #1962           sign up at http://member.fsf.org/
> > GnuPG key: 6BE37D90/AB6B 0D1F 99E7 1BF5 EB97  976A 16C7 F27D 6BE3 7D90
> > Penguin's lib!       -- I hack, therefore I am --               LPIC-2
> 
> I already got the firmware, I added it to the snapscan.conf file. I
> suppose this is what makes the scanner tick, ie. the software which
> controls the device on-board.
> 
> When using this command :
> 
>  SANE_DEBUG_SNAPSCAN=255 SANE_DEBUG_SANEI_USB=255 scanimage -L
> 
> I see that the system does not hang on the scanner detection, but on
> the USB detection.
> 
> Here are the last 20 lines of the output.
> 
> [sanei_debug] Setting debug level of sanei_usb to 255.
> [sanei_usb] sanei_usb_init: Looking for kernel scanner devices
> [sanei_usb] sanei_usb_init: can't stat /dev/usb/: No such file or
> directory
> [sanei_usb] sanei_usb_init: Looking for libusb devices
> usb_os_init: Found USB VFS at /dev/bus/usb
> usb_set_debug: Setting debugging level to 255 (on)
> [sanei_usb] sanei_usb_init: found libusb device (0x04b8/0x0122)
> interface 0  at libusb:004:002
> [sanei_usb] sanei_usb_init: device 0x0000/0x0000 looks like a root hub
> [sanei_usb] sanei_usb_init: device 0x0000/0x0000 looks like a root hub
> [sanei_usb] sanei_usb_init: device 0x0000/0x0000 looks like a root hub
> [sanei_usb] sanei_usb_init: device 0x0000/0x0000 looks like a root hub
> [sanei_usb] sanei_usb_init: found 1 devices
> [sanei_usb] sanei_usb_find_devices: vendor=0x03f0, product=0x0000
> [sanei_usb] sanei_usb_find_devices: vendor=0x03f0, product=0x2205
> [sanei_usb] sanei_usb_find_devices: vendor=0x03f0, product=0x2005
> [sanei_usb] sanei_usb_find_devices: vendor=0x03f0, product=0x2005
> [sanei_usb] sanei_usb_find_devices: vendor=0x03f0, product=0x0705
> [sanei_usb] sanei_usb_find_devices: vendor=0x03f0, product=0x0805
> 
> I have tried using gdb to attach to the process, which works, but
> since there is no symbolic information, I am unable to get any output
> which may help.
> 
> I suppose, since it hangs at the last line, that I have a problem with
> a product from vendor 0x3f0, product 0x0805. Is there somewhere an
> index where I can lookup these codes ?
> 
> Regards,
> 
> Jurgen
> 
One way is using the Sane search page

http://www.sane-project.org/cgi-bin/driver.pl?manu=&model=&bus=any&v=03f0&p=0805

Last line from the   hp_rts88xx   backend.

In /etc/sane.d/dll.conf you can disable the not used backends by placing
a # before each backendname, maybe that will help.
-- 
--------
m.vr.gr.
Gerard Klaver