[sane-devel] losing hair and sleep over this

[khk at khk.net]

I got your other message about the kernel versions you've tried.
I don't have any experience with the 2.5 kernels, I do however
know that 2.4.19 works, so stick with that for now. Once you've
got the scanner working, you can try the newer kernels.

Which distribution are you using?

Which version of Sane are you using?

Can you please send the output of the following command:
cat /proc/bus/usb/devices

This will show if the USB scanner driver found your scanner.

sane-find-scanner did not locate the scanner, this means that it's
not (yet) a problem with the EPSON backend, there is something else
wrong.

Karl Heinz

> scanners don't work on my system!!!
> i've tried three scanners. two of which were admittedly unsupported, but
> the third of which is supposedly fully supported by sane. they were all
> usb.
> this last one is an epson perfection 640u. here's what happens:
> i plug in the scanner.
> quoth /var/log/messages:
> Oct 28 22:36:49 cobaltdhcpb60 /sbin/hotplug: arguments (usb) env
> (DEVFS=/proc/bus/usb OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin
> ACTION=remove PWD=/etc/hotplug SHLVL=1 HOME=/
> DEVICE=/proc/bus/usb/002/006 PRODUCT=4b8/10c/1 TYPE=255/0/255
> DEBUG=kernel _=/bin/env) Oct 28 22:36:49 cobaltdhcpb60 /sbin/hotplug:
> invoke /etc/hotplug/usb.agent () Oct 28 22:36:53 cobaltdhcpb60 kernel:
> hub.c: new USB device 00:14.3-1.2, assigned address 7 Oct 28 22:36:57
> cobaltdhcpb60 kernel: message.c: usb_control/bulk_msg: timeout Oct 28
> 22:36:58 cobaltdhcpb60 kernel: message.c: error getting string
> descriptor 0 (error=-110) Oct 28 22:36:58 cobaltdhcpb60 kernel:
> Manufacturer: EPSON
> Oct 28 22:36:58 cobaltdhcpb60 kernel: scanner.c: probe_scanner: User
> specified USB scanner -- Vendor:Product - 4b8:10c Oct 28 22:36:58
> cobaltdhcpb60 /sbin/hotplug: arguments (usb) env (DEVFS=/proc/bus/usb
> OLDPWD=/ PATH=/bin:/sbin:/usr/sbin:/usr/bin ACTION=add PWD=/etc/hotplug
> SHLVL=1 HOME=/ DEVICE=/proc/bus/usb/002/007 PRODUCT=4b8/10c/1
> TYPE=255/0/255 DEBUG=kernel _=/bin/env) Oct 28 22:36:58 cobaltdhcpb60
> /sbin/hotplug: invoke /etc/hotplug/usb.agent () Oct 28 22:37:01
> cobaltdhcpb60 /etc/hotplug/usb.agent: Setup scanner for USB product
> 4b8/10c/1
>
> (was that too much?)
> sane-find-scanner replied with:
> 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)
>   # No USB scanners found. If you expected something different, make
> sure that # you have loaded a driver for your USB host controller and
> have installed a # kernel scanner module.
>
> to which lsmod had this to say:
> Module                  Size  Used by    Not tainted
> lp                      8128   0  (autoclean)
> 8139too                19092   1
> mii                     2188   0  [8139too]
> crc32                   1764   1  [8139too]
> ide-scsi                9936   0
> ide-cd                 33896   0
> scanner                11632   0
>
> so, if anyone has any advice, that'd be great.
> if this email is too much, please tell me, and i can abbreviate the
> problem.
>
> thanks a lot,
> noah
> _______________________________________________
> Sane-devel mailing list
> Sane-devel at www.mostang.com
> http://www.mostang.com/mailman/listinfo/sane-devel