Thanks Mattias for the information about the error and
the link to the AppleDev page.
I could now use some direction about what needs to be
done to get things fixed. I have checked the scanner
to make sure it works, checked the USB cable. I have
uninstalled and reinstalled both the SANE, Twain
interface, and the needed libraries. I have
Uninstalled the Epson Scanner Utilities and
reinstalled. I have tried both applications installed.
I still get the same errors.
I am at a loss also, as to why for weeks there were no
issues. Nothing had change on the system. The system
is in a controlled enviroment.
Thanks again for your help.
Brandon
Here is a snippet of the log:
scanimage: reading one scanline, 7656 bytes...
[sanei_usb] sanei_usb_write_bulk: trying to write 10
bytes
usb_bulk_write: ep addr = 0x02
Converting ep address to pipeRef.
ep_to_pipeRef: an error occurred getting pipe
information on pipe 1
USB error: ep_to_pipeRef(GetPipeProperties): no
connection to an IOService
USB error: usb_bulk_write: invalid pipe reference
[sanei_usb] sanei_usb_write_bulk: write failed: No
such file or directory
Converting ep address to pipeRef.
ep_to_pipeRef: interface is 305490
USB error: ep_to_pipeRef: can't get number of
endpoints for interface
USB error: usb_clear_halt(ClearPipeStall): no
connection to an IOService
FAIL No data
--- Mattias Ellert <mattias.ellert at tsl.uu.se> wrote:
> Brandon Carpenter wrote:
>
> >>scanimage > /scanIn/test.tif
> >
> > Ep_to_piperef: Error occured getting pipe
> information
> > on pipe 1
> >
> > Does anyone have an idea what this means?
> >
> > Brandon Carpenter
>
> This error is from libusb.
>
> ret =
>
(*(device->interface))->GetPipeProperties(device->interface,
>
> i, &direction, &number,
> &dont_care1, &dont_care2, &dont_care3);
>
> if (ret != kIOReturnSuccess) {
> fprintf (stderr, "ep_to_pipeRef: an error
> occurred getting pipe
> information on pipe %d\n",
> i );
> USB_ERROR_STR(-darwin_to_errno(ret),
> "ep_to_pipeRef(GetPipeProperties): %s",
> darwin_error_str(ret));
> }
>
> The documentation says the following about
> GetPipeProperties:
>
>
http://developer.apple.com/documentation/Darwin/Reference/IOKit/IOUSBLib/Classes/IOUSBInterfaceInterface197/Functions/Functions.html#GetPipeProperties
>
> function result
> Returns kIOReturnSuccess if successful,
> kIOReturnNoDevice if there is no
> connection to an IOService, or
> kIOReturnNotOpen if the interface is not
> open for exclusive
> access.
>
> If you set SANE_DEBUG_SANEI_USB to 5 or greater when
> running scanimage
> you should get an additional error message saying
> either of the following:
>
> ep_to_pipeRef(GetPipeProperties): no connection to
> an IOService
> ep_to_pipeRef(GetPipeProperties): device not opened
> for exclusive access
>
> Mattias
>
>
> --
>
________________________________________________________________________
>
> mattias.ellert at tsl.uu.se
> tel: +46 18 471 32 58
> http://www.tsl.uu.se/~ellert/
> fax: +46 18 471 35 13
>
________________________________________________________________________
>
__________________________________
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