[sane-devel] scanimage -unsubscribe
Wed, 05 Nov 2003 13:14:00 -0800
> From: Daniela <email@example.com>
> Date: Wed, 5 Nov 2003 06:30:49 +0000
> To: Henning Meier-Geinitz <firstname.lastname@example.org>,
> Subject: Re: [sane-devel] scanimage -L doesn't work with a supported scanner
> On Tuesday 04 November 2003 19:01, Henning Meier-Geinitz wrote:
>> On Tue, Nov 04, 2003 at 07:17:01PM +0000, Daniela wrote:
>>> I use SANE for the first time. My scanner (CanoScan N650U) can't be
>>> detected by any of the utilities except sane-find-scanner.
>> Please show us the output of sane-find-scanner.
> # No SCSI scanners found. If you expected something different, make sure that
> # you have loaded a SCSI driver for your SCSI adapter.
> found USB scanner (UNKNOWN vendor and product) at device /dev/uscanner0
> # Your USB scanner was detected. It may or may not be supported by
> # SANE. Try scanimage -L and read the backend's manpage.
> # `UNKNOWN vendor and product' means that there seems to be a scanner at this
> # device file but the vendor and product ids couldn't be identified.
> # Currently identification only works with Linux versions >= 2.4.8. You may
> # need to configure your backend manually, see the backend's manpage.
> # Scanners connected to the parallel port or other proprietary ports can't be
> # detected by this program.
> # You may want to run this program as root to find all devices. Once you
> # found the scanner devices, be sure to adjust access permissions as
> # necessary.
> Again, as root it takes very long time, but produces exactly the same message.
>>> It is detected at boot time by the OS (FreeBSD 4.9).
>> You may need libusb. The FreeBSD scanner driver doesn't have the
>> "extended features" of the Linux kernel (asking for USB ids, control
>> messages) so libusb may be needed.
> It should already be active as I need it for my mouse.
>>> When I set the debug level to 128, this is the output:
>>> (I also tried it as root, that gives the same results)
>> Try setting the debug level of the plustek backend:
>> To check what's going on with USB, you can also set
> [plustek] usbDev_open(/dev/uscanner,0x04A9-0x2206)
> [sanei_usb] sanei_usb_open: trying to open device `/dev/uscanner'
> [sanei_usb] sanei_usb_open: can't find device `/dev/uscanner' in list
> [plustek] open failed: -1
> [plustek] sane_get_devices (0xbfbff2fc, 0)
> Here we have the problem, but I have no idea why it failed. There's nothing
> wrong with the device /dev/uscanner.
>>> I might as well have done something wrong, I went through all
>>> documentation I could find, but I don't have a clue.
>>> The odd thing is, when I try it as a normal user it always finishes
>> Probably because the user doesn't have access to some device files but
>> root does.
>>> but as root it took very long time (now it doesn't any more, but I didn't
>>> change the configuration). When I did a "ps ax" at this moment, I saw
>>> that the process was in disk wait state.
>> Maybe it checked some SCSI devices...
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