[sane-devel] libsane-imagescan.so.1' (No such file or directory)

[ToddAndMargo]

On 02/17/2018 04:47 AM, Olaf Meeuwissen wrote:
> Hi,
> 
> ToddAndMargo writes:
> 
>> Hi All,
>>
>> found 0 devices
>>
>> What is this all about?
> 
> How are we supposed to know?  

But, but, but, I thought you knew all and see all!!!
I should have put the question at the bottom of the post,
instead of the top.


> What did you do?  What did you expect to
> happen?  What happened?

I was unable to scan with saned.  I posted a link
to the full error log below.

> Please provide details.  We weren't shoulder-surfing at your place when
> this happened and we have neither extra-sensory perception capabilities
> nor crystal balls.

If you look at the bug report posted below, the two
attachments give tons of details.

>> Fedora 26 x 64
>> Xfce 4.12
>>
>> sane-backends-1.0.27-9.fc27.x86_64
>> sane-backends-drivers-scanners-1.0.27-9.fc27.x86_64
>> sane-backends-drivers-cameras-1.0.27-9.fc27.i686
>> sane-backends-libs-1.0.27-9.fc27.i686
>> sane-backends-daemon-1.0.27-9.fc27.x86_64
>> sane-backends-drivers-scanners-1.0.27-9.fc27.i686
>> sane-backends-libs-1.0.27-9.fc27.x86_64
>> sane-backends-drivers-cameras-1.0.27-9.fc27.x86_64
>>
>> I am trying to get xsane to work with systemd and saned.  When I run
>>       $ xsane net:localhost
>>
>> I get the following error pop up:
>>      Error: Failed to open device `net:localhost': Error during device I/0
>>
>> In saned at .service, I have debug set to the following:
>> Environment=SANE_CONFIG_DIR=/etc/sane.d SANE_DEBUG_DLL=255
>> SANE_DEBUG_BJNP=5
>> SANE_DEBUG_NET=128
>>
>> And this error pops up in my debug log:
>> # journalctl -efx -t saned > saned.log.txt
>>
>>      996: 032]: [dll] load: searching backend `imagescan' in
>> `/usr/lib64/sane'
>> Feb 17 02:59:12 rn4.rent-a-nerd.local saned[4032]: [dll] load: trying to
>> load `/usr/lib64/sane/libsane-imagescan.so.1'
>>      Feb 17 02:59:12 rn4.rent-a-nerd.local saned[4032]: [dll] load:
>> couldn't open `/usr/lib64/sane/libsane-imagescan.so.1' (No such file or
>> directory)
>>      Feb 17 02:59:12 rn4.rent-a-nerd.local saned[4032]: [dll] load:
>> couldn't find backend `imagescan' (No such file or directory)
>>      Feb 17 02:59:12 rn4.rent-a-nerd.local saned[4032]: [dll]
>> sane_get_devices: found 0 devices
>>      Feb 17 02:59:14 rn4.rent-a-nerd.local saned[4032]: saned exiting
> 
> The dll backend not being able to load a backend should not prevent
> saned from detect locally connected devices at large.  Looks like you
> expect to find a device supported by the pixma backend.  If that's the
> case, you may safely remove/purge any imagescan package that you seem to
> have picked up from who knows where (EPSON's download site, perhaps?).
> 
> Hope this helps,


Hi Olaf,

Where did you see pixma being call out?  Maybe???

Here is some more detailed information:

My scanner is an Epson Perfection V300

I installed iscan-gt-f720-bundle-1.0.1.x64.rpm from

https://epson.com/Support/Scanners/Perfection-Series/Epson-Perfection-V19-Photo/s/SPT_B11B231201?review-filter=Linux

I am able to scan with both xsane and simple-scan, which
both use the front end.

I am not able to scan from the back end using saned
with either "xsane net:localhost" or PDF Studio,
which only uses saned.

I am able to manually start saned and scan with
PDF Studio and "xsane net:localhost".  Well, some
of the time.

An unlimited trial of PDF Studio can be downloaded from
https://www.qoppa.com/pdfstudio/

 From the error log, it looks like saned tried to contact
the scanners three times and failed because it could not
find libsane-imagescan.so.1

For the full error log, see
https://bugzilla.redhat.com/show_bug.cgi?id=1546433

Error log: https://bugzilla.redhat.com/attachment.cgi?id=1397367
configuration: https://bugzilla.redhat.com/attachment.cgi?id=1397368

-T