[sane-devel] MFP - Samsung SCX-4521F

[Heiko Freundel]

abel deuring schrieb:
> Heiko Freundel wrote:
>
>   
>> It should work like this and the printer does.
>>
>> Ubuntu already installed Sane 1.0.14-1.
>>
>> I tried different things I found, like:
>> http://www.elijahlofgren.com/ubuntu/#scx-4521f
>> with no success.
>>
>> Trying to start xsane from shell shows the following message:
>> insmod: can't read
>> '/lib/modules/2.6.17-10-generic/kernel/drivers/mfpportctrl/mfpport.ko':
>> No such file or directory
>> Segmentation fault (core dumped)
>>
>>
>> When I start the Samsung Unified Driver Configurator (which installs
>> itself) and then click the scanner button, it closes, with the messages
>> below.
>>
>> ~$ /opt/Samsung/mfp/bin/Configurator
>> insmod: can't read
>> '/lib/modules/2.6.17-10-generic/kernel/drivers/mfpportctrl/mfpport.ko':
>> No such file or directory
>> *** glibc detected *** /opt/Samsung/mfp/bin/Configurator: double free or
>> corruption (!prev): 0x081c1258 ***
>> ======= Backtrace: =========
>> /lib/tls/i686/cmov/libc.so.6[0xb74ad8bd]
>> /lib/tls/i686/cmov/libc.so.6(__libc_free+0x84)[0xb74ada44]
>> /usr/lib/libstdc++-libc6.2-2.so.3(__builtin_vec_delete+0x24)[0xb6baa464]
>> /usr/lib/sane/libsane-samsung_scx4x21.so.1(init_mfp_port_control__4port+0x7f)[0xb6a6c62b]
>> /usr/lib/sane/libsane-samsung_scx4x21.so.1(init_mfp_port_control__6device+0x16)[0xb6a6d11e]
>> ...
>>
>> But I don't know, whether I need mfpport.ko or where I get it from.
>>     
>
> grepping through the kernel sources for the word "mfpport" gives no
> result.
no results
> Neither are there any files with a name that matches
> *mfpport*.
no there are no files
> But if you ask google for "mfpport.ko", you'll get a lot
> of error reports, often in conjunction with Samsung devices, but no
> hint for useful patches, at least on the first 5 result pages.
Yes, there are many questions, but no helpful answers.
> This
> is an indication that mfpport.ko is a Samsung-specific kernel
> module, for which no source code is available. You could try to find
> this file somewhere in the Samsung driver package, and try to load
> it manually, but if there is any incompatibility with the Ubuntu
> kernel, this will not work.
>   
It is not in, there is just an libMFPPortPlugin.so
>   
>> Samsung told me, the driver was not testet with Ubuntu.
>>     
>
> ...which they should state clearly on their website, in README files
> and in other places where people might check, if a device is
> supported under a specific operating system. Binary-only kernel
> modules are a really bad idea.
>   
You are right. Now I found it in the user manual. Who reads an user
manual BEFORE buying an product. Even if they right something from linux
support.  They just support Redhat, Mandrake, SuSe, Caldera, TurboLinux,
Slackware.
> And we (the Sane project) should tell more clearly in the *desc
> files for external backends, if source code is available (at least
> partially), if the backend works only under Linux, or even only with
> very specific kernel versions...
>   
Maybe it's an stuppid question, but: If the Samsung-drivers work with
the above mentioned distributions, isn't then the source code
available?  I just phoned to Samsung, there I can't anticipate any help.**
> Abel
>   
Thanks for your help
Heiko