plustek: Thread: Plustek SANE Problem

greetings,

I installed everything fine, the lamp goes on...

but when I start scanimage, I get following error message:

[plustek] dev_open: can't open /dev/pt_drv as a device
[plustek] attach: open failed: Error during device I/O
scanimage: no SANE devices found               

please help!!!
tia mike :-)


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Michael,

Try this (as root of course):

mknod /dev/pt_drv c 40 0

That will manually create the pt_drv device that it is looking for.

Mark

Michael Graf wrote:
> 
> greetings,
> 
> I installed everything fine, the lamp goes on...
> 
> but when I start scanimage, I get following error message:
> 
> [plustek] dev_open: can't open /dev/pt_drv as a device
> [plustek] attach: open failed: Error during device I/O
> scanimage: no SANE devices found
> 
> please help!!!
> tia mike :-)
> 
> _______________________________________________________________________
> 
> $1 million in prizes! 20 daily instant winners.
> AltaVista Rewards: Click here to win!
> http://shopping.altavista.com/e.sdc?e=3
> 
> _______________________________________________________________________
> 
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Hi,

I'm a Newbye with this. I installed plustek SANE 0.36.16 three days ago
and had exactly the same problem.
I solved mine after reading the HowTo for 0.35 There stood one should
type make in the SANE directory AFTER doing all the stuff in
backend/plustek_driver (thats missing in the install instructions for
0.36)
After setting LD_LIBRARY_PATH a scanimage -L shows the correct scanner.
I also have a problem then. As long as I'm root it's all OK. When I exit
to work as user scanimage -L reports:
device '1' is a Noname PNM file reader virtual device
device '2' is a Noname PNM file reader virtual device
anybody an idea? I tried to set the group of pt_drv to users (it was
root) in the Makefile in backend/plustek_driver.

--
Thanx

Clemens

On Son, 23 Jul 2000, you wrote:
[snip]
> After setting LD_LIBRARY_PATH a scanimage -L shows the correct scanner.
> I also have a problem then. As long as I'm root it's all OK. When I exit
> to work as user scanimage -L reports:
> device '1' is a Noname PNM file reader virtual device
> device '2' is a Noname PNM file reader virtual device
> anybody an idea? I tried to set the group of pt_drv to users (it was
> root) in the Makefile in backend/plustek_driver.
> 

Usually, there's no need to set the group of the device to 
users.

The device should be created like this:
mknod -m 664 /dev/pt_drv c 40 0

That's all for the device-node.

Next problem maybe is a previous sane installation. They usually
create a configuration directory in /etc/sane.d (SuSE) or 
/usr/etc/sane.d (RedHat etc.) Have a look at these directories,
there you'll find a file called dll.conf. Open this one and look
for the plustek device.  If you can't find the string "plustek" inside
the file, add it (see example dll.conf in the backend directory !)

Another thing that might cause some trouble is the LD_LIBRARY_PATH.
If you have configured sane correctly you usually do not need
to setup the LD_LIBRARY_PATH.
So I recommend: Before building and installing sane look for
a previous installation, look for the lib-directory lib/sane.
The default will be /usr/local/lib/sane, but SuSE always seems to use
/usr/lib/sane.

So now we have all info we need to configure sane before compiling:
the previous installation prefix and the system configuration path.
To configure sane on a SuSE, dive into your sane source directory and call
./configure --prefix=/usr --sysconfdir=/etc

on a RedHat or similar distribution, you simply call
./configure (assuming --prefix=/usr/local --sysconfdir=/usr/etc)

then make the whole stuff (as user)
after that call make install (as root)

That's it.
Hope this helps,  if you have further questions, let me know
Gerhard

A big Thank You!

"Jaeger, Gerhard" wrote:

> [snip]
> Next problem maybe is a previous sane installation. They usually
> create a configuration directory in /etc/sane.d (SuSE) or
> /usr/etc/sane.d (RedHat etc.) Have a look at these directories,
> there you'll find a file called dll.conf. Open this one and look
> for the plustek device.  If you can't find the string "plustek" inside
> the file, add it (see example dll.conf in the backend directory !)

You were right, my problem was I had Suse 6.4 and installed in /usr/local
Now I can report my Primax 4800 Direkt works fine.

All my scanned images are in inverted colors. Did I miss a parameter or is
this the way it should be?

--
Clemens

On Mit, 26 Jul 2000, you wrote:
> [snip]
> You were right, my problem was I had Suse 6.4 and installed in /usr/local
> Now I can report my Primax 4800 Direkt works fine.
> 
> All my scanned images are in inverted colors. Did I miss a parameter or is
> this the way it should be?
> 
No this is not the way it should be.
You should append the parameter mov (model override) in your
conf.modules file to the plustek entry

mov=2

This overrides the model fomr OP600 to Primax 4800, then
the colors should be ok.

Gerhard