plustek: Thread: problem with Plustek 9636T/12000T parallel port scanner

Hi,

I installed sane-backends-1.0.14-r2
with scanimage -L my scanner is detected
device `plustek_pp:parport0' is a Plustek 
9636T/12000T parallel port flatbed scanner
When i launch xsane-0.93, and try to get a preview 
from my scanner, i get " scanner failed ; invalid 
argument"
What can i do ?
Thank you for your help.

Sincerely,

-- 
Jacques

Hi,

please send us the output of:
export SANE_DEBUG_PLUSTEK_PP=20 ; scanimage -L

Ciao,
  Gerhard

On Thursday 01 July 2004 15:17, Jacques Montier wrote:
> Hi,
>
> I installed sane-backends-1.0.14-r2
> with scanimage -L my scanner is detected
> device `plustek_pp:parport0' is a Plustek
> 9636T/12000T parallel port flatbed scanner
> When i launch xsane-0.93, and try to get a preview
> from my scanner, i get " scanner failed ; invalid
> argument"
> What can i do ?
> Thank you for your help.
>
> Sincerely,

Please use the mailing list!

The output looks good - no problems, can you please retry with xsane:
export SANE_DEBUG_PLUSTEK_PP=20 ; xsane

Ciao,
  Gerhard

On Thursday 01 July 2004 15:49, Jacques Montier wrote:
> Her it is :
>
> [sanei_debug] Setting debug level of plustek_pp to 20.
> [plustek_pp] PlustekPP backend V0.01-8, part of
> sane-backends 1.0.14
> [plustek_pp] ># Plustek-PP SANE Backend
> configuration file<
> [plustek_pp] ># For use with Plustek parallel-port
> scanners<
> [plustek_pp] >#<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># user either [direct] or [kernel]
> to access the scanner<
> [plustek_pp] ># when using [kernel], device
> specifies the device-node, which is created<
> [plustek_pp] ># by the kernel-module loader
> (applies only to Linux)<
> [plustek_pp] ># when using [direct], device is
> used to set the parallel-port base address<
> [plustek_pp] ># or a device-name suitable for
> libieee1284, i.e. parport0<
> [plustek_pp] >#<
> [plustek_pp] >[direct]<
> [plustek_pp] >device 0x378<
> [plustek_pp] Decoding device name >0x378<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># leave the default values as
> specified in /etc/modules.conf<
> [plustek_pp] >#<
> [plustek_pp] >option warmup    -1<
> [plustek_pp] Decoding option >warmup<
> [plustek_pp] >option lOffOnEnd -1<
> [plustek_pp] Decoding option >lOffOnEnd<
> [plustek_pp] >option lampOff   -1<
> [plustek_pp] Decoding option >lampOff<
> [plustek_pp] ><
> [plustek_pp] ># model override switch, mostly for
> cosmetic changes, if the autodetection<
> [plustek_pp] ># does not work or could not work
> correctly<
> [plustek_pp] >#option mov 7<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># example for accessing the scanner
> via libieee1284<
> [plustek_pp] >#<
> [plustek_pp] >[direct]<
> [plustek_pp] attach (0x378, 0xb9f90450, (nil))
> [plustek_pp] Device configuration:
> [plustek_pp] device name   : >0x378<
> [plustek_pp] direct I/O    : yes
> [plustek_pp] warmup        : -1s
> [plustek_pp] lampOff       : -1
> [plustek_pp] lampOffOnEnd  : yes
> [plustek_pp] model override: 0
> [plustek_pp] ---------------------
> [plustek_pp] drvopen()
> [plustek_pp] open: PtDrvInit failed: 4
> [plustek_pp] open failed: -1
> [plustek_pp] >device parport0<
> [plustek_pp] Decoding device name >parport0<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># example for accessing the scanner
> via the kernel module<
> [plustek_pp] >#<
> [plustek_pp] >#[kernel]<
> [plustek_pp] >#device /dev/pt_drv<
> [plustek_pp] >#<
> [plustek_pp] >#option warmup    -1<
> [plustek_pp] >#option lOffOnEnd -1<
> [plustek_pp] >#option lampOff   -1<
> [plustek_pp] attach (parport0, 0xb9f90450, (nil))
> [plustek_pp] Device configuration:
> [plustek_pp] device name   : >parport0<
> [plustek_pp] direct I/O    : yes
> [plustek_pp] warmup        : -1s
> [plustek_pp] lampOff       : -1
> [plustek_pp] lampOffOnEnd  : yes
> [plustek_pp] model override: 0
> [plustek_pp] ---------------------
> [plustek_pp] drvopen()
> [plustek_pp] ptdrvInit(0)
> [plustek_pp] Init settings done
> [plustek_pp] ScanData = 0x08063b40
> [plustek_pp] Assigning port handle 0
> [plustek_pp] ptdrvOpen(port=0x0)
> [plustek_pp] Try to claim the parport
> [plustek_pp] Setting SPP-mode
> [plustek_pp] Setting PS/2-mode
> [plustek_pp] We're using libIEEE1284 I/O
> [plustek_pp] Starting Scanner-Autodetection
> [plustek_pp] ************ DETECTP48xx ************
> [plustek_pp] ModelSet4800()
> [plustek_pp] modelInitPageSettings()
> [plustek_pp] A4 set
> [plustek_pp] ModelSet4800() done.
> [plustek_pp] P48xxInitAsic()
> [plustek_pp] DacInitialize()
> [plustek_pp] ImageInitialize()
> [plustek_pp] IOFuncInitialize()
> [plustek_pp] IOInitialize()
> [plustek_pp] * using readfunction >fnBiDirRead<
> [plustek_pp] MotorInitialize()
> [plustek_pp] ResetPort()
> [plustek_pp] Test 0x55
> [plustek_pp] Test 0xAA
> [plustek_pp] Compare data=0x40 and status=0x50,
> port=0x0
> [plustek_pp] p48xxReadWriteTest()
> [plustek_pp] Can't find your model, asic = 0x5a
> [plustek_pp] detectScannerConnection() returns -9031.
> [plustek_pp] ************* ASIC9800x *************
> [plustek_pp] ResetPort()
> [plustek_pp] IOInitialize()
> [plustek_pp] * using readfunction >fnBiDirRead<
> [plustek_pp] ASIC = 0x81
> [plustek_pp] ************* ASIC98001 *************
> [plustek_pp] ModelSet9636()
> [plustek_pp] ModelSet9360()
> [plustek_pp] modelInitPageSettings()
> [plustek_pp] A4 set
> [plustek_pp] ModelSet9630() done.
> [plustek_pp] modelInitPageSettings()
> [plustek_pp] A4 set
> [plustek_pp] ModelSet9636() done.
> [plustek_pp] P9636InitAsic()
> [plustek_pp] DacInitialize()
> [plustek_pp] ImageInitialize()
> [plustek_pp] IOFuncInitialize()
> [plustek_pp] IOInitialize()
> [plustek_pp] * using readfunction >fnBiDirRead<
> [plustek_pp] MotorInitialize()
> [plustek_pp] 0x81
> [plustek_pp] CCID = 0x00
> [plustek_pp] P9636InitAsic() done.
> [plustek_pp] ResetPort()
> [plustek_pp] Test 0x55
> [plustek_pp] Test 0xAA
> [plustek_pp] Compare data=0x40 and status=0x10,
> port=0x0
> [plustek_pp] ioP98ReadWriteTest()
> [plustek_pp] Putting Scanner (ASIC 98001) into
> Idle-Mode
> [plustek_pp] detectScannerConnection() returns 0.
> [plustek_pp] p9636InitP98001(0)
> [plustek_pp] bData = 0x0000, PCB-ID = 0x00
> [plustek_pp] CCD-ID = 0x00 = _CCD_3797
> [plustek_pp] bSetScanModeFlag = 0
> [plustek_pp] *** setupBuffers ***
> [plustek_pp] Driverbuf(147360 bytes) needed !
> [plustek_pp] pColorRunTab = 0x453f2534 - 0x453f1fa8
> [plustek_pp] Adjust for 98001 ASIC
> [plustek_pp] sb2 = 0x453ce008, sb1 = 0x453d8be8,
> Color = 0x453e8db8
> [plustek_pp] Pro = 0x453ee3a8, size = 147360
> [plustek_pp] *** DETECTION DONE, result: 0 ***
> [plustek_pp] Switching lamp 0 on.
> [plustek_pp] ptdrvClose()
> [plustek_pp] *** cleanup buffers ***
> [plustek_pp] MiscRestorePort()
> [plustek_pp] Releasing parport
> [plustek_pp] MiscGetModelName - id = 15
> [plustek_pp] pt_drv0: 9636T/12000T found
> [plustek_pp] pt_drv0: Lamp-Timer set to 180 seconds.
> [plustek_pp] pt_drv0: WarmUp period set to 30 seconds.
> [plustek_pp] pt_drv0: Lamp untouched on driver unload.
> [plustek_pp] Lamp-Timer started!
> [plustek_pp] ioctl(_PTDRV_OPEN_DEVICE)
> [plustek_pp] Lamp-Timer stopped!
> [plustek_pp] Init settings done
> [plustek_pp] ptdrvOpen(port=0x0)
> [plustek_pp] Try to claim the parport
> [plustek_pp] Setting SPP-mode
> [plustek_pp] Setting PS/2-mode
> [plustek_pp] We're using libIEEE1284 I/O
> [plustek_pp] Starting Scanner-detection (ASIC 98001)
> [plustek_pp] ************* ASIC98001 *************
> [plustek_pp] ModelSet9636()
> [plustek_pp] ModelSet9360()
> [plustek_pp] modelInitPageSettings()
> [plustek_pp] A4 set
> [plustek_pp] ModelSet9630() done.
> [plustek_pp] modelInitPageSettings()
> [plustek_pp] A4 set
> [plustek_pp] ModelSet9636() done.
> [plustek_pp] P9636InitAsic()
> [plustek_pp] DacInitialize()
> [plustek_pp] ImageInitialize()
> [plustek_pp] IOFuncInitialize()
> [plustek_pp] IOInitialize()
> [plustek_pp] * using readfunction >fnBiDirRead<
> [plustek_pp] MotorInitialize()
> [plustek_pp] 0x81
> [plustek_pp] CCID = 0x00
> [plustek_pp] P9636InitAsic() done.
> [plustek_pp] ResetPort()
> [plustek_pp] Test 0x55
> [plustek_pp] Test 0xAA
> [plustek_pp] Compare data=0x40 and status=0x10,
> port=0x0
> [plustek_pp] ioP98ReadWriteTest()
> [plustek_pp] Putting Scanner (ASIC 98001) into
> Idle-Mode
> [plustek_pp] detectScannerConnection() returns 0.
> [plustek_pp] p9636InitP98001(0)
> [plustek_pp] bData = 0x0000, PCB-ID = 0x00
> [plustek_pp] CCD-ID = 0x00 = _CCD_3797
> [plustek_pp] bSetScanModeFlag = 0
> [plustek_pp] *** setupBuffers ***
> [plustek_pp] Driverbuf(147360 bytes) needed !
> [plustek_pp] pColorRunTab = 0x453f2534 - 0x453f1fa8
> [plustek_pp] Adjust for 98001 ASIC
> [plustek_pp] sb2 = 0x453ce008, sb1 = 0x453d8be8,
> Color = 0x453e8db8
> [plustek_pp] Pro = 0x453ee3a8, size = 147360
> [plustek_pp] *** DETECTION DONE, result: 0 ***
> [plustek_pp] ioctl(_PTDRV_ADJUST)
> [plustek_pp] Adjusting device 0
> [plustek_pp] warmup:       -1
> [plustek_pp] lampOff:      -1
> [plustek_pp] lampOffOnEnd: -1
> [plustek_pp] ioctl(_PTDRV_GET_CAPABILITES)
> [plustek_pp] ioctl(_PTDRV_GET_LENSINFO)
> [plustek_pp] Scanner information:
> [plustek_pp] Vendor : Plustek
> [plustek_pp] Model  : 9636T/12000T
> [plustek_pp] Asic   : 0x81
> [plustek_pp] Flags  : 0x00000280
> [plustek_pp] Version: 0x00002c00
> [plustek_pp] drvclose()
> [plustek_pp] ioctl(_PTDRV_STOP_SCAN)
> [plustek_pp] Waiting for Sensor to be back in position
> [plustek_pp] - done !
> [plustek_pp] ioctl(_PTDRV_CLOSE_DEVICE)
> [plustek_pp] *** cleanup buffers ***
> [plustek_pp] Putting Scanner (ASIC 98001) into
> Idle-Mode
> [plustek_pp] Lamp-Timer started!
> [plustek_pp] ptdrvClose()
> [plustek_pp] MiscRestorePort()
> [plustek_pp] Releasing parport
> [plustek_pp] attach: model = >9636T/12000T<
> [plustek_pp] sane_get_devices (0xb9f9251c, 0)
> [plustek_pp] sane_exit
> [plustek_pp] ptdrvShutdown()
> [plustek_pp] cleanup device 0
> [plustek_pp] Lamp-Timer stopped!
> [plustek_pp] Try to claim the parport
> [plustek_pp] Putting Scanner (ASIC 98001) into
> Idle-Mode
> [plustek_pp] Releasing parport
>

Here it is :

I noticed that it worked fine as root, not as user..
May be is it a problem of permission...


[sanei_debug] Setting debug level of plustek_pp to 20.
[plustek_pp] PlustekPP backend V0.01-8, part of 
sane-backends 1.0.14
[plustek_pp] ># Plustek-PP SANE Backend 
configuration file<
[plustek_pp] ># For use with Plustek parallel-port 
scanners<
[plustek_pp] >#<
[plustek_pp] ><
[plustek_pp] >#<
[plustek_pp] ># user either [direct] or [kernel] 
to access the scanner<
[plustek_pp] ># when using [kernel], device 
specifies the device-node, which is created<
[plustek_pp] ># by the kernel-module loader 
(applies only to Linux)<
[plustek_pp] ># when using [direct], device is 
used to set the parallel-port base address<
[plustek_pp] ># or a device-name suitable for 
libieee1284, i.e. parport0<
[plustek_pp] >#<
[plustek_pp] >[direct]<
[plustek_pp] >device 0x378<
[plustek_pp] Decoding device name >0x378<
[plustek_pp] ><
[plustek_pp] >#<
[plustek_pp] ># leave the default values as 
specified in /etc/modules.conf<
[plustek_pp] >#<
[plustek_pp] >option warmup    -1<
[plustek_pp] Decoding option >warmup<
[plustek_pp] >option lOffOnEnd -1<
[plustek_pp] Decoding option >lOffOnEnd<
[plustek_pp] >option lampOff   -1<
[plustek_pp] Decoding option >lampOff<
[plustek_pp] ><
[plustek_pp] ># model override switch, mostly for 
cosmetic changes, if the autodetection<
[plustek_pp] ># does not work or could not work 
correctly<
[plustek_pp] >#option mov 7<
[plustek_pp] ><
[plustek_pp] >#<
[plustek_pp] ># example for accessing the scanner 
via libieee1284<
[plustek_pp] >#<
[plustek_pp] >[direct]<
[plustek_pp] attach (0x378, 0xb273b660, (nil))
[plustek_pp] Device configuration:
[plustek_pp] device name   : >0x378<
[plustek_pp] direct I/O    : yes
[plustek_pp] warmup        : -1s
[plustek_pp] lampOff       : -1
[plustek_pp] lampOffOnEnd  : yes
[plustek_pp] model override: 0
[plustek_pp] ---------------------
[plustek_pp] drvopen()
[plustek_pp] open: PtDrvInit failed: 4
[plustek_pp] open failed: -1
[plustek_pp] >device parport0<
[plustek_pp] Decoding device name >parport0<
[plustek_pp] ><
[plustek_pp] >#<
[plustek_pp] ># example for accessing the scanner 
via the kernel module<
[plustek_pp] >#<
[plustek_pp] >#[kernel]<
[plustek_pp] >#device /dev/pt_drv<
[plustek_pp] >#<
[plustek_pp] >#option warmup    -1<
[plustek_pp] >#option lOffOnEnd -1<
[plustek_pp] >#option lampOff   -1<
[plustek_pp] attach (parport0, 0xb273b660, (nil))
[plustek_pp] Device configuration:
[plustek_pp] device name   : >parport0<
[plustek_pp] direct I/O    : yes
[plustek_pp] warmup        : -1s
[plustek_pp] lampOff       : -1
[plustek_pp] lampOffOnEnd  : yes
[plustek_pp] model override: 0
[plustek_pp] ---------------------
[plustek_pp] drvopen()
[plustek_pp] open: PtDrvInit failed: 11
[plustek_pp] open failed: -1
[plustek_pp] sane_get_devices (0xb273d72c, 0)
[plustek_pp] sane_exit

thank you

-- 
Jacques

On Thursday 01 July 2004 16:07, Jacques Montier wrote:
> Here it is :
>
> I noticed that it worked fine as root, not as user..
> May be is it a problem of permission...

Hmmpf, yes of course, please set the permissions of /dev/parport0
correctly, I use:
crw-rw-rw-    1 root     root      99,   0 2003-03-14 14:08 /dev/parport0

Ciao,
  Gerhard

>
>
> [sanei_debug] Setting debug level of plustek_pp to 20.
> [plustek_pp] PlustekPP backend V0.01-8, part of
> sane-backends 1.0.14
> [plustek_pp] ># Plustek-PP SANE Backend
> configuration file<
> [plustek_pp] ># For use with Plustek parallel-port
> scanners<
> [plustek_pp] >#<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># user either [direct] or [kernel]
> to access the scanner<
> [plustek_pp] ># when using [kernel], device
> specifies the device-node, which is created<
> [plustek_pp] ># by the kernel-module loader
> (applies only to Linux)<
> [plustek_pp] ># when using [direct], device is
> used to set the parallel-port base address<
> [plustek_pp] ># or a device-name suitable for
> libieee1284, i.e. parport0<
> [plustek_pp] >#<
> [plustek_pp] >[direct]<
> [plustek_pp] >device 0x378<
> [plustek_pp] Decoding device name >0x378<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># leave the default values as
> specified in /etc/modules.conf<
> [plustek_pp] >#<
> [plustek_pp] >option warmup    -1<
> [plustek_pp] Decoding option >warmup<
> [plustek_pp] >option lOffOnEnd -1<
> [plustek_pp] Decoding option >lOffOnEnd<
> [plustek_pp] >option lampOff   -1<
> [plustek_pp] Decoding option >lampOff<
> [plustek_pp] ><
> [plustek_pp] ># model override switch, mostly for
> cosmetic changes, if the autodetection<
> [plustek_pp] ># does not work or could not work
> correctly<
> [plustek_pp] >#option mov 7<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># example for accessing the scanner
> via libieee1284<
> [plustek_pp] >#<
> [plustek_pp] >[direct]<
> [plustek_pp] attach (0x378, 0xb273b660, (nil))
> [plustek_pp] Device configuration:
> [plustek_pp] device name   : >0x378<
> [plustek_pp] direct I/O    : yes
> [plustek_pp] warmup        : -1s
> [plustek_pp] lampOff       : -1
> [plustek_pp] lampOffOnEnd  : yes
> [plustek_pp] model override: 0
> [plustek_pp] ---------------------
> [plustek_pp] drvopen()
> [plustek_pp] open: PtDrvInit failed: 4
> [plustek_pp] open failed: -1
> [plustek_pp] >device parport0<
> [plustek_pp] Decoding device name >parport0<
> [plustek_pp] ><
> [plustek_pp] >#<
> [plustek_pp] ># example for accessing the scanner
> via the kernel module<
> [plustek_pp] >#<
> [plustek_pp] >#[kernel]<
> [plustek_pp] >#device /dev/pt_drv<
> [plustek_pp] >#<
> [plustek_pp] >#option warmup    -1<
> [plustek_pp] >#option lOffOnEnd -1<
> [plustek_pp] >#option lampOff   -1<
> [plustek_pp] attach (parport0, 0xb273b660, (nil))
> [plustek_pp] Device configuration:
> [plustek_pp] device name   : >parport0<
> [plustek_pp] direct I/O    : yes
> [plustek_pp] warmup        : -1s
> [plustek_pp] lampOff       : -1
> [plustek_pp] lampOffOnEnd  : yes
> [plustek_pp] model override: 0
> [plustek_pp] ---------------------
> [plustek_pp] drvopen()
> [plustek_pp] open: PtDrvInit failed: 11
> [plustek_pp] open failed: -1
> [plustek_pp] sane_get_devices (0xb273d72c, 0)
> [plustek_pp] sane_exit
>
> thank you

Gerhard Jaeger a écrit :
> On Thursday 01 July 2004 16:07, Jacques Montier wrote:
> 
>>Here it is :
>>
>>I noticed that it worked fine as root, not as user..
>>May be is it a problem of permission...
> 
> 
> Hmmpf, yes of course, please set the permissions of /dev/parport0
> correctly, I use:
> crw-rw-rw-    1 root     root      99,   0 2003-03-14 14:08 /dev/parport0
> 
> Ciao,
>   Gerhard
> 

Well  i have no /dev/parport0 file...


-- 
Jacques

Gerhard Jaeger a écrit :
> On Thursday 01 July 2004 16:22, you wrote:
> 
>>Gerhard Jaeger a écrit :
>>
>>>On Thursday 01 July 2004 16:07, Jacques Montier wrote:
>>>
>>>>Here it is :
>>>>
>>>>I noticed that it worked fine as root, not as user..
>>>>May be is it a problem of permission...
>>>
>>>Hmmpf, yes of course, please set the permissions of /dev/parport0
>>>correctly, I use:
>>>crw-rw-rw-    1 root     root      99,   0 2003-03-14 14:08 /dev/parport0
>>>
>>
>>Well  i have no /dev/parport0 file...
> 
> 
> Hmmm, are you using devfs? Try (as root):
> find / -name "parport0"
> 
> Ciao,
>   Gerhard
> 

I found
  /proc/sys/dev/parport/parport0




-- 
Jacques

On Thursday 01 July 2004 16:31, Jacques Montier wrote:
> Gerhard Jaeger a écrit :
> > On Thursday 01 July 2004 16:22, you wrote:
> >>Gerhard Jaeger a écrit :
> >>>On Thursday 01 July 2004 16:07, Jacques Montier wrote:
> >>>>Here it is :
> >>>>
> >>>>I noticed that it worked fine as root, not as user..
> >>>>May be is it a problem of permission...
> >>>
> >>>Hmmpf, yes of course, please set the permissions of /dev/parport0
> >>>correctly, I use:
> >>>crw-rw-rw-    1 root     root      99,   0 2003-03-14 14:08
> >>> /dev/parport0
> >>
> >>Well  i have no /dev/parport0 file...
> >
> > Hmmm, are you using devfs? Try (as root):
> > find / -name "parport0"
> >
> > Ciao,
> >   Gerhard
>
> I found
>   /proc/sys/dev/parport/parport0

That's not what I'm looking for :-(
What kernel are you using? On 2.4, try:
mknod --mode=0666 /dev/parport0 c 99 0

This will create the node, make sure, that ppdev is loaded...

Ciao,
  Gerhard

Gerhard Jaeger a écrit :
> On Thursday 01 July 2004 16:31, Jacques Montier wrote:
> 
>>Gerhard Jaeger a écrit :
>>
>>>On Thursday 01 July 2004 16:22, you wrote:
>>>
>>>>Gerhard Jaeger a écrit :
>>>>
>>>>>On Thursday 01 July 2004 16:07, Jacques Montier wrote:
>>>>>
>>>>>>Here it is :
>>>>>>
>>>>>>I noticed that it worked fine as root, not as user..
>>>>>>May be is it a problem of permission...
>>>>>
>>>>>Hmmpf, yes of course, please set the permissions of /dev/parport0
>>>>>correctly, I use:
>>>>>crw-rw-rw-    1 root     root      99,   0 2003-03-14 14:08
>>>>>/dev/parport0
>>>>
>>>>Well  i have no /dev/parport0 file...
>>>
>>>Hmmm, are you using devfs? Try (as root):
>>>find / -name "parport0"
>>>
>>>Ciao,
>>>  Gerhard
>>
>>I found
>>  /proc/sys/dev/parport/parport0
> 
> 
> That's not what I'm looking for :-(
> What kernel are you using? On 2.4, try:
> mknod --mode=0666 /dev/parport0 c 99 0
> 
> This will create the node, make sure, that ppdev is loaded...
> 
> Ciao,
>   Gerhard

As xsane worked fine as root, i went to the root 
directory and found the two config files
  Noname:Philips675webcam.drc (for my webcam)
and  Plustek:9636T_12000T.drc (for my scanner)
i copied them to my /home/.sane/xsane directory 
and changed the owner name.
then,
Well, what a strange thing ! with
mknod --mode=0666 /dev/parport0 c 99 0
i got "file already exists"
and i saw the symlink (i did not see it before 
!!)/dev/parport0 ---> /dev/parports/0
and
ls -l /dev/parports/0   .............   crw-rw-rw- 
  1 root root 99,  0 jan  1  1970 0

so, when i start xsane, it works fine, now !
But.. i don't quite understand all the stuff !

Thank you very much for your help !

Sincerely
-- 
Jacques