[hpoj-devel] PSC 500: Scanning problem

[<mal...@t-...>]

Hello,

  I'm new to Linux and to printing under Linux.  I'm not completely sure if 
this is the right place to ask for advice concerning a scanning problem.  For 
work I have to implement a printing strategy for Linux machines so I'm 
presently into looking at how printing is actually done. So here is the 
story.  I recently bought for home a printer.  At home I run Mandrake 7.2 
with the 2.2.17 kernel and KDE 2.0.  I had my eye on this HP PSC 500 
all-in-one device and checked it out to see if it was supported under Linux.  
I was glad to see it was.  So far I'm doing good printings, although there 
are a few things to adjust here and there I think in order to get better 
photo prints. For instance the sky on the photos is rather filled with little 
dark dots which are not there in the first place.  This could be a gamma 
setting?  Also when I print with the standard font and ps setup in Emacs some 
letters, specifically the 'W', comes out darker.

  But the real problem is with scanning.  I would really like to get it 
going.  I have downloaded SANE 1.0.4 and followed the instructions in the 
SCAN-HOWTO file.  One thing that puzzles me is that the SANE docs seems to 
mention exclusively SCSI interfaces, which I obviously don't have. The err 
msg I get is this:

# scanimage --test
scanimage: no SANE devices found   

To get there I do the following.  Here are the basic modules loaded after 
boot up:

# lsmod

Module                  Size  Used by
emu10k1                42480   1  (autoclean)
soundcore               2800   4  (autoclean) [emu10k1]
r128                   63696   6
agpgart                19728   2  [r128]
hisax                 470096   3
isdn                  104208   4  [hisax]
slhc                    4544   1  [isdn]
3c90x                  21472   1  (autoclean)
nls_cp437               3952  12  (autoclean)
vfat                    9408   6  (autoclean)
fat                    30432   6  (autoclean) [vfat]
supermount             14224   2  (autoclean)


Now I fire up the printer interface with a simple script I made in 
/etc/rc.d/init.d/start_printer:

# cat start_printer

insmod parport
insmod parport_pc
insmod parport_probe
insmod /usr/local/lib/ieee12844.o
insmod /usr/local/lib/ieee12844pp.o
/usr/local/bin/ptal-printd mlc:mlcpp0 -like /dev/lp0 & 


... which yields the following results:

# ./start_printer

Using /lib/modules/2.2.17-21mdk/misc/parport.o
Using /lib/modules/2.2.17-21mdk/misc/parport_pc.o
Using /lib/modules/2.2.17-21mdk/misc/parport_probe.o


Now the modules loaded are as follows:

# lsmod

Module                  Size  Used by
ieee12844pp            15808   0  (unused)
ieee12844              13152   1  [ieee12844pp]
parport_probe           3536   0
parport_pc              7568   1
parport                 7744   1  [ieee12844pp parport_probe parport_pc]
emu10k1                42480   1  (autoclean)
soundcore               2800   4  (autoclean) [emu10k1]
r128                   63696   6
agpgart                19728   2  [r128]
hisax                 470096   3
isdn                  104208   4  [hisax]
slhc                    4544   1  [isdn]
3c90x                  21472   1  (autoclean)
nls_cp437               3952  12  (autoclean)
vfat                    9408   6  (autoclean)
fat                    30432   6  (autoclean) [vfat]
supermount             14224   2  (autoclean)  


And here's the output of the hpo devid command:

# ./hpo devid
MFG:HEWLETT-PACKARD;MDL:PSC500;CMD:MLC,PCL,PML,SCL;CLS:PRINTER;DES:Hewlett-Packard 
PSC 500;CMT:OFFICEJET 
PRO;SERN:MYJ0AE33X8WZ;VSTATUS:$HB0$FC0,ff,DN,IDLE,CUT;LSS:01;LDF:1;LDE:1;   


So, why is there no SANE device recognized by the system?


Regards,


Alain