udev, hotplug and usb printers

udev, hotplug and usb printers

[Anes Lihovac]

Hi

I have a problem to get my USB printer working with
the above mentioned configuration. In the past
when devfs was used I never faced problems.
Due to the fact that devfs had got obsolete I switched
to udev. The problem is, that for some reason
/dev/lp0 is disapearing after a reboot(but this is
not always, just sometimes) and sometimes I can print,
and then for some *&%$ing reason,now it does not work any
more, and I have absolutly no clue where to start 
looking for the bug. 

All the drivers I need a,re loaded, like
usblp, usbcore, the hcd's(ohci, uhci, and ehci) .
cups is running and accepting jobs.
dmesg is showing this message for the printer when switched on

usb 2-1: USB disconnect, address 3
drivers/usb/class/usblp.c: usblp0: removed
usb 2-1: new full speed USB device using address 4
drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 4 if 0 alt 0 
proto 2 vid 0x04A9 pid 0x106B


The command:
udevinfo -r -q name -p /sys/class/usb/lp0
gives me: device not found in database
One week back when I did this command I got /dev/lp0.
This was with Kernel Version 2.6.3. Now that I am running 2.6.4
it seems not to work anymore, for some reason.

I recompiled hotplug and udev.

The version of udev and hotplug  I use are:

hotplug: 20040105
udev: 0.23

One last thing to mention:

When hotplug is started I get this error:

cat: /sys//class/usb/lp0/bNumCofigurations: No such file or directory
/etc/hotplug/usb.agent: line 144: [: too many arguments


So, if anyone can give me help on this, please do so. 

Thanks in advance and best regards.
Anes

PS: Sorry for the long post.


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