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Re: can't get usb printer to work. infamous /dev/usb/lp0 can't open error...cups on woody



On Fri, May 16, 2003 at 03:38:23PM -0400, Walter Tautz wrote:
> the odd thing is I got this to work on one of my other hosts (running
> stock debian kernel 2.4.18-686 but not the one below (2.4.20-1- from
> proposed-updates

Er, are you sure? '2.4.20-bigbend' is not the name of any kernel in
Debian that I've seen...

> below it's a hp deskjet 5550 btw: (I'm using cups on woody)
> 
> 
> gbend:~# uname -a
> Linux bigbend.cs 2.4.20-bigbend #1 Fri May 16 12:49:15 EDT 2003 i686 unknown
> bigbend:~# lsmod
> Module                  Size  Used by    Not tainted
> i810_audio             22304   0
> soundcore               3460   2  [i810_audio]
> ac97_codec             10080   0  [i810_audio]
> printer                 7424   0
> usbcore                61024   0  [printer]
> ide-scsi                7616   0
> 
> and dmesg says:
> 
> usb.c: registered new driver usbdevfs
> usb.c: registered new driver hub
> usb.c: registered new driver usblp
> printer.c: v0.11: USB Printer Device Class driver

Do you have 'hotplug' installed?  It can usually figure out the modules
for you.

> here is the kernel config file: (and at the end I've included lspci -v output
> which DOES seem to give some hint as to why thing may not be working, i.e.
> the USB devices seem to be unidentified....?  the system is a Dell Precision
> workstation...

Which bit is the problem?  If it's just that devices are not appearing
in /dev/, then that just means you need to create them yourself with
mknod.  You'll need to find out somewhere else which major/minor numbers
to use, though.  Unless you're using devfs, that is; it's not the
default in Debian, though.

The other obvious things:

1) What does google/linuxprinting.org say about support for your
   printer?
2) Do other USB devices work?
3) Which modules are loaded/what is mentioned in 'dmesg' when you use a
   Debian kernel that works?

-- 
Rob Weir <rweir@ertius.org>  |   mlspam@ertius.org   |   http://www.ertius.org/
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