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Problems w/CUPS:Unable to open USB device [SOLVED]
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upalom00
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Joined: 11 Jan 2004
Posts: 78
Location: Santa Clara

PostPosted: Sun May 01, 2005 5:25 am    Post subject: Problems w/CUPS:Unable to open USB device [SOLVED] Reply with quote

Hi

I am having problems setting up my printer. I've done quite a bit of reading on various documents and here on the forums.

I have the following included in my USE flags: cups, foomaticdb, ppds, and usb.

I've gone and rebuilt the kernel. I enabled [*] USB Support ... and ... [M] USB Printer support. (first one built in while the second one as a module).


This is what I get when I unplug and plug the printer back on:

Code:

# dmesg | tail
fbsplash: console 8 using theme 'emergence'
fbsplash: switched splash state to 'on' on console 8
fbsplash: console 9 using theme 'emergence'
fbsplash: switched splash state to 'on' on console 9
fbsplash: console 10 using theme 'emergence'
fbsplash: switched splash state to 'on' on console 10
fbsplash: console 11 using theme 'emergence'
fbsplash: switched splash state to 'on' on console 11
usb 1-1: USB disconnect, address 2
usb 1-1: new full speed USB device using ohci_hcd and address 6
#


I am assuming this is where I start to go wrong as it detects the printer as only a "USB device" and not a printer? Not sure.

And when I do a low level test print, I get this....
Code:
# cat test.txt > /dev/usb/lp0
bash: /dev/usb/lp0: No such device


I tried to continue on further with configuring CUPS but I still get the same error message of "No such device". What can I do to enable this printer at /dev/usb/lp0?


Last edited by upalom00 on Sun May 01, 2005 11:39 pm; edited 1 time in total
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Ma3oxuct
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Joined: 18 Apr 2003
Posts: 523

PostPosted: Sun May 01, 2005 5:43 am    Post subject: Reply with quote

Did you by any chance read this Printing guide: http://www.gentoo.org/doc/en/printing-howto.xml?

Too me it does not seem that you are enableing the proper modules...did you try

Code:
modprobe usbcore
modprobe usblp
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upalom00
Tux's lil' helper
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Joined: 11 Jan 2004
Posts: 78
Location: Santa Clara

PostPosted: Sun May 01, 2005 5:02 pm    Post subject: Reply with quote

Per the guide, it states to enable "Support for USB" as a module. I have done this before, and it broke my system. I could not start the windows manager. So I decided against enabling this as a module. I did however, enable "USB Printer support" as a module.

Okay...after modprobe,

Code:

# modprobe usblp


I get this in my dmesg

Code:

# dmesg | tail
fbsplash: console 11 using theme 'emergence'
fbsplash: switched splash state to 'on' on console 11
usbcore: registered new driver usblp
drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver
usb 1-1: new full speed USB device using ohci_hcd and address 5
drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 5 if 0 alt 0 proto 2 vid 0x04B8 pid 0x0005
usb 1-1: USB disconnect, address 5
drivers/usb/class/usblp.c: usblp0: removed
usb 1-1: new full speed USB device using ohci_hcd and address 6
drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 6 if 0 alt 0 proto 2 vid 0x04B8 pid 0x0005


I tried to do a test print and get nothing.
Code:
# cat test.txt > /dev/usb/lp0


I tried restarting CUPS and then another test print but get no results.

Anything else I should be doing?
Is it absolutely necessary to build "Support for USB" as a module?
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upalom00
Tux's lil' helper
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Joined: 11 Jan 2004
Posts: 78
Location: Santa Clara

PostPosted: Sun May 01, 2005 5:32 pm    Post subject: Reply with quote

I should add that I decided to continue and configure CUPS. After configuring it, I went to http://localhost:631/ and attempted a test print.

All test prints show as "Completed".

However, there is no output on my printer. :cry:
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upalom00
Tux's lil' helper
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Joined: 11 Jan 2004
Posts: 78
Location: Santa Clara

PostPosted: Sun May 01, 2005 11:14 pm    Post subject: Reply with quote

Making some small progress but still no output on the printer.

I found out that I did not have gimp-print installed so I emerged it. Configured my printer as such:

Code:
b# foomatic-configure -s cups -p Epson-Stylus_Color_880 -c file:/dev/usb/lp0 -n Epson -d gimp-print
Use of uninitialized value in substitution (s///) at /usr/lib/perl5/vendor_perl/5.8.5/Foomatic/DB.pm line 3427.


I still don't get any output doing a low level print. Nor do I get one with I try a print test through the browser admin page. Instead it tells me the print attempt was aborted.

Here are the printers specs through my printer manager.....

Code:
Epson Stylus Color 880 Foomatic/gimp-print (recommended)     
Description: Epson Stylus Color 880
Location:
Printer State: idle, accepting jobs.
Device URI: usb://EPSON/Stylus%20COLOR%20880
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upalom00
Tux's lil' helper
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Joined: 11 Jan 2004
Posts: 78
Location: Santa Clara

PostPosted: Sun May 01, 2005 11:39 pm    Post subject: SOLVED!! Reply with quote

Finally!!

I decided to configure the printer through the browser admin. It turns out that by selecting the correct Printer/Driver, I was able to get it working again. My specs now read as follows per the Printer Admin Page:

Code:

EPSON Stylus Color 880 - CUPS+Gimp-Print v4.2.7     
Description: Epson Stylus Color 880
Location:
Printer State: idle, accepting jobs.
"Ready to print."
Device URI: usb://EPSON/Stylus%20COLOR%20880
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AgtSkippy
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Joined: 10 Aug 2003
Posts: 39

PostPosted: Thu Jun 09, 2005 10:48 pm    Post subject: Reply with quote

ah, thanks man. I have the exact problem down to the epson stylus 880, but where on the CUPS admin webpage can you change the driver?
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AgtSkippy
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Joined: 10 Aug 2003
Posts: 39

PostPosted: Thu Jun 09, 2005 11:02 pm    Post subject: Reply with quote

lol, see "modify printer" x-p

silly me, I need to pay more attention. false alarm, false alarm.
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