CentOS - Jul 2014 - SOLVED: Centos 7: printing four copies with Libreoffice prints garbage

After much head scratching and throwing most of a ream of paper into the trash,
I just found and solved the problem.

Thinking that perhaps I have a cable issue, I was re-seating the usb cable that
connects my Xerox Phaser 3250 printer to the computer and realized that the
printer was plugged into a USB 3.0 port on my computer.  When I moved it to a
USB 2.0 port, the printer immediately started working properly using the Xerox
Phaser 3150 driver that comes with cups, just like it always did under Centos 6.

The computer must have been pushing data to the printer too quickly over the USB
3.0 port; the printer got a garbled postscript instruction and everything went
downhill from there.

Now I'm pretty happy -- my printer works again.  I've taped a note to
the printer to be damn sure that I remember to always plug it into a USB 2.0
port in the future.

-- 
MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

On Wed, Jul 30, 2014 at 11:03:03PM -0600, Frank Cox
wrote:
> After much head scratching and throwing most of a ream of paper into the
trash, I just found and solved the problem.
> 
> Thinking that perhaps I have a cable issue, I was re-seating the usb cable
that connects my Xerox Phaser 3250 printer to the computer and realized that the
printer was plugged into a USB 3.0 port on my computer.  When I moved it to a
USB 2.0 port, the printer immediately started working properly using the Xerox
Phaser 3150 driver that comes with cups, just like it always did under Centos 6.
> 
> The computer must have been pushing data to the printer too quickly over
the USB 3.0 port; the printer got a garbled postscript instruction and
everything went downhill from there.
> 
> Now I'm pretty happy -- my printer works again.  I've taped a note
to the printer to be damn sure that I remember to always plug it into a USB 2.0
port in the future.

Frank, et al:
FYI, and this may or may not be related...

I bought a Venus DS3R PRO2 storage box a while back. this device offers
USB-3 or eSata connectivity. I quickly found that when using a USB-3
cable and connecting to the USB-3 ports on my motherboard, that it would
work for a short while then the system could no longer access it, the
/dev/<node> would disappear and the only way to get it back was to
reboot. (note that eSata worked fine, and still does).

incidentally, using USB2 appears to work even when connected to the
USB-3 connector on the mommyboard.

I tried a rawhide live cd and it had the same issue, but I reported it to
Fedora (I know, we're on a  Cenots list right now) and in a while a fix
came down. So perhaps it would work on C7, haven't tried it yet.

Fred
> 
> -- 
> MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
-- 
-------------------------------------------------------------------------------
 .----    Fred Smith   /              
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-------------------------------- Jude 1:24,25 ---------------------------------

On 7/30/2014 10:03 PM, Frank Cox wrote:
> The computer must have been pushing data to the printer too quickly over
the USB 3.0 port; the printer got a garbled postscript instruction and
everything went downhill from there.
that doesn't compute.    USB 3 uses a different (new) set of 5 pins on 
the same connector, but the original 4 pins are still there and support 
USB 1 and 2.    A more likely explanation is that the device driver for 
this printer isn't enumerating USB devices correctly, or isn't handling 
some additional usb3 related port-specific status information correctly, 
so its getting confused.

The whole USB spec is a ungawdly mess now with layers and layers of BS 
piled up on a shakey foundation, and complicated APIs to access all this.



-- 
john r pierce                                      37N 122W
somewhere on the middle of the left coast