I recently acquired a new PC, installed Ubuntu 12.04 and found myself
with the same problem as reported by Daniel Llewellyn back in March. The
only minor differences are that I have the 32-bit version of 12.04 and a
slightly newer version of CUPS. Further details of my computer, printer
and USB<->parallel cable are :

Release 12.04 (precise) 32-bit
Kernel Linux 3.2.0-33-generic-pae
GNOME 3.4.2

CUPS version : 1.5.3-0ubuntu4
     & system-config-printer 1.3.8

Printer Description : Samsung ML-4500
Device URI : usb://Samsung/ML-4500
Make and Model : Samsung ML-4500 Foomatic/gdi (recommended)

$ groups
drew adm lp cdrom sudo dip plugdev lpadmin sambashare
$ lsusb
Bus 002 Device 004: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel Port
$ usb-devices
T:  Bus=02 Lev=02 Prnt=02 Port=05 Cnt=02 Dev#=  4 Spd=12  MxCh= 0
D:  Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
P:  Vendor=067b ProdID=2305 Rev=02.02
S:  Manufacturer=Prolific Technology Inc.
S:  Product=IEEE-1284 Controller
C:  #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
I:  If#= 0 Alt= 1 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp

The USB<->parallel cable was purchased recently from a firm called
CableStar, and the printer is known to work.

Daniel did a very good job of describing the problem, so I will just
repeat his words here :

"Cups recognises the printer model and gnome correctly lists the printer
in system-config-printer. Any attempt to print to the printer, however,
results in the printer spinning up it's cooling fans and heating the
fusing lamp while the "data" led on the front flashes for about
5minutes. In the cups admin screen the print job is listed as "Sending
data to printer." The printer eventually stops whirring and shuts back
down into standby with the Data led remaining static to indicate that
the printer is idle. At no point does the printer actually begin, or
finish, printing anything."

Has anyone found out if the PL2305 chipset and Samsung ML-4500 have a hardware 
incompatibility ?
Otherwise, is there some way I can assist in investigating what this printing 
problem is ?

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to cups in Ubuntu.
https://bugs.launchpad.net/bugs/959676

Title:
  cups will not print to USB connected Samsung ML-4500 (with USB ->
  Parallel adapter)

Status in “cups” package in Ubuntu:
  Incomplete
Status in “cups” source package in Precise:
  Incomplete

Bug description:
  I have a working parallel laser printer: Samsung ML-4500. I have
  connected this to my computer with a usb-to-parallel cable.

  The cable is listed in as:

  $ lsusb -s 005:005
  Bus 005 Device 005: ID 067b:2305 Prolific Technology, Inc. PL2305 Parallel 
Port

  Cups recognises the printer model and gnome correctly lists the
  printer in system-config-printer. Any attempt to print to the printer,
  however, results in the printer spinning up it's cooling fans and
  heating the fusing lamp while the "data" led on the front flashes for
  about 5minutes. In the cups admin screen the print job is listed as
  "Sending data to printer." The printer eventually stops whirring and
  shuts back down into standby with the Data led remaining static to
  indicate that the printer is idle. At no point does the printer
  actually begin, or finish, printing anything.

  After plugging the usb cable dmesg reports:

  [ 2952.148182] usb 5-3: new full-speed USB device number 5 using ohci_hcd
  [ 2952.321367] usblp0: USB Bidirectional printer dev 5 if 0 alt 1 proto 2 vid 
0x067B pid 0x2305

  Upon attempting to print to the device dmesg reports:

  [ 2964.457576] usblp0: removed
  [ 2964.479420] usblp0: USB Bidirectional printer dev 5 if 0 alt 1 proto 2 vid 
0x067B pid 0x2305
  [ 2965.505493] usblp0: removed
  [ 2965.537417] usblp0: USB Bidirectional printer dev 5 if 0 alt 1 proto 2 vid 
0x067B pid 0x2305
  [ 2969.733454] usblp0: removed

  (The time period between these two dmesg output snippets shows a print
  attempt directly after plugging the cable. The "usblp0: removed" does
  not appear until the print spool is actively trying to print, and thus
  is not a result of the hotplug event.)

  Now that I have a job in the queue, cups admin screen reports that the
  printer is in the following state:

  ML-4500 Samsung ML-4500 daniel-MS-7693  Samsung ML-4500 Foomatic/gdi
  (recommended)      Processing - "Sending data to printer."

  The printer is idle, however, and does not appear to be receiving any
  communication since the initial attempt at printing the job (which is
  also listed below):

  ML-4500-3       Unknown         Withheld        1k      Unknown
  processing since Mon 19 Mar 2012 20:05:15 GMT "Sending data to
  printer."

  The time is now 20:24, around twenty minutes since this particular
  test job was started and still no sign of an output. Previous jobs I
  have cancelled to clear the queue.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: cups 1.5.2-8
  ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
  Uname: Linux 3.2.0-18-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: amd64
  CupsErrorLog:
   W [19/Mar/2012:19:27:50 +0000] failed to CreateProfile: 
org.freedesktop.ColorManager.AlreadyExists:profile id 'ML-4500-Gray..' already 
exists
   W [19/Mar/2012:19:27:50 +0000] failed to CreateDevice: 
org.freedesktop.ColorManager.AlreadyExists:device id 'cups-ML-4500' already 
exists
   W [19/Mar/2012:19:27:50 +0000] failed to CreateProfile: 
org.freedesktop.ColorManager.AlreadyExists:profile id 
'Photosmart-C4100-series-Gray..' already exists
   W [19/Mar/2012:19:27:50 +0000] failed to CreateProfile: 
org.freedesktop.ColorManager.AlreadyExists:profile id 
'Photosmart-C4100-series-RGB..' already exists
   W [19/Mar/2012:19:27:50 +0000] failed to CreateDevice: 
org.freedesktop.ColorManager.AlreadyExists:device id 
'cups-Photosmart-C4100-series' already exists
  Date: Mon Mar 19 20:09:47 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
  Lpstat: device for ML-4500: usb://Samsung/ML-4500
  MachineType: MSI MS-7693
  Papersize: a4
  PpdFiles: ML-4500: Samsung ML-4500 Foomatic/gdi (recommended)
  ProcEnviron:
   LANGUAGE=en_GB:en
   TERM=xterm
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic 
root=UUID=60ea4233-8504-473c-8911-ce68b72b19b8 ro quiet splash vt.handoff=7
  SourcePackage: cups
  UpgradeStatus: Upgraded to precise on 2012-03-12 (6 days ago)
  dmi.bios.date: 02/16/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V1.5
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: 970A-G46 (MS-7693)
  dmi.board.vendor: MSI
  dmi.board.version: 2.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MSI
  dmi.chassis.version: 2.0
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrV1.5:bd02/16/2012:svnMSI:pnMS-7693:pvr2.0:rvnMSI:rn970A-G46(MS-7693):rvr2.0:cvnMSI:ct3:cvr2.0:
  dmi.product.name: MS-7693
  dmi.product.version: 2.0
  dmi.sys.vendor: MSI

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