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[boblinux <1258919@xxxxxxxxxxxxxxxxxx>]

I just made another test : I stopped the cups service, loaded usblp with
modprobe, and ran :

 cat lines.ps | gs -q -sDEVICE=ppmraw -r600 -sPAPERSIZE=letter -dNOPAUSE
-sOutputFile=- - | pnm2ppa --eco -v 720  -i - -o - > /dev/usb/lp0

so : lines.ps contains 56 lines to be printed, which fails with
cups+libusb : here : SUCCESS !

I am not sure that this helps for my diagnostic - it just tells that
cups + usblp is flawed with my devices ...

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https://bugs.launchpad.net/bugs/1258919

Title:
  printing issue with parallel-to-usb adapter

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  Hello,

  So far I am assuming that the problem is a driver one.

  I have an old HP Deskjet 710C parallel printer. I really don't print a
  lot, so it ages well. I just replaced my former desktop with a new
  barebone without parallel port - no space to embed a PCI  IEEE 1284
  adapter. So I just bought a cable which is a parallel-to-usb adapter :
  it is a Sweex adapter, the kernel recognizes it as :

  Prolific Technology, Inc. PL2305 Parallel Port

  I configured cups to use this new adapter, with the same old pnm2ppa
  driver. When I try to print a test page from cups (or other printings)
  it goes well, until close to the end, when the printing suddenly
  stops, without the sheet being released : I have to power off the
  printer, which as a side effect triggers the sheet ejection before
  power off.

  I read various articles and forums on this topic before posting.
  Playing with usblp, kernel blacklists and /dev/usb/lp0 does not solve
  anything.

  I wanted to be sure that it was not the Prolific controller which was
  flawed. So I connected it to a windows 7 virtual machine into
  Virtualbox; Windows installed various drivers, and eventually various
  printings ran seamlessly - without my issue on GNU/Linux. So my
  conclusion is that the controller is ok.

  I also just tested a mainline kernel :

  http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc3-trusty/linux-
  image-3.13.0-031300rc3-generic_3.13.0-031300rc3.201312061335_amd64.deb

  no improvement, my test page stops being printed at the same spot
  close to the end. So I can assume that there is a bug in the
  controller's driver.

  So I am posting this bug report here : can I do anything else for
  helping ? Is there any hope that this will be investigated further ?

  Best regards
  R. Grasso

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image (not installed)
  ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
  Uname: Linux 3.11.0-14-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D3', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Sun Dec  8 13:53:43 2013
  HibernationDevice: RESUME=UUID=a16e3a2c-0f38-4e72-9c51-145a864b60a1
  InstallationDate: Installed on 2013-11-06 (32 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Shuttle Inc. DS47D
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-14-generic root=UUID=8c51cecc-9054-4edc-8b06-afb7bb4ebd2e ro
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-14-generic N/A
   linux-backports-modules-3.11.0-14-generic  N/A
   linux-firmware                             1.116
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/09/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.03
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: FS47D
  dmi.board.vendor: Shuttle Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 10
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03:bd08/09/2013:svnShuttleInc.:pnDS47D:pvrV1.0:rvnShuttleInc.:rnFS47D:rvr1.0:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
  dmi.product.name: DS47D
  dmi.product.version: V1.0
  dmi.sys.vendor: Shuttle Inc.

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