[Bug 1307917] Re: installing driver hangs indefinitely

[Bruno Nova]

I found this problem as well in Trusty with all updates installed (Epson printer too).
I also had problems installing my priinter in Saucy.

The problem really seems to be in the install-printerdriver.py script (and, thus, system-config-printer source package).
The installation hangs at 50%.
Then I tried several more times. It hanged now at 0%.
Then I looked in the System Monitor and there were several "install-printerdriver.py" processes (due to the several attempts).
I killed all those processes.

However, I then removed the Epson driver, then the Epson repository and key (using Software & Updates) and refreshed the cache.
Then I tried to install the printer again, this time by executing the system-config-printer command from the terminal (to check the output). And it worked (!?).
I also tried running the install-printerdriver.py script before this, and it wasn't hanging (the driver was still installed, though).

Was this a temporary problem?
Still, it shouldn't have hanged!

This should be "Confirmed" for system-config-printer, as the bug
reporter already answered the questions asked.

** Changed in: system-config-printer (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1307917

Title:
  installing driver hangs indefinitely

Status in “packagekit” package in Ubuntu:
  Incomplete
Status in “system-config-printer” package in Ubuntu:
  Confirmed

Bug description:
  While installing a printer driver, I get the usual progress bar modal
  window (title: 'Installing driver epson-inkjet-printer-escpr',
  content: 'Installing ...'). It just stops and hangs indefinitely at
  about 50% progress though.

  I've inspected pstree, and the offending command line seems to be:

  /usr/bin/python /usr/share/system-config-printer/install-
  printerdriver.py epson-inkjet-printer-escpr deb
  http://download.ebz.epson.net/dsc/op/stable/debian/ lsb3.2 main
  E5220FB7014D0FBDA50DFC2BE5E86C008AA65D56

  Running it from the command line outputs the following two lines:

      Signature key supplied
      pk.install_signature

  .. and then it hangs as well.

  I've attached an strace -f of the above command.  The trace doesn't
  actually end (the process hangs as before), but does stop outputting
  new system calls.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: system-config-printer-gnome 1.4.3+20140219-0ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-20.42-generic 3.13.7
  Uname: Linux 3.13.0-20-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu2
  Architecture: amd64
  CupsErrorLog:
   
  CurrentDesktop: Unity
  Date: Tue Apr 15 10:35:39 2014
  InstallationDate: Installed on 2014-04-02 (13 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: No destinations added.
  MachineType: Dell Inc. Vostro 3500
  PackageArchitecture: all
  Papersize: a4
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-20-generic root=UUID=02c716f6-1efa-4717-acc6-62fab88d7a37 ro quiet splash vt.handoff=7
  SourcePackage: system-config-printer
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/25/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 0G2R51
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A10
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A10
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd10/25/2010:svnDellInc.:pnVostro3500:pvrA10:rvnDellInc.:rn0G2R51:rvrA10:cvnDellInc.:ct8:cvrA10:
  dmi.product.name: Vostro 3500
  dmi.product.version: A10
  dmi.sys.vendor: Dell Inc.

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