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[Till Kamppeter <1429563@xxxxxxxxxxxxxxxxxx>]

This problem is on the kernel level, not in CUPS. Moving to the kernel
...

Please also follow the instructions of the section "Parallel Port
Printer" on https://wiki.ubuntu.com/DebuggingPrintingProblems. Thanks

** Package changed: cups (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1429563

Title:
  Printer parallel port kernel call trace

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Hi,

    I'm trying to install an old printer on my Ubuntu 14.04. Printer
  isn't found. I found this in dmesg:

  [ 240.800054] INFO: task parallel:1815 blocked for more than 120 seconds.
  [ 240.800063] Not tainted 3.13.0-46-generic #77-Ubuntu
  [ 240.800066] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 240.800070] parallel D d2867e80 0 1815 1 0x00000004
  [ 240.800078] d2867ec8 00000086 c105baf7 d2867e80 c1664875 c1a95580 c1926a00 c1664633
  [ 240.800089] c1a95580 c1926a00 ce406800 df3a4580 de68f600 00000002 d2867ee4 c1664633
  [ 240.800098] da8d3900 00000002 0000037a de68f600 00000002 d2867ee4 ffffff16 d286007b
  [ 240.800109] Call Trace:
  [ 240.800122] [<c105baf7>] ? irq_exit+0x47/0xa0
  [ 240.800131] [<c1664875>] ? do_IRQ+0x45/0xb0
  [ 240.800136] [<c1664633>] ? common_interrupt+0x33/0x38
  [ 240.800145] [<c1664633>] ? common_interrupt+0x33/0x38
  [ 240.800165] [<e02e21e2>] ? parport_pc_frob_control+0x32/0xd0 [parport_pc]
  [ 240.800173] [<c1659d73>] schedule_preempt_disabled+0x23/0x60
  [ 240.800178] [<c165b6bd>] __mutex_lock_slowpath+0x10d/0x171
  [ 240.800185] [<c165abec>] mutex_lock+0x1c/0x28
  [ 240.800192] [<e026dbfb>] pp_ioctl+0x1b/0x40 [ppdev]
  [ 240.800198] [<e026dbe0>] ? pp_do_ioctl+0x860/0x860 [ppdev]
  [ 240.800204] [<c118afc2>] do_vfs_ioctl+0x2e2/0x4d0
  [ 240.800211] [<e026dfae>] ? pp_read+0x17e/0x1ed [ppdev]
  [ 240.800216] [<c117a544>] ? vfs_read+0xd4/0x140
  [ 240.800221] [<c118b210>] SyS_ioctl+0x60/0x80
  [ 240.800226] [<c166414d>] sysenter_do_call+0x12/0x12
  [ 240.800230] INFO: task hpfax:1819 blocked for more than 120 seconds.
  [ 240.800233] Not tainted 3.13.0-46-generic #77-Ubuntu
  [ 240.800235] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 240.800238] hpfax D ce401a00 0 1819 1 0x00000000
  [ 240.800244] de71fec8 00200086 ce401a00 ce401a00 de71fef4 c1a95580 c1926a00 00000000
  [ 240.800253] c1a95580 c1926a00 ce401a00 df3a4580 de71fec4 00000008 de7790a4 00000000
  [ 240.800262] de71fef4 ce440a00 de71fee0 c1187a60 de71ff80 de71fec0 de782000 00000000
  [ 240.800270] Call Trace:
  [ 240.800277] [<c1187a60>] ? path_openat+0xb0/0x530
  [ 240.800284] [<c1659d73>] schedule_preempt_disabled+0x23/0x60
  [ 240.800289] [<c165b6bd>] __mutex_lock_slowpath+0x10d/0x171
  [ 240.800295] [<c165abec>] mutex_lock+0x1c/0x28
  [ 240.800302] [<e026dbfb>] pp_ioctl+0x1b/0x40 [ppdev]
  [ 240.800308] [<e026dbe0>] ? pp_do_ioctl+0x860/0x860 [ppdev]
  [ 240.800313] [<c118afc2>] do_vfs_ioctl+0x2e2/0x4d0
  [ 240.800317] [<c1187efd>] ? final_putname+0x1d/0x40
  [ 240.800321] [<c1187efd>] ? final_putname+0x1d/0x40
  [ 240.800326] [<c11880a4>] ? putname+0x24/0x40
  [ 240.800330] [<c1179916>] ? do_sys_open+0x196/0x260
  [ 240.800334] [<c118b210>] SyS_ioctl+0x60/0x80
  [ 240.800339] [<c166414d>] sysenter_do_call+0x12/0x12
  [ 240.800343] INFO: task hpfax:1844 blocked for more than 120 seconds.
  [ 240.800346] Not tainted 3.13.0-46-generic #77-Ubuntu
  [ 240.800348] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 240.800351] hpfax D ce403400 0 1844 1 0x00000000
  [ 240.800356] ce4fbec8 00200086 ce403400 ce403400 ce4fbef4 c1a95580 c1926a00 00000000
  [ 240.800365] c1a95580 c1926a00 ce403400 df3a4580 ce4fbec4 00000008 de7790a4 00000000
  [ 240.800374] ce4fbef4 ce479800 ce4fbee0 c1187a60 ce4fbf80 ce4fbec0 de781000 00000000
  [ 240.800383] Call Trace:
  [ 240.800388] [<c1187a60>] ? path_openat+0xb0/0x530
  [ 240.800395] [<c1659d73>] schedule_preempt_disabled+0x23/0x60
  [ 240.800400] [<c165b6bd>] __mutex_lock_slowpath+0x10d/0x171
  [ 240.800407] [<c165abec>] mutex_lock+0x1c/0x28
  [ 240.800413] [<e026dbfb>] pp_ioctl+0x1b/0x40 [ppdev]
  [ 240.800419] [<e026dbe0>] ? pp_do_ioctl+0x860/0x860 [ppdev]
  [ 240.800424] [<c118afc2>] do_vfs_ioctl+0x2e2/0x4d0
  [ 240.800428] [<c1187efd>] ? final_putname+0x1d/0x40
  [ 240.800433] [<c1187efd>] ? final_putname+0x1d/0x40
  [ 240.800437] [<c11880a4>] ? putname+0x24/0x40
  [ 240.800441] [<c1179916>] ? do_sys_open+0x196/0x260
  [ 240.800445] [<c118b210>] SyS_ioctl+0x60/0x80
  [ 240.800450] [<c166414d>] sysenter_do_call+0x12/0x12
  [ 240.800454] INFO: task hp:1846 blocked for more than 120 seconds.
  [ 240.800457] Not tainted 3.13.0-46-generic #77-Ubuntu
  [ 240.800459] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  [ 240.800461] hp D ce400000 0 1846 1 0x00000000
  [ 240.800466] ce4e9ec8 00200086 ce400000 ce400000 ce4e9ef4 c1a95580 e0fa46c9 00000016
  [ 240.800475] c1a95580 ce48db00 ce400000 df3b2580 ce4e9ec4 00000008 de7790a4 00000000
  [ 240.800484] ce4e9ef4 ce582b00 ce4e9ee0 c1187a60 ce4e9f80 ce4e9ec0 dbdb5000 00000000
  [ 240.800493] Call Trace:
  [ 240.800499] [<c1187a60>] ? path_openat+0xb0/0x530
  [ 240.800506] [<c1659d73>] schedule_preempt_disabled+0x23/0x60
  [ 240.800511] [<c165b6bd>] __mutex_lock_slowpath+0x10d/0x171
  [ 240.800517] [<c165abec>] mutex_lock+0x1c/0x28
  [ 240.800524] [<e026dbfb>] pp_ioctl+0x1b/0x40 [ppdev]
  [ 240.800529] [<e026dbe0>] ? pp_do_ioctl+0x860/0x860 [ppdev]
  [ 240.800534] [<c118afc2>] do_vfs_ioctl+0x2e2/0x4d0
  [ 240.800539] [<c1187efd>] ? final_putname+0x1d/0x40
  [ 240.800543] [<c1187efd>] ? final_putname+0x1d/0x40
  [ 240.800547] [<c11880a4>] ? putname+0x24/0x40
  [ 240.800551] [<c1179916>] ? do_sys_open+0x196/0x260
  [ 240.800556] [<c118b210>] SyS_ioctl+0x60/0x80
  [ 240.800560] [<c166414d>] sysenter_do_call+0x12/0x12

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: cups 1.7.2-0ubuntu1.5
  ProcVersionSignature: Ubuntu 3.13.0-46.77-generic 3.13.11-ckt15
  Uname: Linux 3.13.0-46-generic i686
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: i386
  Date: Sun Mar  8 12:24:59 2015
  InstallationDate: Installed on 2015-03-01 (6 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
  Lpstat: device for RasPi-Samsung-SCX-4200-Series: ipp://10.112.234.2:631/printers/RasPi-Samsung_SCX-4200_Series
  MachineType: Hewlett-Packard HP Compaq dc7600 Convertible Minitower
  Papersize: a4
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=cs_CZ.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic root=UUID=68cb65f8-d5dd-4de2-beb3-6d9ef56a1c63 ro quiet splash vt.handoff=7
  SourcePackage: cups
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/24/2006
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 786D1 v01.56
  dmi.board.name: 09F0h
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: CZC6142WWW
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr786D1v01.56:bd04/24/2006:svnHewlett-Packard:pnHPCompaqdc7600ConvertibleMinitower:pvr:rvnHewlett-Packard:rn09F0h:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.product.name: HP Compaq dc7600 Convertible Minitower
  dmi.sys.vendor: Hewlett-Packard

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