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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1426272

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

** Tags added: vivid

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https://bugs.launchpad.net/bugs/1426272

Title:
  vivid-proposed/krillin - Phone reboots spontaneously

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  current build number: 122
  device name: krillin
  channel: ubuntu-touch/devel-proposed
  alias: ubuntu-touch/vivid-proposed
  last update: 2015-02-25 15:06:29
  version version: 122
  version ubuntu: 20150225
  version device: 20150210-95b6a9f
  version custom: 20150225

  
  It happened up to 3 times a day, the phone reboots with no apparent reason. syslog doesn't work on the phone but /proc/last_kmsg shows the following message:

  [  793.598710]systemd-logind[16120]: Failed to start user service: Unknown unit: user@0.service
  [  793.606282]systemd-logind[16120]: Failed to start user service: Unknown unit: user@32011.service
  [  806.517752]systemd-logind[16242]: Failed to start user service: Unknown unit: user@0.service
  [  806.521333]systemd-logind[16242]: Failed to start user service: Unknown unit: user@32011.service
  [  809.797251]Restarting system.
  [  809.797336][<c0015404>] (unwind_backtrace+0x0/0x104) from [<c07db344>] (dump_stack+0x20/0x24)
  [  809.797366][<c0015404>] (unwind_backtrace+0x0/0x104) from [<c07db344>] (dump_stack+0x20/0x24)
  [  809.797396][<c07db344>] (dump_stack+0x20/0x24) from [<c0014110>] (handle_IPI+0xf4/0x250)
  [  809.797424][<c07db344>] (dump_stack+0x20/0x24) from [<c0014110>] (handle_IPI+0xf4/0x250)
  [  809.797452][<c0014110>] (handle_IPI+0xf4/0x250) from [<c00085bc>] hdo_IPI+0x18/0x1c)
  [  809.797477][<c0014110>] (handle_IPI+0xf4/0x250) from [<c00085bc>] (do_IPI+0x18/0x1c)
  [  809.797502][<c00085bc>] (do_IPI+0x18/0x1c) from [<c07eb9f4>] (__irq_svc+0x34/0xc8)
  [  809.797529][<c00085bc>] (do_IPI+0x18/0x1c) from [<c07eb9f4>] (__irq_svc+0x34/0xc8)
  [  809.797686][<c07eb9f4>] (8e1fac dc+0x34/0xc8) from [<c000f178>] (78 20070013 ffffffff
  [  809.797718][<c07eb9f4>] (__irq_svc+0x34/0xc8) from [<c000f178>] (default_idle+0x2c/0x40)
  [  809.797747][<c000f178>] (default_idle+0x2c/0x40) from [<c000f5a0>defcpu_idle+0xb0/0x10c)
  [  809.797775][<c000f178>] (default_idle+0x2c/0x40) from [<c000f5a0>] (cpu_idle+0xb0/0x10c)
  [  809.797804][<c000f5a0>] (cpu_idle+0xb0/0x10c) from [<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8)
  [  809.797834][<c000f5a0>] (cpu_idle+0xb0/0x10c) from [<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8)
  [  809.797863][<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8) fromsecondary_start0x807d7d8c)
  [  809.797889][<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8) from [<807d7d8c>] (0x807d7d8c)
  [  809.797915][<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8) from [<807d7d8c>] (0x807d7d8c)
  [  809.797964][<c07db344>] (dump_stack+0x20/0x24) from [<c0014110>] (handle_IPI+0xf4/0x250)
  [  809.798009][<c0014110>] (handle_IPI+0xf4/0x250) from [<c00085bc>] (do_IPI+0x18/0x1c)
  [  809.798056][<c00085bc>] (do_IPI+0x18/0x1c) from [<c07eb9f4>] (__irq_svc+0x34/0xc8)
  [  809.798218][<c07eb9f4>] (__irq_svc+0x34/0xc8) from [<c000f178>] (default_idle+0x2c/0x40)
  [  809.798269][<c000f178>] (default_idle+0x2c/0x40) from [<c000f5a0>] (cpu_idle+0xb0/0x10c)
  [  809.798319][<c000f5a0>] (cpu_idle+0xb0/0x10c) from [<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8)
  [  809.798365][<c07d8448>] (secondary_start_kernel+0x1cc/0x1e8) from [<807d7d8c>] (0x807d7d8c)

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