[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Launchpad Bug Tracker]

This bug was fixed in the package ubuntu-settings-components -
0.7+16.10.20160617-0ubuntu1

---
ubuntu-settings-components (0.7+16.10.20160617-0ubuntu1) yakkety; urgency=medium

  [ Lukáš Tinkl ]
  * Fix huge icons in network indicator caused by a binding loop (LP:
#1585645, #1586667)

  [ Nick Dedekind ]
  * Removed some of the timezone sensitive date code from calendar (LP:
#1450036, #1560188)

 -- Michał Sawicz   Fri, 17 Jun 2016
13:02:37 +

** Changed in: ubuntu-settings-components (Ubuntu)
   Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Fix Released
Status in indicator-datetime package in Ubuntu:
  Fix Released
Status in ubuntu-settings-components package in Ubuntu:
  Fix Released
Status in unity8 package in Ubuntu:
  Fix Released

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Lukáš Tinkl]

** Changed in: unity8 (Ubuntu)
   Status: Confirmed => Fix Released

** Changed in: ubuntu-settings-components (Ubuntu)
   Status: Confirmed => In Progress

** Changed in: ubuntu-settings-components (Ubuntu)
 Assignee: (unassigned) => Nick Dedekind (nick-dedekind)

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Fix Released
Status in indicator-datetime package in Ubuntu:
  Fix Released
Status in ubuntu-settings-components package in Ubuntu:
  In Progress
Status in unity8 package in Ubuntu:
  Fix Released

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Pat McGowan]

** Changed in: canonical-devices-system-image
   Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Fix Released
Status in indicator-datetime package in Ubuntu:
  Fix Released
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Nick Dedekind]

** Branch linked: lp:~nick-dedekind/ubuntu-settings-components/calendar-
freeze

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Fix Committed
Status in indicator-datetime package in Ubuntu:
  Fix Released
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Launchpad Bug Tracker]

This bug was fixed in the package indicator-datetime -
15.10+16.04.20160323-0ubuntu1

---
indicator-datetime (15.10+16.04.20160323-0ubuntu1) xenial; urgency=medium

  [ Charles Kerr ]
  * Remove the calendar from the phone profile. (LP: #1560188)

 -- Michael Zanetti   Wed, 23 Mar 2016
09:45:27 +

** Changed in: indicator-datetime (Ubuntu)
   Status: In Progress => Fix Released

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Fix Committed
Status in indicator-datetime package in Ubuntu:
  Fix Released
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Jean-Baptiste Lallement]

** Changed in: canonical-devices-system-image
   Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Fix Committed
Status in indicator-datetime package in Ubuntu:
  In Progress
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Alejandro J. Cura]

** Changed in: canonical-devices-system-image
   Status: Confirmed => In Progress

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  In Progress
Status in indicator-datetime package in Ubuntu:
  In Progress
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Charles Kerr]

** Changed in: unity8 (Ubuntu)
   Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  In Progress
Status in indicator-datetime package in Ubuntu:
  In Progress
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: ubuntu-settings-components (Ubuntu)
   Status: New => Confirmed

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  In Progress
Status in ubuntu-settings-components package in Ubuntu:
  Confirmed
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Łukasz Zemczak]

** Tags added: lt-blocker

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  In Progress
Status in ubuntu-settings-components package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Charles Kerr]

Looks like this is being caused by the QML calendar widget: I can
consistently reproduce the freeze using ToyKeeper's recipe of
wipe+timezone+rotate on a freshly-flashed krillin running rc-proposed.
The freeze goes away for me after installing the linked branch from silo
70, which removes the calendar.

This is a u8 bug rather than an indicator-datetime one, but this is the
easiest place to back out the calendar for OTA10.

** Branch linked: lp:~charlesk/indicator-datetime/lp-1560188-remove-
calendar-from-phone-profile

** Changed in: indicator-datetime (Ubuntu)
   Status: New => In Progress

** Changed in: indicator-datetime (Ubuntu)
   Importance: Undecided => Critical

** Changed in: indicator-datetime (Ubuntu)
 Assignee: (unassigned) => Charles Kerr (charlesk)

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  In Progress
Status in ubuntu-settings-components package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Michał Sawicz]

Note the landing above is not just the MPs it lists, since the two
previous releases of indicator-datetime were xenial-only - the full diff
between the two vivid overlay versions is, I believe, here:

https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/stable-
phone-overlay/+sourcepub/6208703/+listing-archive-extra

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  New
Status in ubuntu-settings-components package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Michał Sawicz]

It's most probably the addition of calendar to the indicator that caused
this, so we might revert that for the time being, until we understand
what the issue is.

** Also affects: ubuntu-settings-components (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  New
Status in ubuntu-settings-components package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Michał Sawicz]

I've tracked it down to this indicator-datetime landing:

https://requests.ci-train.ubuntu.com/#/ticket/893

Downgrading indicator-datetime to the version below (or simply stopping
it before following the repro steps above) prevents the freeze.

https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/stable-
phone-overlay/+sourcepub/5495431/+listing-archive-extra

** Changed in: unity8 (Ubuntu)
   Status: Confirmed => Incomplete

** Also affects: indicator-datetime (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  New
Status in ubuntu-settings-components package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged

[Michał Sawicz]

** Summary changed:

- unity8 hang w/ CPU pegged (needs more detail)
+ unity8 hang w/ CPU pegged

** Changed in: canonical-devices-system-image
 Assignee: kevin gunn (kgunn72) => Alejandro J. Cura (alecu)

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Title:
  unity8 hang w/ CPU pegged

Status in Canonical System Image:
  Confirmed
Status in indicator-datetime package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  Incomplete

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged (needs more detail)

[Michał Sawicz]

** Description changed:

  Sometime in the past week or so, it seems that unity8 acquired a new bug
  which causes it to use 100% CPU and stop responding.  I saw it happen on
  krillin rc-proposed 286 and 288 with silo 39 (address-book-app)
  installed.  Jibel saw it with a different silo, and mterry reports
  seeing it with yet another different silo.
  
  Details are being collected still, but this bug serves as a place to put
  the data together.
  
  For me, the steps involved to trigger it were:
- 1. Flash rc-proposed to a krillin.
- 2. Install silo 39, address-book-app, and reboot.  (probably not relevant)
- 3. Log in, configure time zone, disable automatic updates, configure login to 
use a passcode instead of passphrase, set screen to never turn itself off.
- 4. Go back to the app scope and launch address-book-app.
- 5. Tilt the phone to make the screen rotate.
+ 1. Wipe (or freshly flash) a krillin or mako
+ 2. Log in, configure time zone
+ 3. Tilt the phone to make the screen rotate.
  
  At this point, the UI stopped responding and 'top' showed 100% CPU being
  used by unity8.
  
  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)
  
  More details are needed.

** Description changed:

- Sometime in the past week or so, it seems that unity8 acquired a new bug
- which causes it to use 100% CPU and stop responding.  I saw it happen on
- krillin rc-proposed 286 and 288 with silo 39 (address-book-app)
- installed.  Jibel saw it with a different silo, and mterry reports
- seeing it with yet another different silo.
- 
- Details are being collected still, but this bug serves as a place to put
- the data together.
- 
- For me, the steps involved to trigger it were:
- 1. Wipe (or freshly flash) a krillin or mako
+ To trigger:
+ 1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
- 3. Tilt the phone to make the screen rotate.
+ 3. Tilt the phone to make the screen rotate
  
  At this point, the UI stopped responding and 'top' showed 100% CPU being
  used by unity8.
  
  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)
  
  More details are needed.

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged (needs more detail)

Status in Canonical System Image:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  To trigger:
  1. Wipe (or freshly flash) rc-proposed on a krillin or mako
  2. Log in, configure time zone
  3. Tilt the phone to make the screen rotate

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged (needs more detail)

[Lukáš Tinkl]

Just reproduced on mako with plain rc-proposed:
http://paste.ubuntu.com/15470993/

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged (needs more detail)

Status in Canonical System Image:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  Sometime in the past week or so, it seems that unity8 acquired a new
  bug which causes it to use 100% CPU and stop responding.  I saw it
  happen on krillin rc-proposed 286 and 288 with silo 39 (address-book-
  app) installed.  Jibel saw it with a different silo, and mterry
  reports seeing it with yet another different silo.

  Details are being collected still, but this bug serves as a place to
  put the data together.

  For me, the steps involved to trigger it were:
  1. Flash rc-proposed to a krillin.
  2. Install silo 39, address-book-app, and reboot.  (probably not relevant)
  3. Log in, configure time zone, disable automatic updates, configure login to 
use a passcode instead of passphrase, set screen to never turn itself off.
  4. Go back to the app scope and launch address-book-app.
  5. Tilt the phone to make the screen rotate.

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged (needs more detail)

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity8 (Ubuntu)
   Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged (needs more detail)

Status in Canonical System Image:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  Sometime in the past week or so, it seems that unity8 acquired a new
  bug which causes it to use 100% CPU and stop responding.  I saw it
  happen on krillin rc-proposed 286 and 288 with silo 39 (address-book-
  app) installed.  Jibel saw it with a different silo, and mterry
  reports seeing it with yet another different silo.

  Details are being collected still, but this bug serves as a place to
  put the data together.

  For me, the steps involved to trigger it were:
  1. Flash rc-proposed to a krillin.
  2. Install silo 39, address-book-app, and reboot.  (probably not relevant)
  3. Log in, configure time zone, disable automatic updates, configure login to 
use a passcode instead of passphrase, set screen to never turn itself off.
  4. Go back to the app scope and launch address-book-app.
  5. Tilt the phone to make the screen rotate.

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged (needs more detail)

[Lukáš Tinkl]

I just got the hang by simply configuring the timezone in System
Settings. SIlo 13 might be making it worse in that in configures the TZ
as well.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unity8 in Ubuntu.
https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged (needs more detail)

Status in Canonical System Image:
  Confirmed
Status in unity8 package in Ubuntu:
  Confirmed

Bug description:
  Sometime in the past week or so, it seems that unity8 acquired a new
  bug which causes it to use 100% CPU and stop responding.  I saw it
  happen on krillin rc-proposed 286 and 288 with silo 39 (address-book-
  app) installed.  Jibel saw it with a different silo, and mterry
  reports seeing it with yet another different silo.

  Details are being collected still, but this bug serves as a place to
  put the data together.

  For me, the steps involved to trigger it were:
  1. Flash rc-proposed to a krillin.
  2. Install silo 39, address-book-app, and reboot.  (probably not relevant)
  3. Log in, configure time zone, disable automatic updates, configure login to 
use a passcode instead of passphrase, set screen to never turn itself off.
  4. Go back to the app scope and launch address-book-app.
  5. Tilt the phone to make the screen rotate.

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions

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[Touch-packages] [Bug 1560188] Re: unity8 hang w/ CPU pegged (needs more detail)

[Jean-Baptiste Lallement]

I experienced a similar issue very frequently with silo 13 (unity8, new
OOBE) but never without. So maybe the issue already exists in the image
but silo 13 makes it worse.

** Also affects: canonical-devices-system-image
   Importance: Undecided
   Status: New

** Changed in: canonical-devices-system-image
   Status: New => Confirmed

** Changed in: canonical-devices-system-image
   Importance: Undecided => Critical

** Changed in: canonical-devices-system-image
 Assignee: (unassigned) => kevin gunn (kgunn72)

** Changed in: canonical-devices-system-image
Milestone: None => ww08-2016

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unity8 in Ubuntu.
https://bugs.launchpad.net/bugs/1560188

Title:
  unity8 hang w/ CPU pegged (needs more detail)

Status in Canonical System Image:
  Confirmed
Status in unity8 package in Ubuntu:
  New

Bug description:
  Sometime in the past week or so, it seems that unity8 acquired a new
  bug which causes it to use 100% CPU and stop responding.  I saw it
  happen on krillin rc-proposed 286 and 288 with silo 39 (address-book-
  app) installed.  Jibel saw it with a different silo, and mterry
  reports seeing it with yet another different silo.

  Details are being collected still, but this bug serves as a place to
  put the data together.

  For me, the steps involved to trigger it were:
  1. Flash rc-proposed to a krillin.
  2. Install silo 39, address-book-app, and reboot.  (probably not relevant)
  3. Log in, configure time zone, disable automatic updates, configure login to 
use a passcode instead of passphrase, set screen to never turn itself off.
  4. Go back to the app scope and launch address-book-app.
  5. Tilt the phone to make the screen rotate.

  At this point, the UI stopped responding and 'top' showed 100% CPU
  being used by unity8.

  I tried to get data from gdb, but it wasn't very helpful:
  (gdb) bt
  #0  0xa803cce2 in ?? ()
  #1  0xa803cb98 in ?? ()
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

  More details are needed.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions

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