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

 

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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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.

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