touch-packages team mailing list archive

[Alexandros Frantzis <alexandros.frantzis@xxxxxxxxxxxxx>]

> had some trouble getting this, not sure if its valid by the time I did
gdb of usc while froze

Unfortunately the command used in gdb was 't a a b' which inserted
breakpoints in all threads, instead of the correct 't a a bt' (note 'bt'
vs 'b') which would print the backtraces :) So the log is not very
informative.

The lsof output shows that unity8 has *not* exhausted its fd namespace,
so this is not an instance of https://bugs.launchpad.net/bugs/1495871.
lsof was not run as root, so we didn't get fd information about USC
(which runs as root).

For reference, the exact invocations to use to get all the information
next time this occurs:

$ sudo gdb -p $(pidof unity-system-compositor)
(gdb) thread apply all backtrace full

$ sudo lsof

-- 
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Ubuntu.
https://bugs.launchpad.net/bugs/1491566

Title:
  unresponsive shell including power button doesn't blank/unblank
  display

Status in Canonical System Image:
  Confirmed
Status in Mir:
  In Progress
Status in unity-system-compositor package in Ubuntu:
  In Progress

Bug description:
  Note: based on descriptions we spawned bug 1495871 to cover cases
  where the power button still works, this bug will only be for cases
  where the ui input is frozen as well as the power button being
  unresponsive

  RC proposed MX4 r100

  This happened twice in the last two days
  Receive an incoming text
  Screen turns on and notification is shown
  notification goes away
  try to interact with the phone and nothing works
  another text message is received and the notification is displayed

  Adding incoming calls as also suspected to be triggering the issue

  Note this has been impossible to reproduce, and in use only happens
  very rarely

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