touch-packages team mailing list archive

[Nick Dedekind <1514556@xxxxxxxxxxxxxxxxxx>]

Testing in Ubuntu 15.04 (r168):

This problem seems to be related to mir dropping old buffers when the visibility changes from occluded->exposed.
If I remove the "drop old buffers" code from mir::scene::BasicSurface::set_visibility, then it seems to come right.

There have been some changes in mir related to the buffer stream and
arbiter which I'm testing if might make a difference. It may also be
that we're not handling the dropped buffers correctly in qtmir?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to qtubuntu in Ubuntu.
https://bugs.launchpad.net/bugs/1514556

Title:
  With occlusion detection, apps stop responding when switching from
  another app.

Status in Canonical System Image:
  In Progress
Status in qtmir package in Ubuntu:
  Confirmed
Status in qtubuntu package in Ubuntu:
  Confirmed

Bug description:
  If you switch from one app to the next, and start scrolling around (eg
  in dash) very soon after switching, the app will sometimes stop
  rendering.

  Reproduce:
  1) Start an app (eg dialer) from dash
  2) wait a few seconds in dialer.
  3) Do a quick switch back to dash, and immediately start scrolling/swiping around.

  Expected:
  app behaves normally and responds to user input.

  Actual:
  sometimes the dash will stop responding for an undetermined amount of time, or until you interact with another part of the shell.

To manage notifications about this bug go to:
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1514556/+subscriptions