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[Bug 1396244] Re: Unlocking the phone over dialer is very slow

 

>> Is dialer fullscreening itself on lock?
<mterry> greyback_, yes
<mterry> greyback_, well the greeter enforces fullscreen / locked-down UI when you're in the emergency dialer (doesn't present launcher or indicators).  So the dialer requests fullscreen because otherwise there'd be a blank bar at the top where the panel used to be
<greyback_> mterry: could it fullscreen itself only when it needs to appear?
<mterry> greyback_, well hm.  I don't think we send it any signals that it could pick up on
<mterry> greyback_, unless it wasn't top app, then it would notice that it was being focused

The fullscreen/unfullscreen change appears to be a performance hit on
shell while it's trying to animate lock screen. Resize isn't fast, hits
CPU mostly. Not sure how, but might be optimisable.

Alternative is that Shell could refuse to honour fullscreen requests if
device locked. But would be racey on unlock - what would happen first,
the unfullscreen request from the client, or the shell's "oh I need to
fullscreen you now"

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https://bugs.launchpad.net/bugs/1396244

Title:
  Unlocking the phone over dialer is very slow

Status in “unity8” package in Ubuntu:
  Confirmed

Bug description:
  Steps to repro:
  * have a pass{code,word}-protected phone
  * start dialer
  * lock the phone
  * unlock the phone

  Expected:
  * nothing much, stuff unlocks fluently and all

  Current:
  * fade out of the lockscreen takes like 2-3s, dialer and panel seem to fight over fullscreen vs. maximized surface size

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: unity8 8.01+15.04.20141117-0ubuntu1
  Uname: Linux 3.4.67 armv7l
  ApportVersion: 2.14.7-0ubuntu10
  Architecture: armhf
  Date: Tue Nov 25 17:46:27 2014
  InstallationDate: Installed on 2014-11-25 (0 days ago)
  InstallationMedia: Ubuntu Vivid Vervet (development branch) - armhf (20141125-020205)
  SourcePackage: unity8
  UpgradeStatus: No upgrade log present (probably fresh install)

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