Screen stays black if outgoing call is rejected

[Jean-Baptiste Lallement]

current build number: 210
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en

Test Case:
1. On DUT1 make a call to DUT2 and cover the proximity sensor
2. On DUT2:
  - If call forwarding is set to reject the call immediately (ie not redirect to the voicemail), reject the call
  - Alternatively, you can take the call and immediately hang up.
3. On DUT1, once the call is terminated, uncover the proximity sensor

Expected Result
Screen is on

Actual Result
Screen stays black and cannot be switched on even with the power button. After a moment, the screen blinks and works normally again.

It works as expected on stable.

[Dave Morley (davmor2)]

Confirming screen stays blank for approximately 20-30 seconds. But only if the call is hung up. If the call is transferred to answering machine it works as expected.

[Dave Morley (davmor2)]

This is a regression over ota 8.5 which works as expected

[Allan LeSage (allanlesage)]

Slightly different case which I assume is the same bug:

TEST CASE
1. DUT2 call DUT1 (subject of test), DUT1 pick up call 1, cover proximity sensor (e.g. by placing to ear)
2. On third phone call DUT1
3. DUT1 beeps to indicate second incoming call, uncover proximity sensor (e.g. by removing from ear to look at screen)
EXPECTED
Screen lit
ACTUAL
Screen black

NOTE: if you don't pick up the second call, the screen will ultimately blink, return to normal as jibel describes--if you've covered/uncovered the proximity sensor n times, *the screen will blink n times*. It feels like something is blocking while the second call is waiting to go to voicemail, then releasing when voicemail picks up.

[Launchpad Janitor (janitor)]

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

[Alexandros Frantzis (afrantzis)]

You can find packages with the fix at: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-025/+packages

Note that when a call is rejected the screen is turned on regardless of proximity status. This is a different issue, not related to this bug (or the fix for the bug).

[Launchpad Janitor (janitor)]

This bug was fixed in the package powerd - 0.16+16.04.20160111.1-0ubuntu1

---------------
powerd (0.16+16.04.20160111.1-0ubuntu1) xenial; urgency=medium

  [ CI Train Bot ]
  * No-change rebuild.

powerd (0.16+16.04.20160111-0ubuntu1) xenial; urgency=medium

  * Keep the dbus proxy to Unity.Screen (implemented by USC) alive for
    the lifetime of the process. Otherwise we may block when trying to
    create the proxy while servicing a request from USC (LP: #1531158)

 -- Alexandros Frantzis <email address hidden> Mon, 11 Jan 2016 13:34:18 +0000