Display occasionally stays on forever after boot in rc-proposed

Bug #1642360 reported by Alexandros Frantzis
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Canonical System Image
Fix Released
Critical
Łukasz Zemczak
ubuntu-touch-session (Ubuntu)
Fix Released
Undecided
Alexandros Frantzis

Bug Description

Occasionally the display stays on forever after boot in rc-proposed, due to a keep display on request.

The problem seems to be that the keep-display-on-request introduced to fix bug 1623853, sometimes doesn't get released due to races in the upstart scripts. This happens if the lightdm job starts before the keep-display-on-during-boot job starts, in which case the keep-display-on-during-boot job never gets the signal it needs to stop ("stop on started lightdm").

This issue can be reproduced easily by changing the related upstart script timings, for example, by inserting a "sleep 10" at the end of the repowerd.conf pre-start stanza (or post-start stanza, it has the same effect).

Related branches

Changed in canonical-devices-system-image:
milestone: none → 14
importance: Undecided → Critical
status: New → Confirmed
Changed in canonical-devices-system-image:
assignee: nobody → Alexandros Frantzis (afrantzis)
milestone: 14 → none
milestone: none → 14
description: updated
description: updated
Changed in ubuntu-touch-session (Ubuntu):
assignee: nobody → Alexandros Frantzis (afrantzis)
Changed in canonical-devices-system-image:
status: Confirmed → In Progress
Changed in ubuntu-touch-session (Ubuntu):
status: New → In Progress
Changed in canonical-devices-system-image:
assignee: Alexandros Frantzis (afrantzis) → Łukasz Zemczak (sil2100)
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package ubuntu-touch-session - 0.108+17.04.20161117-0ubuntu1

---------------
ubuntu-touch-session (0.108+17.04.20161117-0ubuntu1) zesty; urgency=medium

  * Fix potential upstart job race between lightdm and keep-display-on-
    during-boot (LP: #1642360) (LP: #1642360)

 -- Alexandros Frantzis <email address hidden> Thu, 17 Nov 2016 15:41:40 +0000

Changed in ubuntu-touch-session (Ubuntu):
status: In Progress → Fix Released
Changed in canonical-devices-system-image:
status: In Progress → Fix Committed
Changed in canonical-devices-system-image:
status: Fix Committed → Fix Released
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