Laptop screen remains blank when resuming from pm-suspend, even though an external display would turn back on.

Bug #1316851 reported by Yves Saint-Franc
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Expired
Low
Unassigned

Bug Description

Update (2014-Aug-09): An external display connected via VGA port would turn on when the system resumed from suspend, but the primary screen (and possibly backlight) remained blank.

------------------

When resuming from suspend, the PC's screen remained blank. However, everything else seemed responsive, as I was able to log in and turn up/down the volume via shortcut keys and got an audio response.

---System Details---
Description: Ubuntu 14.04 LTS
Release: 14.04
Machine: Toshiba Satellite L755D

pm-utils:
  Installed: 1.4.1-13
  Candidate: 1.4.1-13
  Version table:
 *** 1.4.1-13 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pm-utils 1.4.1-13
Uname: Linux 3.12.2-031202-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME
Date: Tue May 6 18:58:20 2014
InstallationDate: Installed on 2012-12-05 (517 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
PackageArchitecture: all
SourcePackage: pm-utils
UpgradeStatus: Upgraded to trusty on 2014-04-19 (17 days ago)

Revision history for this message
Yves Saint-Franc (jeeves476) wrote :
description: updated
summary: - Screen remains blank when resuming from pm-suspend
+ Laptop screen remains blank when resuming from pm-suspend, even though
+ an external display would turn back on.
description: updated
Revision history for this message
penalvch (penalvch) wrote :

Yves Saint-Franc, could you please execute the following via a terminal in order for the necessary debugging information to be attached:
apport-collect 1316851

affects: pm-utils (Ubuntu) → linux (Ubuntu)
Changed in linux (Ubuntu):
importance: Undecided → Low
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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