Public bug reported:
Hi all,
I would like to report that the back light of the display doesn't come back on
after the computer has been in sleep or display off mode. It initially came
back on to allow me to unlock the account / log back in, then it turned off and
stayed like that. The windows are displaying correctly, so using the desk lamp
as light source I could log out and back in again, to no avail. Re-start and
all is happy, but power save again, and darkness surrounds you.
My laptop is a Dell Latitude E6540 with the standard Intel 4600 graphics.
Please let me know what other details you may require
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-11.13-generic 4.2.1
Uname: Linux 4.2.0-11-generic x86_64
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Oct 18 19:16:14 2015
InstallationDate: Installed on 2015-10-11 (7 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug wily
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https://bugs.launchpad.net/bugs/1507346
Title:
Back light off after sleep mode
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