Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-lts-utopic (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1483467
Title:
[Acer Aspire V5-573G] suspend/resume failure
Status in linux-lts-utopic package in Ubuntu:
Confirmed
Bug description:
It looks to be a duplicate of
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1416557 bug
(which was closed because it has expired).
I made kernel bisection (log attached) as was requested in bug 1416557 and
found
# first bad commit: [faae404ebdc6bba744919d82e64c16448eb24a36] ACPICA: Add
"Windows 2013" string to _OSI support.
It appears that resume fails because ACPI OSI reports OS to be "Windows 2013".
I added boot kernel parameter acpi_osi="!Windows 2013" and now able to
suspend-resume normally (checked in kernels up to 3.16)
I have no idea whar ACPI OSI means and why "Windows 2013" prevents
from normal resume (the problem seems to happen somwhere in nouveau
driver). I just spend 3 days for this bisection and want others ubuntu
users have this problem fixed.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-45-generic 3.16.0-45.60~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
Uname: Linux 3.16.0-45-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Aug 11 04:48:58 2015
InstallationDate: Installed on 2015-08-09 (1 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64
(20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
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