I also hit by this bug. I can confirmed this bug with Linux 4.0.0.
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-lts-utopic in Ubuntu.
https://bugs.launchpad.net/bugs/1424088
Title:
No resume on ThinkPad Helix -- system keeps sleeping
Status in linux-lts-utopic package in Ubuntu:
New
Bug description:
Lenovo ThinkPad Helix is a "Convertable Ultrabook" with an Intel
Core-M ("Broadwell") processor. The tablet can come off the dock-with-
keyboard and latch to it as a cover.
Attempting a suspend is apparently successful. The LED (on the back of
the tablet pulsates).
But neither attaching the tablet in its open position nor pressing the
power button will wake the system to resume. The LED continues to
pulsate and the system continues to be unreachable by Ethernet.
As a "workaround" I can suspend with pm-suspend-hybrid and then when
it does not resume I can force power off and turn it back on. This
causes it to thaw.
None of the pm-action "quirk" options helped.
Description: Ubuntu 14.04.2 LTS
Release: 14.04
I have also tried Ubuntu 14.10.1 and it also has this issue.
The kernel message insists that I attach /sys/class/drm/card0/error
but that file is empty.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified:
boot/vmlinuz-3.16.0-30-generic]
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Feb 20 14:08:57 2015
InstallationDate: Installed on 2015-02-20 (0 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)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1424088/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
