Public bug reported:
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)
** Affects: linux-lts-utopic (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resume trusty
** Attachment added: "suspend/resume crash file"
https://bugs.launchpad.net/bugs/1424088/+attachment/4323646/+files/susres.2015-02-20_12%3A07%3A58.578026.crash
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https://bugs.launchpad.net/bugs/1424088
Title:
No resume on ThinkPad Helix -- system keeps sleeping
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