[TOSHIBA Satellite U400] suspend/resume failure

[Tim Richardson]

does not resume (no backlight on LCD panel, for example)
seems to be caused by lightdm not by kernel; when
service lightdm stop
 bug is not reproduced by pm-suspend

ProblemType: KernelOops
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-17-generic 3.13.0-17.37
ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
Uname: Linux 3.13.0-17-generic i686
Annotation: This occured during a previous suspend and prevented it from resuming properly.
ApportVersion: 2.13.3-0ubuntu1
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: katherine 1676 F.... pulseaudio
Date: Tue Mar 11 21:08:32 2014
ExecutablePath: /usr/share/apport/apportcheckresume
Failure: suspend/resume
HibernationDevice: RESUME=UUID=3dd143c7-add5-4b7b-8c26-bbd7446abb39
InstallationDate: Installed on 2013-11-09 (121 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
InterpreterPath: /usr/bin/python3.4
MachineType: TOSHIBA Satellite U400
ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-17-generic root=UUID=9d9d9d28-df78-475d-af30-72b9ecb189be ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-17-generic N/A
 linux-backports-modules-3.13.0-17-generic N/A
 linux-firmware 1.126
SourcePackage: linux
Title: [TOSHIBA Satellite U400] suspend/resume failure
UpgradeStatus: Upgraded to trusty on 2014-03-02 (8 days ago)
UserGroups:

dmi.bios.date: 10/25/2010
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V4.70
dmi.board.name: Satellite U400
dmi.board.vendor: TOSHIBA
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV4.70:bd10/25/2010:svnTOSHIBA:pnSatelliteU400:pvrPSU40A-01M001:rvnTOSHIBA:rnSatelliteU400:rvrNotApplicable:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite U400
dmi.product.version: PSU40A-01M001
dmi.sys.vendor: TOSHIBA

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc6-trusty/

[Tim Richardson (tim-richardson)]

3.13.6-031306-generic
kernel-bug-exists-upstream

[Joseph Salisbury (jsalisbury)]

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org.

Once this bug is reported upstream, please add the tag: 'kernel-bug-reported-upstream'.

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel

[Tim Richardson (tim-richardson)]

upstream report
https://bugs.freedesktop.org/show_bug.cgi?id=76520

[Tim Richardson (tim-richardson)]

Note: it is not an upstream bug.

I can not reproduce it like so:
go to terminal
sudo service lightdm stop
pm-suspend

this always works, with 3.11.10, 3.12.14, 3.13.6 and 3.14 rc7

However, when lightdm is running, does not resume.

[Tim Richardson (tim-richardson)]

testing reveals that the bug is linked to lightdm
It is not reproducible when lightdm is not running. When lightdm is running, a wide range of kernels show the resume fail. These kernels do not fail resume when lightdm is not running

[Tim Richardson (tim-richardson)]

this is a kernel bug. git bisect completed and reported on the upstream report https://bugs.freedesktop.org/show_bug.cgi?id=76520

[Tim Richardson (tim-richardson)]

this is a kernel bug

[Özgür Baskin (ozgur-baskin)]

I have same model of Toshiba and I am having same problem with Linuxmint 17. Resume from suspend freezing the laptop with blank screen(no backlight on LCD panel).

[Tim Richardson (tim-richardson)]

Follow the upstream bug.perhaps you can help with testing.

[Özgür Baskin (ozgur-baskin)]

I just revert back to Linuxmint 16 kernel on linuxmint 17 and everything working again as expected.

Actually not Linuxmint 16 original kernel. Just downloaded latest saucy kernel from mainline/v3.11.10.11-saucy and installed to my Linuxmint 17 system.

Note: I also tested mainline/v3.15-utopic kernel and unfortunately problem still exist.

[Tim Richardson (tim-richardson)]

The good news is that just an hour ago the Intel engineer and I finished testing the fix, so it will go into the kernel soon (I don't know when). Ubuntu kernel developers will pick it up I expect.

[Özgür Baskin (ozgur-baskin)]

I am following upstream bug report. I saw the progress. I will test mainline kernel after released with this fix, then write here about my result. Thank you for your interest about this very annoying bug.

[Tim Richardson (tim-richardson)]

the patch for this has been added to stable kernels 3.15 and 3.14 so I hope it gets picked up by Ubuntu soon.

"""
This is a note to let you know that I've just added the patch titled

    drm/i915: Avoid div-by-zero when pixel_multiplier is zero

to the 3.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-i915-avoid-div-by-zero-when-pixel_multiplier-is-zero.patch
and it can be found in the queue-3.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <email address hidden> know about it.

From 2b85886a5457f5c5dbcd32edbd4e6bba0f4e8678 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <email address hidden>
Date: Mon, 9 Jun 2014 16:20:46 +0300
Subject: drm/i915: Avoid div-by-zero when pixel_multiplier is zero
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Ville Syrjälä <email address hidden>

commit 2b85886a5457f5c5dbcd32edbd4e6bba0f4e8678 upstream.
"""

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.