Ok, and like Jan, I managed to fixed things by one hibernation cycle with power plugged in, and one with no power connected.
So it almost sounds like some weird bug in the laptop's acpi or bios or so, and I don't think this is an issues with Linux or Ubuntu. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1661741 Title: [Dell Inc. Latitude E5470] suspend/resume failure Status in linux package in Ubuntu: Confirmed Bug description: To generate the crash: 1) Suspend the system (e.g. choose suspend from the top menu). 2) At any point, unplug the cord (the bug happens if I unplug at any point after suspend, even if I then replug before I resume) 3) Try to resume (pressing power button). Computer reboots. What should happen: Regular resume from suspend. (If I leave the computer plugged in, resume works fine.) I have performed the tests at https://wiki.ubuntu.com/DebuggingKernelSuspend and included the results. Note that the computer never crashes during any of the tests except when /sys/power/pm_test is 'none'. This appears the same/similar to #bug #1645758 but I dont't know how to add to the apport info to that bug instead of filing my own. ProblemType: KernelOops DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-37-generic 4.8.0-37.39 ProcVersionSignature: Ubuntu 4.8.0-37.39-generic 4.8.16 Uname: Linux 4.8.0-37-generic x86_64 Annotation: This occurred during a previous suspend, and prevented the system from resuming properly. ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ganc 2892 F.... pulseaudio Date: Thu Dec 22 07:09:27 2016 DuplicateSignature: suspend/resume:Dell Inc. Latitude E5470:1.11.4 ExecutablePath: /usr/share/apport/apportcheckresume Failure: suspend/resume HibernationDevice: RESUME=UUID=a7e5c256-744c-41e6-823b-befb5f5c63f6 InstallationDate: Installed on 2017-01-31 (-39 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) InterpreterPath: /usr/bin/python3.5 Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 004: ID 0bda:5686 Realtek Semiconductor Corp. Bus 001 Device 003: ID 0a5c:5832 Broadcom Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Latitude E5470 ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-37-generic.efi.signed root=UUID=1eb743a3-00e0-430e-be35-9748390e53f3 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-4.8.0-37-generic N/A linux-backports-modules-4.8.0-37-generic N/A linux-firmware 1.161.1 SourcePackage: linux Title: [Dell Inc. Latitude E5470] suspend/resume failure UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 12/22/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.11.4 dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.11.4:bd12/22/2016:svnDellInc.:pnLatitudeE5470:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E5470 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1661741/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
