I encountered the issue again after upgrading to the the latest upstream kernel[0]. After booting with the new kernel version, I verified outputs from `uname` (all as expected) and `dmesg | egrep -i 'error|critical|failed'` (as expected) and then closed my laptop lid while it was connected to AC power. It remained connected to AC power until approximately 4:35, at which point I removed the AC power and placed the laptop in my backpack without opening the lid. At about 5:45, I opened my laptop's lid while on battery power and encountered the same problem as before. I tried all possible orders of "closing the lid", "connecting AC power" and "reopening the lid" but none worked, so I powered off my laptop using the power-button and booted it to find ubuntu in the same state as it was when I last used it. Then, after about 30 minutes of use, I repeated that process EXCEPT that I connected my laptop to AC power BEFORE opening the lid, and this time I did not experience any issues with resuming. I checked the output of dmesg piped to egrep (same command I mentioned earlier) and there appear to be some new messages. I have attached the new output of that command with this comment. Only the first 3 lines (false-positives from 'errors=' flag on mount) were logged last night when I checked. The rest are new and I am fairly certain that the first 2 'rebind failed' entries were logged at about the time that I removed AC power from my laptop the first time (~4:35pm). I hope that some of this information is useful to you.
[0] https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.9.tar.xz ** Attachment added: "Output of command: dmesg | egrep -i 'error|critical|failed'" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649048/+attachment/4791808/+files/dmesg_2016-12-14.log -- 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/1649048 Title: "Power off" required for resume from hybrid-sleep on AC power Status in linux package in Ubuntu: Confirmed Bug description: Due to issues with "waking from suspend", I have modified a few entries in /etc/systemd/logind.conf to use hybrid-sleep instead of suspend, namely 'HandleSuspendKey=hybrid-sleep', 'HandleLidSwitch=hybrid-sleep' and 'HandleLidSwitchDocked=hybrid-sleep'. On a few occasions now, I have closed my laptop lid while it is plugged it and when I return to it later, it does not resume on lifting the lid. The disk spins up and the fan runs as if the laptop was resuming but I am unable to do anything other than hold the power button down until it shuts down - much as I had to when I was having problems with suspend. When I hit the power button again and select the entry for Ubuntu in grub, the laptop boots to the login screen normally. When I log in, everything is just as it was when I originally closed the laptop's lid - basically "resuming" the way I had hoped. I do not believe that this is the intended behavior as I have had my computer resume from hybrid-sleep without powering it off in 16 .04 and in 16.10 (I have not, that I know of, experienced this problem while on battery power). In case it is relevant, the current values of 'Suspend when inactive for' and 'When the lid closes' in Settings > Power are "Don't suspend" (for battery and plugged in) and "Suspend" (for battery and plugged in), respectively. I will attach the output from 'cat /proc/version_signature' and 'lspci -vnvn' but I would like to add that 'sudo lspci -vnvn' sent 'pcilib: sysfs_read_vpd: read failed: Input/output error' to stderr, which was not redirected to the log file. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-30-generic 4.8.0-30.32 ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6 Uname: Linux 4.8.0-30-generic x86_64 ApportVersion: 2.20.3-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: steven 4004 F.... pulseaudio /dev/snd/controlC0: steven 4004 F.... pulseaudio CurrentDesktop: Unity Date: Sat Dec 10 22:06:19 2016 HibernationDevice: RESUME=UUID=891e7a47-9f8c-4fc9-9fe3-fe5c88ef2147 InstallationDate: Installed on 2016-11-23 (17 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) MachineType: LENOVO 20347 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-30-generic.efi.signed root=UUID=b40d7383-45c3-4885-a1df-0e534eb44fef ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.8.0-30-generic N/A linux-backports-modules-4.8.0-30-generic N/A linux-firmware 1.161 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/24/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 99CN21WW(V1.04) dmi.board.asset.tag: Std dmi.board.name: Lenovo Y40-70 dmi.board.vendor: LENOVO dmi.board.version: 31900058Std dmi.chassis.asset.tag: Std dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Y40-70 dmi.modalias: dmi:bvnLENOVO:bvr99CN21WW(V1.04):bd03/24/2014:svnLENOVO:pn20347:pvrLenovoY40-70:rvnLENOVO:rnLenovoY40-70:rvr31900058Std:cvnLENOVO:ct10:cvrLenovoY40-70: dmi.product.name: 20347 dmi.product.version: Lenovo Y40-70 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1649048/+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
