1. All those information has been provided in the comments, I don't understand what you mean. Anyway, I will answer those questions one by one.
Which part of the process does the issue occur with, the suspend to ram, or resuming from? suspend to ram 2. Please advise how you suspended specifically. For example: suspension failed in any way, first clipping my laptop screen doesn't work, executing pm-suspend or clicking the suspend button in gnome don't work either. 3. While booted into the latest non-daily mainline kernel, execute at a terminal: cat /proc/acpi/wakeup > wakeup content: Device S-state Status Sysfs node PEG2 S4 *disabled PEGP S4 *disabled RP09 S4 *disabled PXSX S4 *disabled RP10 S4 *disabled PXSX S4 *disabled RP11 S4 *disabled PXSX S4 *disabled RP12 S4 *disabled PXSX S4 *disabled RP13 S4 *disabled PXSX S4 *disabled RP01 S4 *disabled pci:0000:00:1c.0 PXSX S4 *disabled RP02 S4 *disabled PXSX S4 *disabled RP03 S4 *disabled PXSX S4 *disabled RP04 S4 *disabled PXSX S4 *disabled RP05 S4 *disabled pci:0000:00:1c.4 PXSX S4 *enabled pci:0000:04:00.0 RP06 S4 *disabled pci:0000:00:1c.5 PXSX S4 *disabled pci:0000:05:00.0 RP07 S4 *disabled pci:0000:00:1c.6 PXSX S4 *disabled pci:0000:06:00.0 *disabled platform:rtsx_pci_sdmmc.0 *disabled platform:rtsx_pci_ms.0 RP08 S4 *disabled PXSX S4 *disabled RP17 S4 *disabled PXSX S4 *disabled RP18 S4 *disabled PXSX S4 *disabled RP19 S4 *disabled PXSX S4 *disabled RP20 S4 *disabled PXSX S4 *disabled RP14 S4 *disabled PXSX S4 *disabled RP15 S4 *disabled PXSX S4 *disabled RP16 S4 *disabled PXSX S4 *disabled PEG1 S4 *disabled pci:0000:00:01.0 PEGP S4 *disabled PEG0 S4 *disabled pci:0000:00:01.1 PEGP S4 *disabled pci:0000:02:00.0 XHC S3 *enabled pci:0000:00:14.0 XDCI S4 *disabled HDAS S4 *disabled pci:0000:00:1f.3 LID0 S3 *enabled platform:PNP0C0D:00 3. While booted into the latest non-daily mainline kernel, execute at a terminal: sudo su echo freezer > /sys/power/pm_test exit Please attach to your report the resume trace mentioned below. While booted into the latest non-daily mainline kernel, execute at a terminal: sudo su echo devices > /sys/power/pm_test exit Please attach to your report the resume trace mentioned below. While booted into the latest non-daily mainline kernel, execute at a terminal: sudo su echo platform > /sys/power/pm_test exit Please attach to your report the resume trace mentioned below. While booted into the latest non-daily mainline kernel, execute at a terminal: sudo su echo processors > /sys/power/pm_test exit Please attach to your report the resume trace mentioned below. While booted into the latest non-daily mainline kernel, execute at a terminal: sudo su echo core > /sys/power/pm_test exit Please attach to your report the resume trace mentioned below. While booted into the latest non-daily mainline kernel, execute at a terminal: sudo su echo none > /sys/power/pm_test exit Please attach to your report the resume trace mentioned below. Please provide the output of the following terminal command: cat /sys/kernel/debug/suspend_stats I ran those tests in a script, the commands and output can be find in the attachment of comment #17 -- 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/1550879 Title: [Dell Inc. Inspiron 7559] suspend/resume failure Status in linux package in Ubuntu: Incomplete Bug description: When using command of pm-suspend, the machine might be suspended, but cannot be waken either by clicking the keyboard or power button. Sometimes the suspension will fail too. ProblemType: KernelOops DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-8-generic 4.4.0-8.23 ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic x86_64 Annotation: This occurred during a previous suspend, and prevented the system from resuming properly. ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: pjm 2439 F...m pulseaudio /dev/snd/controlC0: pjm 2439 F.... pulseaudio Date: Sun Feb 28 15:30:13 2016 DuplicateSignature: suspend/resume:Dell Inc. Inspiron 7559:1.1.3 ExecutablePath: /usr/share/apport/apportcheckresume Failure: suspend/resume HibernationDevice: RESUME=UUID=447ec3f7-71bc-498d-ba0f-03ed68deccf2 InstallationDate: Installed on 2016-02-27 (0 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160225) InterpreterPath: /usr/bin/python3.5 MachineType: Dell Inc. Inspiron 7559 ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic.efi.signed root=UUID=d19074ca-3e53-4e29-b6ba-95daa56f7da0 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-4.4.0-8-generic N/A linux-backports-modules-4.4.0-8-generic N/A linux-firmware 1.156 SourcePackage: linux Title: [Dell Inc. Inspiron 7559] suspend/resume failure UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: dmi.bios.date: 11/05/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.3 dmi.board.name: 0H87XC dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvr1.1.3:bd11/05/2015:svnDellInc.:pnInspiron7559:pvr1.1.3:rvnDellInc.:rn0H87XC:rvrA00:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Inspiron 7559 dmi.product.version: 1.1.3 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550879/+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