So I just found this site "Ubuntu to Mainline kernel version mapping" that the official 4.4.0-18 kernel is based upon the updstream 4.4.6 kernel. So I just tried installing that version and suspend is broken. So this is something this must be something that was fixed upstream between 4.4.6 and 4.4.7.
I'm not knowledgeable enough to go through all the commits between 4.4.6 and 4.4.7 and find out exactly which one fixed the bug so that you can create a patch for it. However, I did find out that the word "suspend" is mentioned a few times in the 4.4.7's changelog: https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.7 So maybe someone else can pick up whatever is needed to fix the kernel suspend issues that I'm facing and import it as a patch to the official kernel. Or maybe you can rebase the oficial kernel to the 4.4.7 version after the oficial LTS release. I don't know if that's possible since I'm not aware of the kernel update policy. -- 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/1570820 Title: Suspend failure Status in linux package in Ubuntu: Confirmed Bug description: My laptop fails to suspend. The screen turns off, but the fans continue to run (and it may actually get hotter). I wait and wait, and nothing happens (the power indicator remains always on). I tried suspending using the GUI, pressing the power button, closing the lid, and even through the terminal with the "pm-suspend" command. Nothing worked. Suspend worked fine on Ubuntu 15.10 and older releases, but since I upgraded to 16.04 I'm unable to put it to sleep. In fact, I had an old 4.2 kernel installed from Wily. I booted into it and it suspended and then resumed flawlessly, so it really seems to be a kernel related bug. I'll gladly perform any testing procedures that you may need to try to identify what the problem may be. I really hope that you are able to fix this soon, even if it will probably after the final release. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-18-generic 4.4.0-18.34 ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6 Uname: Linux 4.4.0-18-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pedro 2579 F.... pulseaudio CurrentDesktop: GNOME Date: Fri Apr 15 12:39:05 2016 HibernationDevice: RESUME=UUID=761da9d5-d078-4fb5-a4fc-eff7de723b18 InstallationDate: Installed on 2015-10-27 (170 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: SAMSUNG ELECTRONICS CO., LTD. 870Z5E/880Z5E/680Z5E ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic.efi.signed root=UUID=8d1874c5-ce9f-481e-8d2a-ce85da5cd7fe ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-18-generic N/A linux-backports-modules-4.4.0-18-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-04-09 (5 days ago) dmi.bios.date: 04/21/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P05ADH.017.140421.SH dmi.board.asset.tag: No Asset Tag dmi.board.name: NP870Z5E-X01PT dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: SEC_SW_REVISION_1234567890ABCD dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP05ADH.017.140421.SH:bd04/21/2014:svnSAMSUNGELECTRONICSCO.,LTD.:pn870Z5E/880Z5E/680Z5E:pvrP05ADH:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP870Z5E-X01PT:rvrSEC_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A: dmi.product.name: 870Z5E/880Z5E/680Z5E dmi.product.version: P05ADH dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1570820/+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
