-- PLEASE DISREGARD MY PREVIOUS COMMENT -- The suspend issue is not present on 4.4.6 mainline kernel. So this must be some issue with some additional patching that is done to the official kernel. Meanwhile, I also went back to the 4.4.5 kernel and it suspends and resumes flawlessly.
---- Besides that, I noticed that 4.4.7 is not without its share of problems. First of all, it displays an error on boot stating that radeon VCE failed to initialize (I have a dedicate AMD GPU on my laptop, besides the Intel GPU bundled with the CPU). This is a minor thing (I guess). However, the more concerning issue I noticed is that resuming from a suspended state, I just can't shutdown or reboot the system. It freezes while shutting down on a black screen with a white blinking cursor. I waited for a while and nothing happened. This is probably unrelated with the rest of the bug. Notwithstanding, I thought that I should mention it just so that you are aware that 4.4.7 also introduces a few issues, even though it seems to be unaffected by the suspending issues that I've been facing on the official 4.4.0-18 kernel. -- 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