Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 stable kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8.17/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: kernel-da-key -- 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/1659623 Title: Shutdown/reboot hang on Dell XPS 15 9550 BIOS 1.2.18+ Status in linux package in Ubuntu: Incomplete Bug description: On Dell XPS 15 9550 BIOS 1.2.18+, shutdown/reboot job is delayed for several seconds in Ubuntu kernel. After shutdown screen appears and all shutdown sequence had been done, the power LED turns off; however the front LED is flashing in orange for several seconds and the system finally turns off. Rebooting is also not working: front LED flashes in orange and the system just turns off. Switching to mainline kernel 4.9.6, or downgrading to BIOS 1.2.16 solved the problem. Other Linux distro users didn't observed the problem, see also: * https://www.reddit.com/r/Dell/comments/5przxq/new_dell_xps_15_9550_bios_1219/ * https://www.reddit.com/r/Dell/comments/5l9n3b/xps_15_9550_bios_1218_ubuntu_1610_shutdown_problem/ ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-4.8.0-34-generic 4.8.0-34.36 ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11 Uname: Linux 4.8.0-34-generic x86_64 ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: psj 5638 F.... pulseaudio CurrentDesktop: KDE Date: Thu Jan 26 19:17:24 2017 HibernationDevice: RESUME=UUID=2cfb78ae-e2b8-4d3a-9ab2-a61ae1a79fd1 InstallationDate: Installed on 2016-01-21 (371 days ago) InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: Dell Inc. XPS 15 9550 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-34-generic root=UUID=db90ced3-4cfe-4001-b877-d4aa35e7260f ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.8.0-34-generic N/A linux-backports-modules-4.8.0-34-generic N/A linux-firmware 1.161.1 SourcePackage: linux UpgradeStatus: Upgraded to yakkety on 2016-10-14 (103 days ago) dmi.bios.date: 12/22/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.2.19 dmi.board.asset.tag: ainazi dmi.board.name: 0N7TVV dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.asset.tag: ainazi dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.2.19:bd12/22/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 15 9550 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1659623/+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
