Here is a trancript of what I'm able to read on screen once the system hangs:
[ OK ] Stopped target System Initialization. [ OK ] Stopped target Encrypted Volumes. Stopping Cryptography Setup for cryptswapl... [ OK ] Stopped target Swap. Deactivating swap /dev/disk/by-uuid/a754e267-a770-4d4b-98a8-19ba7c9b9fd4... Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight... Stopping Load/Save Screen Backlight Brightness of leds:dell::kbd_backlight... [ OK ] Stopped Apply Kernel Variables. [ OK ] Stopped Load Kernel Modules. Stopping Network Time Synchronization... [ OK ] Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight. [ OK ] Stopped Load/Save Screen Backlight Brightness of leds:dell::kbd_backlight. [ OK ] Deactivated swap /dev/disk/by-uuid/a754eZ67-a770-4d4b-98a8-19ba7c9b9fd4. [ OK ] Deactivated swap /dev/disk/by-id/dm-uuid-CRYPT-PLAIN-cryptswapl. [ OK ] Deactivated swap /dev/disk/by-id/dm-name-cryptswapl. [ OK ] Deactivated swap /dev/dm-0. [FAILED] Stopped (with error) /dev/dm-0. [ OK ] Deactivated swap /dev/mapper/cryptswapl. [ OK ] Removed slice system-systemd\x2dbacklight.slice. [ OK ] Stopped Network Time Synchronization. [ OK ] Stopped Create Volatile Files and Directories. [ OK ] Stopped target Local File Systems. Unmounting /boot/efi... Unmounting /home/jorge... Unmounting /run/user/108... Unmounting /run/user/1000... [ OK ] Unmounted /boot/efi. [ OK ] Stopped File System Check on /deu/disk/by-uuid/DO7D-75AB. [ OK ] Removed slice system-systemd\x2dfsck.slice. [ OK ] Unmounted /run/user/1000. [ OK ] Unmounted /run/user/108. [ OK ] Unmounted /home/jorge. [ OK ] Stopped target Local File Systems (Pre). [ OK ] Stopped Create Static Device Nodes in /dev. [ OK ] Stopped /dev/mapper/cryptswapl. [ OK ] Stopped /dev/disk/by-uuid/a754e267-a770-4d4b-98a8-19ba7c9b9fd4. [ OK ] Stopped /dev/disk/by-id/dm-uuid-CRYPT-PLAIN-cryptswapl. [ OK ] Stopped /dev/disk/by-id/dm-name-cryptswapl. [ OK ] Stopped /sys/devices/virtual/block/dm-0. [ OK ] Stopped Cryptography Setup for cryptswapl. [ OK ] Reached target Unmount All Filesystems. [ OK ] Removed slice system-systemd\x2dcryptsetup.slice. Stopping Load/Save Random Seed... [ OK ] Stopped Load/Save Random Seed. [ OK ] Stopped Remount Root and Kernel File Systems. [ OK ] Reached target Shutdown. [ 112.7291111] reboot: Power down _ -- 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/1552985 Title: [Dell Inspiron 14 3000 Series] System hangs on poweroff Status in linux package in Ubuntu: Expired Bug description: Xubuntu 14.04.4 LTS Linux 3.13.0-79-generic #123-Ubuntu SMP Fri Feb 19 14:27:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux When shutting down the system, it gets stuck on the Xubuntu splash screen. I have to press the power button for a while to have it shut down. This is a dual boot system: Windows 10 and Xubuntu 14.04. I updated BIOS version to A10 a couple of days ago. It hanged when trying to shut down from both Windows and Xubuntu. After installing the firmware update from http://www.dell.com/support/article/mx/es/mxbsdt1/SLN300281/EN, the computer shuts down correctly from Windows, but still gets stuck when trying to shut down from Xubuntu, no matter if using the "Shutdown" button or running "shutdown -h now" or "poweroff" from a terminal. I found a similar bug here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1341925?comments=all, but the solution mentioned there did not work for me, also, I don't have any problems when rebooting the computer, just when trying to shut down. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-79-generic 3.13.0-79.123 ProcVersionSignature: Ubuntu 3.13.0-79.123-generic 3.13.11-ckt33 Uname: Linux 3.13.0-79-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jorge 2347 F.... pulseaudio /dev/snd/controlC1: jorge 2347 F.... pulseaudio CurrentDesktop: XFCE Date: Thu Mar 3 18:43:20 2016 EcryptfsInUse: Yes InstallationDate: Installed on 2014-11-18 (471 days ago) InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723) MachineType: Dell Inc. Inspiron 3442 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-79-generic.efi.signed root=UUID=bc5b1ae8-a10c-4705-afc7-3cf3c2538883 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-79-generic N/A linux-backports-modules-3.13.0-79-generic N/A linux-firmware 1.127.20 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/03/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 0260GN dmi.board.vendor: Dell Inc. dmi.board.version: A10 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA10:bd11/03/2015:svnDellInc.:pnInspiron3442:pvrNotSpecified:rvnDellInc.:rn0260GN:rvrA10:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Inspiron 3442 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. 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