On testing hibernation, the screen first blanked out for half a second, then showed the desktop again, but unresponsive. I clicked the power button, it turned off, then clicked the power button again, and it resumed fine with my terminal open. So hibernation "works" except, like with "systemctl poweroff" it doesn't actually power off.
** Attachment added: "sudo fwts -P" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463422/+attachment/4412080/+files/fwts-P.results.log -- 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/1463422 Title: Lenovo A740 doesn't poweroff on shutdown Status in linux package in Ubuntu: Confirmed Bug description: If I do "systemctl poweroff" or use any GUI to try to shut down, it gets to the stage of [ OK ] Reached target Shutdown reboot: System halted but just sits there unresponsive, and does not actually power down. Similarly, if I try running "fwts -P", the hibernate test seems like it crashes the computer (screen is on but unresponsive), then if I click the power button twice, it resumes from hibernation just fine. If I try to reboot, it's almost the same, except the display shows weird psychedelic lines and colours, but everything is unresponsive and I have to click (and this time *hold* not just simple click) the power button. I can reboot fine from GRUB with ctrl+alt+delete. I've kept the Windows partition that came with the computer, that also powers down and reboots fine. If I click the power button while Ubuntu is started, it powers off immediately. I originally asked a question at https://askubuntu.com/questions/632591/system-does-not-power-off-on- poweroff-just-halts but I don't think it has an answer since this seems more likely to be a kernel bug. The system is a Lenovo IdeaCentre A740, running 15.04 (UEFI-installed), Linux 3.19.0-18 x86_64 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-18-generic 3.19.0-18.18 ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6 Uname: Linux 3.19.0-18-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: kiwibird 1481 F.... pulseaudio CurrentDesktop: XFCE Date: Tue Jun 9 15:41:05 2015 HibernationDevice: RESUME=UUID=dc4226ca-3ebe-4611-95ac-c1a0ccbb7d7a InstallationDate: Installed on 2015-06-04 (5 days ago) InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1) MachineType: LENOVO F0AM ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic.efi.signed root=UUID=91533e8a-b5ca-4447-8c4a-b5bb2d095238 ro noprompt persistent RelatedPackageVersions: linux-restricted-modules-3.19.0-18-generic N/A linux-backports-modules-3.19.0-18-generic N/A linux-firmware 1.143.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux StagingDrivers: r8723au UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/30/2014 dmi.bios.vendor: LENOVO dmi.bios.version: O00KT19AUS dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900058 STD dmi.chassis.type: 13 dmi.chassis.vendor: LENOVO dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnLENOVO:bvrO00KT19AUS:bd09/30/2014:svnLENOVO:pnF0AM:pvrLenovoA740:rvnLENOVO:rnINVALID:rvr31900058STD:cvnLENOVO:ct13:cvrChassisVersion: dmi.product.name: F0AM dmi.product.version: Lenovo A740 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463422/+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
