Please try the patch mentioned here: https://lkml.org/lkml/2014/12/1/790
If it works, it would be nice to tell the authors to get it included in the mainline kernel. I've already told them, but one man is probably not enough. (I'm not sure if it's included already, and currently I have no time to test.) -- 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/1396889 Title: [Lenovo ThinkPad T400] kexec reboot fails Status in linux package in Ubuntu: Triaged Bug description: After release upgrade to Utopic, when I reboot with kexec (simply with "reboot" command), my computer cold reboots after "Starting new kernel" (i.e. I need to get through the POST and GRUB), instead of the new kernel being loaded. Previously I didn't experience problems with Trusty. It matters which kernel I try to boot, while it doesn't matter what kernel I kexec from, and which version of kexec-tools I have. I can't boot 3.16.0-25, nor 3.18.0-031800rc6 from any installed kernels, while I can boot 3.13.0-39 from any kernels without any problems. I tried to downgrade kexec-tools from 1:2.0.7-1ubuntu2 (utopic) to 1:2.0.6-0ubuntu2.1 (trusty), but it made no difference. I have a Lenovo Thinkpad T400. I didn't experience the same on my other machines, so I suspect some hardware-dependent issue. ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-25-generic 3.16.0-25.33 ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7 Uname: Linux 3.16.0-25-generic x86_64 ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: megabrutal 2497 F.... pulseaudio /dev/snd/seq: timidity 1420 F.... timidity Date: Thu Nov 27 07:40:07 2014 HibernationDevice: RESUME=UUID=3d113c6f-7cf8-477f-81e1-857aa62102c2 InstallationDate: Installed on 2014-06-10 (169 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: LENOVO 6474B84 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcEnviron: LANGUAGE=hu TERM=xterm PATH=(custom, no user) LANG=hu_HU.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-25-generic root=/dev/mapper/thinkvg-rootlv ro rootflags=subvol=@ PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.16.0-25-generic N/A linux-backports-modules-3.16.0-25-generic N/A linux-firmware 1.138 SourcePackage: linux UpgradeStatus: Upgraded to utopic on 2014-11-11 (15 days ago) dmi.bios.date: 04/22/2009 dmi.bios.vendor: LENOVO dmi.bios.version: 7UET66WW (2.16 ) dmi.board.name: 6474B84 dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr7UET66WW(2.16):bd04/22/2009:svnLENOVO:pn6474B84:pvrThinkPadT400:rvnLENOVO:rn6474B84:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 6474B84 dmi.product.version: ThinkPad T400 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396889/+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
