We cannot find any logs in var/log related to the failed boots, tried grepping the kernel version, journalctl --list-boots
** Attachment added: "dmesg after booted with 4.4" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1830951/+attachment/5267457/+files/dmesg.log ** Tags added: apport-collected bionic ** Description changed: We have a few 2010 mac pro running 1604 LTS that are just upgraded to Ubuntu 1804 LTS. While they all worked fine with the 1604 LTS and 4.4 kernel, they can no longer boot with the 4.15.0-50 kernel installed with 1804. We tried various kernel flags without luck, and installed latest 4.18.0-20 from HWE and got the same result. Unfortunately, no logs are created in /var/logs when the issue happens, and we could only boot with the old 4.4 kernel. We had to enable earlyprintk=efi to get a backtrace in a photo. The issue happens consistently, i.e. the backtrace looks always the same just happens on different cores. Attached the boot-info output and the picture taken at the end of the kernel loading. + --- + ProblemType: Bug + ApportVersion: 2.20.9-0ubuntu7.6 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC2: steventang 2047 F.... pulseaudio + /dev/snd/controlC0: steventang 2047 F.... pulseaudio + /dev/snd/controlC1: steventang 2047 F.... pulseaudio + CurrentDesktop: ubuntu:GNOME + DistroRelease: Ubuntu 18.04 + HibernationDevice: RESUME=UUID=a7ceb7f0-6040-4236-ad7d-35780a1dc870 + InstallationDate: Installed on 2019-05-28 (0 days ago) + InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) + MachineType: Apple Inc. MacPro5,1 + NonfreeKernelModules: wl + Package: linux (not installed) + ProcFB: 0 radeondrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-148-generic root=UUID=8d18bfd8-303b-4397-9216-a0e48cb6ef54 ro quiet splash + ProcVersionSignature: Ubuntu 4.4.0-148.174-generic 4.4.177 + RelatedPackageVersions: + linux-restricted-modules-4.4.0-148-generic N/A + linux-backports-modules-4.4.0-148-generic N/A + linux-firmware 1.173.6 + Tags: bionic + Uname: Linux 4.4.0-148-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo + _MarkForUpload: True + dmi.bios.date: 08/08/17 + dmi.bios.vendor: Apple Inc. + dmi.bios.version: MP51.88Z.0084.B00.1708080528 + dmi.board.asset.tag: 0 + dmi.board.name: Mac-F221BEC8 + dmi.board.vendor: Apple Inc. + dmi.chassis.type: 7 + dmi.chassis.vendor: Apple Inc. + dmi.chassis.version: Mac-F221BEC8 + dmi.modalias: dmi:bvnAppleInc.:bvrMP51.88Z.0084.B00.1708080528:bd08/08/17:svnAppleInc.:pnMacPro5,1:pvr0.0:rvnAppleInc.:rnMac-F221BEC8:rvr:cvnAppleInc.:ct7:cvrMac-F221BEC8: + dmi.product.name: MacPro5,1 + dmi.product.version: 0.0 + dmi.sys.vendor: Apple Inc. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1830951 Title: kernel panic: stack corrupted in efivar_ssdt_iter+0xd3/0xe8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1830951/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
