Tested with upstream kernel vmlinuz-3.18.0-031800rc2-generic. The problem of an off-line CPU remains:
$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 2 On-line CPU(s) list: 0 Off-line CPU(s) list: 1 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 23 Stepping: 10 CPU MHz: 3200.000 BogoMIPS: 6399.96 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 2048K NUMA node0 CPU(s): 0 But the reason seems to be somewhat different, altho it is still question of a cpu which does not respond (in time): $ dmesg | grep -i smp [ 0.000000] Linux version 3.18.0-031800rc2-generic (apw@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201410281737 SMP Tue Oct 28 21:38:57 UTC 2014 [ 0.000000] found SMP MP-table at [mem 0x000f53c0-0x000f53cf] mapped at [ffff8800000f53c0] [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] smpboot: Allowing 4 CPUs, 2 hotplug CPUs [ 0.023851] Freeing SMP alternatives memory: 28K (ffffffff81e7d000 - ffffffff81e84000) [ 0.092136] smpboot: CPU0: Intel Pentium(R) Dual-Core CPU E6700 @ 3.20GHz (fam: 06, model: 17, stepping: 0a) [ 0.096000] x86: Booting SMP configuration: [ 10.104071] smpboot: do_boot_cpu failed(-1) to wakeup CPU#1 [ 10.104102] smpboot: Total of 1 processors activated (6399.96 BogoMIPS) I have done this boot 3 times and the result is consistent. Recall thatI have to have devices connected to an external USB hub to provoke the error. -- 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/1386790 Title: [Gigabyte G31M-ES2L] Kernel panic CPU1 did not get callout Status in “linux” package in Ubuntu: Incomplete Bug description: When booting with a D-Link USB hub connected, the boot process "finds" only one core of my dual-core CPU: $ dmesg | grep -i smp [ 0.000000] Linux version 3.13.0-37-generic (buildd@kapok) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 (Ubuntu 3.13.0-37.64-generic 3.13.11.7) [ 0.000000] found SMP MP-table at [mem 0x000f53c0-0x000f53cf] mapped at [ffff8800000f53c0] [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] smpboot: Allowing 4 CPUs, 2 hotplug CPUs [ 0.020375] Freeing SMP alternatives memory: 32K (ffffffff81e6e000 - ffffffff81e76000) [ 0.123368] smpboot: CPU0: Intel Pentium(R) Dual-Core CPU E6700 @ 3.20GHz (fam: 06, model: 17, stepping: 0a) [ 0.124000] x86: Booting SMP configuration: [ 10.160714] smpboot: CPU1: Not responding [ 10.160748] smpboot: Total of 1 processors activated (6399.99 BogoMIPS) [ 0.124000] Kernel panic - not syncing: smp_callin: CPU1 started up but did not get a callout! With the USB hub unplugged, the boot always "finds" the CPU: $ dmesg | grep -i smp [ 0.000000] Linux version 3.13.0-37-generic (buildd@kapok) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 (Ubuntu 3.13.0-37.64-generic 3.13.11.7) [ 0.000000] found SMP MP-table at [mem 0x000f53c0-0x000f53cf] mapped at [ffff8800000f53c0] [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] smpboot: Allowing 4 CPUs, 2 hotplug CPUs [ 0.010389] Freeing SMP alternatives memory: 32K (ffffffff81e6e000 - ffffffff81e76000) [ 0.061061] smpboot: CPU0: Intel Pentium(R) Dual-Core CPU E6700 @ 3.20GHz (fam: 06, model: 17, stepping: 0a) [ 0.064000] x86: Booting SMP configuration: [ 0.074763] smpboot: Total of 2 processors activated (12799.47 BogoMIPS) Why does a CPu not respond quickly enough because of a hub? Or is it Linux which is too hasty? Or something else? In any case, it is bothersome not to be able to use the USB hub. I am using Ubuntu 14.04.1 LTS with KDE, aka Kubuntu. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-37-generic 3.13.0-37.64 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: jon 2453 F.... pulseaudio jon 2809 F.... pulseaudio /dev/snd/controlC0: jon 2453 F.... pulseaudio jon 2809 F.... pulseaudio CurrentDesktop: KDE Date: Tue Oct 28 17:34:10 2014 HibernationDevice: RESUME=UUID=a10df41c-1508-4381-bb09-0b6992378272 InstallationDate: Installed on 2014-10-25 (3 days ago) InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. G31M-ES2L ProcFB: 0 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=7efb481c-5492-4093-9000-a5be0fc30152 ro RelatedPackageVersions: linux-restricted-modules-3.13.0-37-generic N/A linux-backports-modules-3.13.0-37-generic N/A linux-firmware 1.127.7 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/09/2010 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: FI dmi.board.name: G31M-ES2L dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrFI:bd08/09/2010:svnGigabyteTechnologyCo.,Ltd.:pnG31M-ES2L:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnG31M-ES2L:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: G31M-ES2L dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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