This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 2100999
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that and change the
bug status to 'Confirmed'.
** Changed in: linux-meta-hwe-6.11 (Ubuntu)
Status: New => Triaged
** Changed in: linux-meta-hwe-6.11 (Ubuntu)
Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)
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https://bugs.launchpad.net/bugs/2100999
Title:
linux-generic-hwe-24.04 version 6.11.0-19.19~24.04.1 fail to properly
detect CPU core and thread count with 'noapic'
Status in linux-meta-hwe-6.11 package in Ubuntu:
Triaged
Bug description:
After doing `sudo apt upgrade`, the above mentioned linux hwe kernel
was installed.
Start-Date: 2025-03-05 15:02:08
Commandline: apt upgrade
Requested-By: user (1000)
Install: linux-objects-nvidia-470-6.11.0-19-generic:amd64
(6.11.0-19.19~24.04.1, automatic), linux-hwe-6.11-tools-6.11.0-19:amd64
(6.11.0-19.19~24.04.1, automatic), linux-modules-extra-6.11.0-19-generic:amd64
(6.11.0-19.19~24.04.1, automatic),
linux-modules-nvidia-470-6.11.0-19-generic:amd64 (6.11.0-19.19~24.04.1,
automatic), linux-image-6.11.0-19-generic:amd64 (6.11.0-19.19~24.04.1,
automatic), linux-tools-6.11.0-19-generic:amd64 (6.11.0-19.19~24.04.1,
automatic), linux-signatures-nvidia-6.11.0-19-generic:amd64
(6.11.0-19.19~24.04.1, automatic), linux-hwe-6.11-headers-6.11.0-19:amd64
(6.11.0-19.19~24.04.1, automatic), linux-headers-6.11.0-19-generic:amd64
(6.11.0-19.19~24.04.1, automatic), linux-modules-6.11.0-19-generic:amd64
(6.11.0-19.19~24.04.1, automatic)
Upgrade: linux-headers-generic-hwe-24.04:amd64 (6.8.0-52.53,
6.11.0-19.19~24.04.1), linux-generic-hwe-24.04:amd64 (6.8.0-52.53,
6.11.0-19.19~24.04.1), linux-tools-common:amd64 (6.8.0-54.56, 6.8.0-55.57),
google-chrome-stable:amd64 (133.0.6943.141-1, 134.0.6998.35-1),
linux-modules-nvidia-470-generic-hwe-24.04:amd64 (6.8.0-52.53,
6.11.0-19.19~24.04.1), linux-image-generic-hwe-24.04:amd64 (6.8.0-52.53,
6.11.0-19.19~24.04.1), linux-libc-dev:amd64 (6.8.0-54.56, 6.8.0-55.57)
End-Date: 2025-03-05 15:03:19
After rebooting, the new linux kernel fails to correctly detect the
CPU core and thread count. This system CPU has 16 cores, 32 threads
and System Monitor normally shows 32 CPU virtual cores. After the
upgrade, System Monitor now shows only 1 CPU virtual core. The upgrade
corrupted my system.
To circumvent this issue, I have to boot Ubuntu 24.04 using the
linux-image-6.8.0-52-generic 6.8.0-52.53 kernel and not use the hwe kernel.
I have submitted the relevant `ubuntu-bug` report.
How do I fix this issue?
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubuntu-release-upgrader-core 1:24.04.22 [origin: unknown]
ProcVersionSignature: Ubuntu 6.11.0-19.19~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-19-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CrashReports: 640:1000:109:51661892:2025-03-03 02:30:21.363597393
+0800:2025-03-04 00:28:42.503056252
+0800:/var/crash/_opt_brave.com_brave_brave.1000.crash
CurrentDesktop: ubuntu:GNOME
Date: Thu Mar 6 12:16:18 2025
InstallationDate: Installed on 2024-12-07 (89 days ago)
InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64
(20240827.1)
PackageArchitecture: all
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
XDG_RUNTIME_DIR=<set>
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
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