https://bugzilla.suse.com/show_bug.cgi?id=1227345 https://bugzilla.suse.com/show_bug.cgi?id=1227345#c7 --- Comment #7 from Maxime Thirion <maxime.thirion@r-virtuel.net> --- Before kernel 6.9, all processor cores were active despite the NOAPIC option. On the server with the i7, updates are applied 1x a week with automatic reboot. The server has therefore been through all kernels since it was installed, and the problem only started with 6.9. The two machines were installed in early 2022. As I haven't touched the Xeon yet, here are a few parameters: kutta:~ # uname -a Linux kutta.r-virtuel.net 6.4.6-1-default #1 SMP PREEMPT_DYNAMIC Tue Jul 25 04:42:30 UTC 2023 (55520bc) x86_64 x86_64 x86_64 GNU/Linux kutta:~ # lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 39 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 8 On-line CPU(s) list: 0-7 Vendor ID: GenuineIntel BIOS Vendor ID: Intel(R) Corporation Model name: Intel(R) Xeon(R) CPU E3-1275 v5 @ 3.60GHz BIOS Model name: Intel(R) Xeon(R) CPU E3-1275 v5 @ 3.60GHz To Be Filled By O.E.M. CPU @ 3.6GHz BIOS CPU family: 179 CPU family: 6 Model: 94 Thread(s) per core: 2 Core(s) per socket: 4 Socket(s): 1 Stepping: 3 CPU(s) scaling MHz: 92% CPU max MHz: 4000.0000 CPU min MHz: 800.0000 BogoMIPS: 7202.00 [...] kutta:~ # cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.4.6-1-default root=UUID=8a392962-8a90-4306-8d47-919298279afd noapic quiet security=apparmor mitigations=auto kutta:~ # cat /etc/default/grub # If you change this file, run 'grub2-mkconfig -o /boot/grub2/grub.cfg' afterwards to update # /boot/grub2/grub.cfg. # Uncomment to set your own custom distributor. If you leave it unset or empty, the default # policy is to determine the value from /etc/os-release GRUB_DISTRIBUTOR= GRUB_DEFAULT=saved GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=0 GRUB_CMDLINE_LINUX_DEFAULT="noapic quiet security=apparmor mitigations=auto" GRUB_CMDLINE_LINUX="" # Uncomment to automatically save last booted menu entry in GRUB2 environment # variable `saved_entry' # GRUB_SAVEDEFAULT="true" #Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) # GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" #Uncomment to disable graphical terminal (grub-pc only) GRUB_TERMINAL="gfxterm" # The resolution used on graphical terminal #note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' GRUB_GFXMODE="auto" # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux # GRUB_DISABLE_LINUX_UUID=true #Uncomment to disable generation of recovery mode menu entries # GRUB_DISABLE_RECOVERY="true" #Uncomment to get a beep at grub start # GRUB_INIT_TUNE="480 440 1" GRUB_BACKGROUND= GRUB_THEME=/boot/grub2/themes/openSUSE/theme.txt SUSE_BTRFS_SNAPSHOT_BOOTING="true" GRUB_DISABLE_OS_PROBER="false" GRUB_ENABLE_CRYPTODISK="n" -- You are receiving this mail because: You are on the CC list for the bug.