Sorry for delayed response. And I’m trying to quote you properly but can’t make your name appear.
Thank you very much, gnwiii. It looked to me this is the problem since nobody else is complaining .
So I tried and successfully updated UEFI-BIOS. inxi -Fzxx now reports,
UEFI: America Megatrends v: 3101 date: 09/10/2021
and rebooted in a hope that 6.8.6 runs smoothly, but failed. My box stopped at splash screen like with old BIOS. But the error looks different now.
[takemura@mocha ~]$ journalctl -b -1 -l --no-pager -p err
4月 20 15:54:46 mocha.home kernel: DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000003e2e0000-0x000000003e2fffff], contact BIOS vendor for fixes
4月 20 15:54:46 mocha.home kernel: x86/cpu: VMX (outside TXT) disabled by BIOS
4月 20 15:54:46 mocha.home kernel: x86/cpu: SGX disabled by BIOS.
4月 20 15:54:51 mocha.home kernel: Bluetooth: hci0: Malformed MSFT vendor event: 0x02
4月 20 15:54:52 mocha.home libvirtd[1156]: /dev/kvm を開けません: そのようなファイルやディレクトリはありません
4月 20 15:54:53 mocha.home kernel: BUG: scheduling while atomic: kworker/0:0/8/0x00000002
To my surprise, on kernel-6.8.4, which seems to work normally, the first [Firmware Bug] is repoted.
[takemura@mocha ~]$ journalctl -l --no-pager -b 0 | head -2
4月 20 15:55:37 mocha.home kernel: Linux version 6.8.4-100.fc38.x86_64 (mockbuild@7f6fc2c4e3a64e84a3b7c413b2fb2c2b) (gcc (GCC) 13.2.1 20240316 (Red Hat 13.2.1-7), GNU ld version 2.39-16.fc38) #1 SMP PREEMPT_DYNAMIC Thu Apr 4 20:40:57 UTC 2024
4月 20 15:55:37 mocha.home kernel: Command line: BOOT_IMAGE=(hd0,gpt2)/vmlinuz-6.8.4-100.fc38.x86_64 root=/dev/mapper/fedora_localhost--live-root ro resume=/dev/mapper/fedora_localhost--live-swap rd.lvm.lv=fedora_localhost-live/root rd.lvm.lv=fedora_localhost-live/swap rhgb quiet
[takemura@mocha ~]$ journalctl -l --no-pager -b 0 -p err
4月 20 15:55:37 mocha.home kernel: DMAR: [Firmware Bug]: No firmware reserved region can cover this RMRR [0x000000003e2e0000-0x000000003e2fffff], contact BIOS vendor for fixes
4月 20 15:55:37 mocha.home kernel: x86/cpu: VMX (outside TXT) disabled by BIOS
4月 20 15:55:37 mocha.home kernel: x86/cpu: SGX disabled by BIOS.
4月 20 15:55:43 mocha.home libvirtd[1141]: /dev/kvm を開けません: そのようなファイルやディレクトリはありません
4月 20 15:55:52 mocha.home gdm-password][2289]: gkr-pam: unable to locate daemon control file
4月 20 15:55:54 mocha.home systemd[2322]: Failed to start app-gnome-user\x2ddirs\x2dupdate\x2dgtk-2970.scope - Application launched by gnome-session-binary.
4月 20 15:58:15 mocha.home systemd[2322]: Failed to start app-gnome-plan-3662.scope - Application launched by gnome-shell.
but not in the log from 6.8.4 before BIOS update. As you see above, “soft lockup” from watchdog in 6.8.6 disappeared and the log file ended with “scheduling while atomic” right after e1000e, and the last line is
4月 20 15:54:55 mocha.home abrt-dump-journal-oops[1032]: Reported 1 kernel oops
es to Abrt
The only changes in BIOS setting from default is I turned off hyperthreading, On board LED, and enabled secure boot. These changes are the same before and after the BIOS update.
Although the BIOS update contained Intel ME frmware, the version was 12.0.6.1120, whereas ASUS web contains MEUpdateTool 12.0.81.170v4. So Intel ME firmware on my system is still old. This may be causing problem. Unfortunately, the ASUS ME updater requires Windows environment, which I have not installed on my machine. So the next step will be buying Windows CD or newer mother board ?
Now it seems to me the problem is not in the kernel but in BIIOS/firmware or my setting. I’m still at a loss but the problem seems to be unrelated to fedora.
Thank you all who joined discussion. Your advices are really helpfull. And to all who read this thread, sorry for your time.