How can I identify the reason why my system was frozen while that booted?

So, the question is given:
How can I identify the reason why my system was frozen while that booted?
Thanks in advance.

Hi @ZaeNae,

You should be able to see with:

journalctl --priority=warning..crit --no-pager --boot=-1

Where:

  • The --priority=warning..err argument limits the output to warnings and errors only;
  • and the --no-pager formats the output nicely for use here, on the forum;
  • the --boot=-1 argument limits the output to log messages from the previous boot. This can be adjusted to -2 for the boot before that, -3 to the boot before that, and so on and so forth.
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I had two freeze and the messages are the same, here:

júl 02 16:47:47 gf63thin10scxr-hd kernel: x86/cpu: SGX disabled by BIOS.
júl 02 16:47:47 gf63thin10scxr-hd kernel: MMIO Stale Data CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/processor_mmio_stale_data.html for more details.
júl 02 16:47:47 gf63thin10scxr-hd kernel: ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
júl 02 16:47:47 gf63thin10scxr-hd kernel: usb: port power management may be unreliable
júl 02 16:47:47 gf63thin10scxr-hd kernel: nvme nvme0: failed to set APST feature (2)
júl 02 16:47:47 gf63thin10scxr-hd kernel: usb 1-3.2: device descriptor read/64, error -32
júl 02 16:47:47 gf63thin10scxr-hd kernel: usb 1-3.2: device descriptor read/64, error -32
júl 02 16:47:47 gf63thin10scxr-hd kernel: usb 1-3.2: device descriptor read/64, error -32

Interesting, because my laptop has two OS installed and only the first has this problem. The second system boots normally.

Here is an example from there:

16:18:18 gf63thin10scxr-sd kernel: x86/cpu: SGX disabled by BIOS.
16:18:18 gf63thin10scxr-sd kernel: MMIO Stale Data CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/processor_mmio_stale_data.html for more details.
16:18:18 gf63thin10scxr-sd kernel: ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
16:18:18 gf63thin10scxr-sd kernel: usb: port power management may be unreliable
16:18:18 gf63thin10scxr-sd kernel: nvme nvme0: failed to set APST feature (2)
16:18:18 gf63thin10scxr-sd kernel: systemd[1]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set
16:18:18 gf63thin10scxr-sd kernel: kauditd_printk_skb: 2 callbacks suppressed
16:18:18 gf63thin10scxr-sd kernel: msi_ec: Firmware version is not supported: '16R4EMS1.101'

Have you tried a different kernel? For example, 6.1:

sudo mhwd-kernel --install linux61

More interesting thing, that OS booted well, after i installed some new sofwares.
Anyway, I give you the solution. Maybe in another topic I will bring up the issue again.
Thank you.

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