시스템 로그 확인

$ sudo dmesg --level err -T -H

[10월18 13:07] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover t
[  +0.000007] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover th
[10월18 13:08] thunderbolt 0000:04:00.0: failed to determine connection manager,
[10월18 13:09] xhci_hcd 0000:38:00.0: PCI post-resume error -19!
[  +0.000001] xhci_hcd 0000:38:00.0: HC died; cleaning up
[10월19 06:09] thunderbolt 0000:04:00.0: failed to determine connection manager,
[10월19 06:10] xhci_hcd 0000:38:00.0: PCI post-resume error -19!
[  +0.000002] xhci_hcd 0000:38:00.0: HC died; cleaning up
[10월20 06:09] thunderbolt 0000:04:00.0: failed to determine connection manager,
[10월20 06:10] xhci_hcd 0000:38:00.0: PCI post-resume error -19!
[  +0.000003] xhci_hcd 0000:38:00.0: HC died; cleaning up

다음과 같이 확인할 수 있다.