TPM Probe Failure and Boot Issues with Ubuntu 2204

Introduction

Some users have encountered problems booting Ubuntu 2204, accompanied by errors related to the Trusted Platform Module (TPM) and PCI Express (PCIe) ports. This article investigates the causes and provides potential solutions to these issues.

TPM Probe Failure

When you run the command dmesg grep tpm_crb, you may see the following error: Probe of MSFT010100 failed with error -62 This error indicates that the TPM probe has failed. The TPM is a hardware component that provides security features for the system. A failed probe can prevent the system from booting normally.

ACPI Region Mismatch

Another issue that may occur is an ACPI region mismatch. ACPI (Advanced Configuration and Power Interface) is a specification that describes how hardware components communicate with the operating system. In this case, the ACPI region does not fully cover the command response buffer, leading to boot problems.

PCIe Port Errors

Some users have also reported errors related to PCIe ports. These errors may manifest as the system not recognizing PCIe devices or the screen displaying additional errors about PCIe devices.

Potential Solutions

To address these issues, try the following solutions: * **Update BIOS/UEFI firmware:** The firmware bug that causes the ACPI region mismatch may be resolved in a BIOS/UEFI update. Check your motherboard manufacturer's website for updates. * **Disable TPM:** If the TPM probe is failing, you can try disabling the TPM in your BIOS/UEFI settings. This may allow the system to boot normally, but it will disable the TPM's security features. * **Use a different boot mode:** If the system fails to boot in default mode, try booting in legacy mode or safe mode. This may help identify the source of the boot problems. * **Reseat PCI devices:** If you encounter PCIe port errors, try reseating the PCI devices in their slots. This may fix any loose connections or other issues.

Conclusion

TPM probe failures, ACPI region mismatches, and PCIe port errors can all cause boot problems in Ubuntu 2204. By following the troubleshooting steps outlined in this article, you can potentially resolve these issues and restore normal system operation. If the problems persist, it is recommended to seek assistance from a qualified technician or contact your motherboard manufacturer for further support.