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October 27th, 2022 15:00

Enabling TPM on OptiPlex

Hello,

I need some help with enabling TPM on OptiPlex 5050 systems running Ubuntu. I have enabled TPM from the BIOS, but when I check from the terminal it shows no TPM chip found.

PC1:~$ dmesg | grep -i TPM
[ 0.000000] ACPI: TPM2 0x00000000DAE694A8 000034 (v03 DELL CBX3 00000001 AMI 00000000)
[ 0.000000] ACPI: Reserving TPM2 table memory at [mem 0xdae694a8-0xdae694db]
[ 1.354556] tpm_tis: probe of MSFT0101:00 failed with error -1
[ 1.386756] ima: No TPM chip found, activating TPM-bypass! (rc=-19)

 

Some of our internal applications requires TPM2.0, and we are testing it; but we seem to face issues with this particular model.

Would be grateful if anyone has any ideas to resolve this.

 

Thanks!

1 person also has this problem

2bluesc

2 Posts

February 24th, 2023 19:00

Was able to resolve this by disabled Trusted Execution/TXT and clear the TPM in the BIOS.

2bluesc

2 Posts

February 24th, 2023 19:00

Ever figure anything out?  I'm seeing the same problem on Precision 5520:

Dell Inc. Precision 5520/0R6JFH, BIOS 1.31.0 11/10/2022

 Running Arch Linux with kernel 6.1.12-arch1-1

Have the tpm working fine on the same kernel on i5-12500 and an non Dell motherboard.

Kernel logs

Feb 24 21:03:56 host kernel: efi: ACPI=0x7835d000 ACPI 2.0=0x7835d000 SMBIOS=0xf0000 SMBIOS 3.0=0xf0020 TPMFinalLog=0x78a17000 MEMATTR=0x757e0298 INITRD=0x63e2a418 TPMEventLog=0x63e23018
Feb 24 21:03:56 host kernel: ACPI: TPM2 0x0000000078391848 000034 (v03        Tpm2Tabl 00000001 AMI  00000000)
Feb 24 21:03:56 host kernel: ACPI: Reserving TPM2 table memory at [mem 0x78391848-0x7839187b]
Feb 24 21:03:56 host kernel: tpm_tis: probe of MSFT0101:00 failed with error -1
Feb 24 21:03:56 host kernel: tpm_tis: probe of tpm_tis failed with error -1

 

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