Comment 5 for bug 1762672
Revision history for this message
| Tony Espy (awe) wrote Re: TPM on Dell XPS 13 stopped working after upgrade to 18.04 | #5 |
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67d34a1
(Get the code!)
@Tyler I've tested your kernel on a Dell Edge Gateway 3000 which was showing the same TPM selftest log messages as originally described in this bug. When cold-booted with your kernel I only see the following messages now:
14:57:44 [0.000000] ACPI: TPM2 0x0000000076D537C8 000034 (v03 Tpm2Tabl 00000001 AMI 00000000)
14:57:44 [2.703384] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4)
14:57:44 [2.714914] tpm tpm0: A TPM error (2314) occurred attempting the self test
I was able to verify that the TPM is operational by running the following tpm2-tools commands:
$ sudo tpm2_startup -T device --clear
$ tpm2_nvlist
(produces valid output)
Note - in this case, the system is using the in-kernel resource manager, which it appears doesn't initialize the TPM, hence the need for using tpm2_startup to initialize the TPM. The version of tpm2-tools used is 2.1.0.