After upgrading from 18.04 to 21.04, my XPS 13 fails to boot, giving the message "a TPM error (2314) occurred attempting the self test".
How can this be fixed? Thanks, jason -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762672 Title: TPM intermittently fails after cold-boot Status in linux package in Ubuntu: Fix Released Status in linux source package in Bionic: Fix Released Bug description: [Impact] On an 18.04 LTS system with a TPM, the TPM will fail intermittently on cold boots. The problem seems to be that the TPM gets into a state where the partial self-test doesn't return TPM_RC_SUCCESS (meaning all tests have run to completion), but instead returns TPM_RC_TESTING (meaning some tests are still running in the background). A reboot can sometimes restore TPM functionality. This bug was originally reported on a Dell XPS 13, but has also recently been reported on a Dell Edge Gateway 3000. The bug has been confirmed to be fixed in the current development release (19.04/Cosmic). [Test Case] Cold boot a Dell XPS 13 or Dell Edge Gateway 3000 running 18.04 LTS Desktop or Server and grep for the following error log message: "tpm tpm0: A TPM error (2314) occurred continue selftest" Any attempts at using the TPM via tpm2-tss libraries or tpm2-tools should produce errors. As this bug is due to a race condition, ideally this test case would be run multiple times (20+ cold boots). Once the patch is installed the following error message may still be present in the syslog, however attempts to use the TPM should work: "tpm tpm0: A TPM error (2314) occurred attempting the self test" [Regression Potential] The chance of regression is low, as this patch was written by a well respected kernel developer with deep TPM experience. The patch is also being cherry-picked from the upstream stable and LTS kernels, and as mentioned, has already landed in Disco. [Original Description] After updating a Dell XPS 13 to 18.04 LTS, the TPM started to intermittently fail on cold boot. The following log messages could be observed in syslog: [ 0.801334] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4) [ 0.812132] tpm tpm0: A TPM error (2314) occurred continue selftest [ 0.843629] tpm tpm0: A TPM error (2314) occurred continue selftest [ 0.895424] tpm tpm0: A TPM error (2314) occurred continue selftest [ 0.987230] tpm tpm0: A TPM error (2314) occurred continue selftest [ 1.159026] tpm tpm0: A TPM error (2314) occurred continue selftest [ 1.490819] tpm tpm0: A TPM error (2314) occurred continue selftest [ 2.142530] tpm tpm0: A TPM error (2314) occurred continue selftest [ 3.423100] tpm tpm0: TPM self test failed [ 3.456304] ima: No TPM chip found, activating TPM-bypass! (rc=-19) Discussion https://lkml.org/lkml/2017/12/6/284 Fix https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/char/tpm/tpm2-cmd.c?id=2be8ffed093b91536d52b5cd2c99b52f605c9ba6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762672/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
