I have followed this troubleshooting procedure: 1) Booted to Windows 10 to install newest tpm firmware for my HP EliteBook 820 G4 laptop using HP TPM Configuration Utility. 2) Booted to Ubuntu 19.10 (kernel 5.3.0-18-generic) with Secureboot enabled and TPM disabled 3) Purged and uninstalled all grub* packages (Yes, I know, pretty dangerous :-) 4) Only reinstalled following grub packages
~>apt list --installed|grep grub WARNING: apt does not have a stable CLI interface. Use with caution in scripts. grub-common/eoan,now 2.04-1ubuntu12 amd64 [installed,automatic] grub-customizer/eoan,now 5.1.0-1 amd64 [installed] grub-efi-amd64-bin/eoan,now 2.04-1ubuntu12 amd64 [installed,automatic] grub-efi-amd64-signed/eoan,now 1.128+2.04-1ubuntu12 amd64 [installed] grub-gfxpayload-lists/eoan,now 0.7 amd64 [installed,automatic] grub-pc-bin/eoan,now 2.04-1ubuntu12 amd64 [installed,automatic] grub-pc/eoan,now 2.04-1ubuntu12 amd64 [installed,automatic] grub2-common/eoan,now 2.04-1ubuntu12 amd64 [installed] grub2-splashimages/eoan,eoan,now 1.0.1+nmu1 all [installed] grub2-themes-ubuntu-mate/eoan,eoan,now 0.3.7 all [installed] grub2-themes-ubuntustudio/eoan,eoan,now 0.2 all [installed] grub2/eoan,now 2.04-1ubuntu12 amd64 [installed] 5) Ran sudo update-grub2 6) Updated Ubuntu kernel to signed kernel version 5.3.0-19-generic 7) In UEFI, disabled SecureBoot and enabled TPM 2.0. 8) Successfully rebooted into Ubuntu 19.10 with TPM 2.0 enabled and SecureBoot disabled ~>dmesg | grep -i tpm [ 0.000000] efi: ACPI=0xd9ffe000 ACPI 2.0=0xd9ffe014 TPMFinalLog=0xd9f76000 SMBIOS=0xd9765000 SMBIOS 3.0=0xd9763000 MEMATTR=0xd5f3c018 ESRT=0xd9766b18 [ 0.016058] ACPI: SSDT 0x00000000D9FEC000 0003B3 (v02 HPQOEM Tpm2Tabl 00001000 INTL 20160422) [ 0.016061] ACPI: TPM2 0x00000000D9FEB000 000034 (v03 HPQOEM EDK2 00000002 01000013) [ 4.129890] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0x1B, rev-id 16) ~> uname -a HP-EliteBook-820-G4 5.3.0-19-generic #20-Ubuntu SMP Fri Oct 18 09:04:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux $ ls -la /lib/modules/`uname -r`/kernel/drivers/char/tpm total 172 drwxr-xr-x 3 root root 4096 Okt 22 10:58 . drwxr-xr-x 9 root root 4096 Okt 22 10:58 .. drwxr-xr-x 2 root root 4096 Okt 22 10:58 st33zp24 -rw-r--r-- 1 root root 11737 Okt 18 10:17 tpm_atmel.ko -rw-r--r-- 1 root root 11697 Okt 18 10:17 tpm_i2c_atmel.ko -rw-r--r-- 1 root root 16473 Okt 18 10:17 tpm_i2c_infineon.ko -rw-r--r-- 1 root root 22721 Okt 18 10:17 tpm_i2c_nuvoton.ko -rw-r--r-- 1 root root 22177 Okt 18 10:17 tpm_infineon.ko -rw-r--r-- 1 root root 17017 Okt 18 10:17 tpm_nsc.ko -rw-r--r-- 1 root root 11617 Okt 18 10:17 tpm_tis_spi.ko -rw-r--r-- 1 root root 17361 Okt 18 10:17 tpm_vtpm_proxy.ko -rw-r--r-- 1 root root 14585 Okt 18 10:17 xen-tpmfront.ko $ ps -aux|grep tpm_dev root 140 0.0 0.0 0 0 ? I< 12:52 0:00 [tpm_dev_wq] $ ls -lart /sys/class/tpm/tpm0/ total 0 drwxr-xr-x 2 root root 0 Okt 22 13:22 ppi drwxr-xr-x 2 root root 0 Okt 22 13:22 power lrwxrwxrwx 1 root root 0 Okt 22 13:22 device -> ../../../MSFT0101:00 -r--r--r-- 1 root root 4096 Okt 22 13:22 dev -rw-r--r-- 1 root root 4096 Okt 22 2019 uevent lrwxrwxrwx 1 root root 0 Okt 22 2019 subsystem -> ../../../../../class/tpm drwxr-xr-x 3 root root 0 Okt 22 2019 .. drwxr-xr-x 4 root root 0 Okt 22 2019 . * The command sudo tpm2_nvlist gives lots of output However, I haven't succeeded in enabling Secureboot and TPM 2.0 at the same time.... On my laptop, I have to choose to either enable Secureboot or enable TPM 2.0, not both. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1848892 Title: "error: Unknown TPM error." after upgrading to grub 2.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1848892/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
