Thanks to @Adam Conrad (adconrad) for the updated packages in eoan-proposed :
My laptop can now successfully boot with Secure boot enabled.
$ uname -a
Linux urbah-15 5.3.0-21-generic #22-Ubuntu SMP Tue Oct 29 22:55:51 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux
$ dmesg | grep -i -e secure -e tpm
[ 0.000000] efi: TPMFinalLog=0x7ccdc000 ACPI 2.0=0x7c4c3000
ACPI=0x7c4c3000 SMBIOS=0x7d2f0000 SMBIOS 3.0=0x7d2ef000 MPS=0xfca00
ESRT=0x7a59d3d8
[ 0.000000] secureboot: Secure boot could not be determined (mode 0)
[ 0.010088] ACPI: TPM2 0x000000007C4F95A0 000034 (v03 Tpm2Tabl
00000001 AMI 00000000)
[ 0.622872] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover
the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs
fed40080 f80
[ 0.622877] tpm_crb MSFT0101:00: [Firmware Bug]: ACPI region does not cover
the entire command/response buffer. [mem 0xfed40000-0xfed4087f flags 0x200] vs
fed40080 f80
$ apt-cache policy grub2-common grub-efi-amd64-signed
grub2-common:
Installed: 2.04-1ubuntu12.1
Candidate: 2.04-1ubuntu12.1
Version table:
*** 2.04-1ubuntu12.1 500
500 http://fr.archive.ubuntu.com/ubuntu eoan-proposed/main amd64
Packages
100 /var/lib/dpkg/status
2.04-1ubuntu12 500
500 http://fr.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
grub-efi-amd64-signed:
Installed: 1.128.1+2.04-1ubuntu12.1
Candidate: 1.128.1+2.04-1ubuntu12.1
Version table:
*** 1.128.1+2.04-1ubuntu12.1 500
500 http://fr.archive.ubuntu.com/ubuntu eoan-proposed/main amd64
Packages
100 /var/lib/dpkg/status
1.128+2.04-1ubuntu12 500
500 http://fr.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
** Tags removed: verification-needed-eoan
** Tags added: verification-done-eoan
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https://bugs.launchpad.net/bugs/1848892
Title:
"error: Unknown TPM error." after upgrading to grub 2.04
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