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Published 20 hours ago • verified publisher icon jakeday

Ubuntu 19.10, kernel 5.1.15 secure boot fails

Open ishalyminov opened this issue 5 years ago • 7 comments

Hi,

I've just upgraded my Surface Pro 6 to Ubuntu 19.10 (probably still beta). After upgrade, I did all the usual steps - re-installed linux-surface with downloading the latest kernel, and signed it manually, it has always worked for me before. This time though, upon reboot I can't select any option in grub (including Windows) as it shows several identical lines "Unknown TPM error" and then something like "You need to load kernel first". The only way I got my system to boot was exit grub into UEFI and disable TPM from there.

ishalyminov avatar Oct 13 '19 06:10 ishalyminov

I got the exact same error after upgrading from Ubuntu 19.04 to Ubuntu 19.10 on my HP EliteBook 820 G4. Disabling TPM in UEFI "solved" it for me as well. Seems to be a bug in grub2 package version 2.04 in Ubuntu 19.10. Seems they added UEFI TPM 1.2/2.0 support to grub2 version 2.04 in July 2019, but it obviously does not work for us..... https://www.phoronix.com/scan.php?page=news_item&px=GRUB-2.04-Released

MarkRijckenberg avatar Oct 19 '19 09:10 MarkRijckenberg

I also faced the same issue with upgrade to Ubuntu 19.10 on Asus laptop and disabling the secure boot option worked for me as well.

ravikg avatar Oct 21 '19 08:10 ravikg

I had the same issue. After days researching, i found that is a bug from Ubuntu 19.10. Go to your system machine, disable security boot and that's it

rodrigoddc avatar Oct 27 '19 09:10 rodrigoddc

for assus disable secure boot

mortifia avatar Oct 30 '19 16:10 mortifia

Thanks everyone! Although disabling TPM seems to be unbricking the device, it doesn't feel like a legit solution, especially for Surface. I remember I kept getting bitlocked every single time I would boot Windows, with Ubuntu 19.10 in multi-boot.

Is there any new version of grub which one can install and really fix this?

ishalyminov avatar Oct 30 '19 17:10 ishalyminov

I am using asus and i have encountered with same issue, my secure boot option already disabled and i have still same problem :(

ahmettortumlu avatar Nov 19 '19 07:11 ahmettortumlu

i finally handled following this comments instructions.

I think this solution exactly what you need.

https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1848892/comments/10

ahmettortumlu avatar Nov 19 '19 08:11 ahmettortumlu