I am having problem booting Ubuntu 20.04. Recently I upgrade to 20.04 from 18.04. After installation and a several successful reboot, I cannot boot 20.04 anymore. It is showing
integrity problem loading x.509 certificate (-65) ubuntu 20.04
I have already set the BOOT Mode: UEFI
and Secure Boot: Disabled
. Previously I had dual boot of Ubuntu along with Windows 10 and having this problem. To make sure that Windows 10 is not
causing problem, now I have removed it. So its only Ubuntu now in the system.
My system is :
- Acer Aspire A515-52G
- HDD: Toshiba 1 TB
- Have Intel Optane memory of 16 GB but 'Disabled' from BOOT menu.
Can anyone please help with any suggestions to get rid of this. Thanks in advance.