

Press Reset Setup Mode or Reset to Setup Mode - depends on your bios.Advanced Options: UEFI Firmware Settings.Enter in BIOS (press F10, F2, F8, del or the one for your machine).The steps will depends on your model but in general they will be: The first solution is to disable the Secure Boot of your laptop or PC. Step 3: Fix Linux Mint Integrity problem by "Disable the Secure Boot" If you get errors try to backup your information and go for a new disk. Note: that this process might take time for bigger disks!Īnd finally try to repair the disk by: sudo fsck /dev/sda1 If there are no bad block you will see: sudo badblocks -sv /dev/sdaĬhecking for bad blocks (read-only test): done Then check the disk for badblocks: sudo badblocks -sv /dev/sda Identify the /dev/sdXX device name for your "Linux Mint" installation. To verify that your disk works properly you can use next commands: sudo fdisk -lĪfter entering your root pass you will see something like:ĭevice Boot Start End Sectors Size Id Type This can happen for new or existing installations. Step 2: Check the HDD or SSD for errorsĪnother reason for error - integrity: Problem loading X.509 certificate -65 might be a bad disk. Which was failing the login after few weeks usage. In case of errors you need to get new USB or retry the ISO writing.Check Media Integrity selection from the boot menu.Note: Even if the validation is successful you can check the USB disk integrity. In case of corrupted copy or not properly downloaded errors like the one above might occur. The steps to verify your ISO can be found on the link. If the error is shown for new installation then the ISO might be verified for correction. If you are able to login and use your Linux Mint installation and there's no issues with speed or crashes then you can simply ignore the error. The same error might appear on fresh installations or working stations. In this article we will cover several different reasons and possible solutions. integrity: Problem loading X.509 certificate -65 Or Initramfs unpacking failed: Decoding failed Or integrity: Problem loading X.509 certificate -65 Some versions of this error: Problem loading UEFI: db X.509 certificate (-65) The error might occur for dual boot systems. It might prevent you from login and using your Linux Mint installation.

The error: integrity: Problem loading X.509 certificate -65 usually appears during booting in Linux Mint 19 and 20.
