I would also like to keep SecureBoot enabled at all times, if possible.I am trying to install Mint as a Dual Boot with windows 11. I have upgraded the BIOS firmware to the latest and did a reset settings, but still have the same problem. Is there any way to revert back to a default key, so that I can use my old installation disks without having the security issue? Is there somewhere in the Dell BIOS settings that can fix this problem? Microsoft) deprecate keys on the same organized day
Only Ubuntu is on-topic here, and 22.04 media now is available with 22.04.2 media (if what I'm saying is correct you'll get errors now with 22.04 or 22.04.1 media too) FYI: All OS companies (inc.
It's possible that your machine was updated by installation of 22.04.2 and you'll need to use updated ISOs if using Secure-uEFI if the other ISOs are using now deprecated keys. The release of Ubuntu 22.04.2 LTS was delayed a week to ensure it included the latest shim 15.7 which recently replaced the older and now deprecated keys. Here is some extra information quoted from another forum: If you got the update and then try to boot an OS that is still using the older files, it won't work and you get a Security Violation error. In plain terms, they made it so that newer boot files they release are bootable, and older ones aren't. What happened here is that Canonical updated their UEFI Secure Boot signing key and your system's Secure Boot Advanced Targeting variable.
Upon researching most of the evening, I found the following information (quoted from another site): It seems that the installation changed something in my BIOS, which makes the PC only accept security keys on newer operating system installs. I believe the issue started after I installed the latest version of Kubuntu (22.04.2), which was released only last month. Also Windows 10 install disk works fine too. When I attempt the installation, it comes up with a blue screen with the text: Verification failed: (0x1A) Security Violation The strange thing is, I have used the same ISO images (verified SHA256) on this PC previously and it worked fine with no issues. I am having a problem installing some Linux Distros (Linux Mint 21.1 & CloneZilla 2.8.0-27) on my Dell OptiPlex 7060 SFF PC (i7-8700) from either DVD or USB ISOs.
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