TraceyC
I had already read the exact link before you posted it. So I know what efivars is and how it is created. But I haven't yet found a way to remove unnecessary entries, especially as I don't even know which ones I'm allowed to remove.
Because the error has been occurring for several weeks, I have already carried out many reboots.
Maybe the approach in CoreBoot is different than in the classic BIOS?
Axios
No need to say sorry - it's all fine ;-)
As I said my System is not broken. It's fluid as hell. Updates are completed as quickly as possible, I never had a single error.
It doesn't really bother me that the error is reported now, because the firmware seems to have been installed anyway. I'm just surprised that the system doesn't recognize the update.
Perhaps it's important to mention that I've been using the OS for three or four previous laptops by simply installing the hard disk in the newer machine. Could that be why there are old entries somewhere that are now interfering?