I don’t know what i915: unknown parameter 'i915' ignored means. In none of the configuration files present in /etc/modprobe.d/ are there any parameters for the i915 module.
cmdline is build from /etc/default/grub (the line with GRUB_CMDLINE_LINUX) during kernel install and grub2-mkconfig .
please show us your output of the above cat command !
i915 is the driver for your intel graphic card btw.
To my GRUB_CMDLINE_LINUX I have manual added i915.enable_guc=3 which loads firmware (GuC and HuC) [1] and that taints the kernel
The i915 options added for me work well. I had the same in Arch Linux (my previous OS).
I think that warning could be a bug but I can’t find the parameter that triggers that warning.
Thanks for the answers but as I said the error occurs from the installation (the day before) without me having added any parameter to the module i915.
Since it’s a warning, I think it’s best not to give it more importance.