Was wondering about this error as well, looks like it's a benign warning and can be ignored: https://unix.stackexchange.com/questions/618869/debian-bullseye-firmware-for-i915
> rkl is apparently Rocket Lake, the codename for an Intel chipset that is > supposed to be released in early 2021. > <https://en.wikipedia.org/wiki/Rocket_Lake> So this is the Linux i915 > driver already getting support for hardware that is not released yet. > > The i915 driver covers a wide range of Intel iGPUs, including all the > current ones and sometimes even near-future ones if they follow a design > similar to their predecessors. > > The kernel modules like i915 include metadata indicating the firmware > files they *may* need: the i915 module needs to declare the firmware > files for all supported Intel iGPU versions this way. > > The update-initramfs tool is not smart enough to cross-check the hardware > information to find out which of the various firmware files declared by the > i915 driver are *actually needed* by your hardware, so it will simply > attempt to include all of them into initramfs. > > Unless you have installed firmware files for *all* the Intel iGPU > variants, you may get some nuisance messages from update-initramfs; but > if they don't refer to the iGPU/chipset version you're actually using, you > can simply ignore them. >
