"Raspberry Pi OS 6.6" probably means it is using the linux kernel 6.6. My Pi 5 Bookworm has:
Code:
uname -aLinux pibk-128 6.6.20+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.6.20-1+rpt1 (2024-03-07) aarch64 GNU/LinuxStatistics: Posted by neilgl — Thu Mar 21, 2024 5:05 pm