Hi all, I have added Takashi Iwai to the CC list as he previously resolved a similar issue (ref. Bug 1220030) related to the touchpad not being recognized on my MacBook Pro 5.1 with a different kernel version. His expertise and familiarity with the hardware might provide valuable insights into the current problem with the 6.4.0-150600.21.2-default kernel. Thank you, -Jacopo