Hi folks! See also the thread between AV and Frantisek ("changes to nouveau driver in kernel 6.8.2 and higher?")
Can anyone else who has a similar NVIDIA GPU please try booting the Workstation live image - https://dl.fedoraproject.org/pub/alt/stage/40_RC-1.13/Workstation/x86_64/iso... - and see if it works for you? Please post results here or in the bug report. Thanks!