Jan 10 20:09:20 lap14 kernel: [ 1.610566] nouveau [ PGRAPH][0000:01:00.0] using external firmware
Jan 10 20:09:20 lap14 kernel: [ 1.611187] nouveau E[ PGRAPH][0000:01:00.0] failed to load fuc409c
Jan 10 20:09:20 lap14 kernel: [ 1.611190] nouveau E[ DEVICE][0000:01:00.0] failed to create 0x1800d915, -22
Jan 10 20:09:20 lap14 kernel: [ 1.611193] nouveau E[ DRM] failed to create 0x80000080, -22
You must have named the fuc files wrong or they were not in the initrd, if nouveau fails to load the firmware like this it simply bails out and the driver won't finish loading, hence the blank screen.
Jan 10 20:09:20 lap14 kernel: [ 1.610566] nouveau [ PGRAPH] [0000:01: 00.0] using external firmware [0000:01: 00.0] failed to load fuc409c [0000:01: 00.0] failed to create 0x1800d915, -22
Jan 10 20:09:20 lap14 kernel: [ 1.611187] nouveau E[ PGRAPH]
Jan 10 20:09:20 lap14 kernel: [ 1.611190] nouveau E[ DEVICE]
Jan 10 20:09:20 lap14 kernel: [ 1.611193] nouveau E[ DRM] failed to create 0x80000080, -22
You must have named the fuc files wrong or they were not in the initrd, if nouveau fails to load the firmware like this it simply bails out and the driver won't finish loading, hence the blank screen.