sid (unstable): 5.2.7-1
buster (testing): 4.19.37-5+deb10u2
stretch (stable): 4.9.168-1+deb9u5
jessie (oldstable): 3.16.72-1

Debian GNU/Linux device driver check & report

Apple: macbook 6,1 MC207T/A

PCI IDWorks?VendorDeviceDriverKernel
10de0a82nVidia CorporationMCP79 Host Bridge
10de0a88nVidia CorporationMCP79 Memory Controller
10de0aaenVidia CorporationMCP79 LPC Bridge
10de0aa4nVidia CorporationMCP79 Memory Controller
10de0aa2YesnVidia CorporationMCP79 SMBusi2c-nforce2v2.6.30-
10de0a89nVidia CorporationMCP79 Memory Controller
10de0aa3nVidia CorporationMCP79 Co-processor
10de0aa5nVidia CorporationMCP79 OHCI USB 1.1 Controller
10de0aa6nVidia CorporationMCP79 EHCI USB 2.0 Controller
10de0aa7nVidia CorporationMCP79 OHCI USB 1.1 Controller
10de0aa9nVidia CorporationMCP79 EHCI USB 2.0 Controller
10de0ac0YesnVidia CorporationMCP79 High Definition Audiosnd-hda-intel
10de0aabnVidia CorporationMCP79 PCI Bridge
10de0ab0YesnVidia CorporationMCP79 Ethernetforcedethv2.6.24-
10de0ab5YesnVidia CorporationMCP79 SATA Controllerahciv2.6.24-
10de0aa0nVidia CorporationMCP79 PCI Express Bridge
10de0ac6nVidia CorporationMCP79 PCI Express Bridge
10de0863nVidia CorporationC79 [GeForce 9400M]
14e44353YesBroadcom CorporationBCM43224 802.11a/b/g/nbrcm80211v2.6.38-

LCD brightness is adjustable also using hotkeys in squeeze.
For this featurest, one have to install pommed (from debian repos) and nvidia-bl-dkms module  (from the ubuntu mactel project). I used this: (2010-03-09 06:28:08)