Yes, any information from hal-device can be the solution for detect the
products affects. This is mine:

$ hal-find-by-property --key info.linux.driver --string 'nvidia'
/org/freedesktop/Hal/devices/pci_10de_426
sh...@vaio:~$ hal-device /org/freedesktop/Hal/devices/pci_10de_426
udi = '/org/freedesktop/Hal/devices/pci_10de_426'
  pci.device_protocol = 0  (0x0)  (int)
  info.linux.driver = 'nvidia'  (string)
  pci.vendor = 'nVidia Corporation'  (string)
  linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0'  
(string)
  info.vendor = 'nVidia Corporation'  (string)
  info.subsystem = 'pci'  (string)
  info.parent = '/org/freedesktop/Hal/devices/pci_8086_2a01'  (string)
  pci.product = 'G86M [GeForce 8400M GT]'  (string)
  info.product = 'G86M [GeForce 8400M GT]'  (string)
  pci.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0'  
(string)
  pci.subsys_vendor = 'Sony Corporation'  (string)
  info.udi = '/org/freedesktop/Hal/devices/pci_10de_426'  (string)
  pci.product_id = 1062  (0x426)  (int)
  linux.hotplug_type = 2  (0x2)  (int)
  pci.vendor_id = 4318  (0x10de)  (int)
  linux.subsystem = 'pci'  (string)
  pci.subsys_product_id = 36869  (0x9005)  (int)
  pci.subsys_vendor_id = 4173  (0x104d)  (int)
  pci.device_class = 3  (0x3)  (int)
  pci.device_subclass = 0  (0x0)  (int)

Yes, maybe is posible collecting this information, I don't know how hal
works, for this reason I only propose ideas.

I say to you if nvidia8, nvidia9 and quadro are different, because I
don't know if nvidia8 works for the three. If you say that yes, no
problem.

-- 
No Screen Backlight Control; Notebooks (Vaio, Macbook, HP/Compaq, Samsung, 
Zepto et al.)  with Nvidia Geforce8/Geforce9/Quadro series graphics
https://bugs.launchpad.net/bugs/95444
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