Sony Vaio FZ Series - LCD brightness

Hi All,
I have recently bought a Sony VAIO FZ11S and I've successfully installed Archlinux:
Fully working:
- CPU Scaling (using cpudyn)
- Multimedia keys (mute, volume up/down, play/stop, etc. using Xmodmap)
- Wireless (using iwl3945. Can't connect with AP with hidden SSID)
- Nvidia GeForce 8400M (using latest nvidia drivers with stock arch kernel 2.6.23)
- Audio (after adding 'options snd-hda-intel model=vaio' to /etc/modprobe.conf. MIC not tested yet)
- bluetooth
- SD/MS card reader
- Video camera
- LCD brightness adjustment: FN+F5/F6 are detected correctly by acpid but nothing happens. I'm using the module sony-laptop included with kernel 2.6. Folder /sys/class/backlight is empty. I can use nvidia-settings to change COLOR BRIGHTNESS but this is NOT a good solution IMHO. I'd like to get the same capabilities I get running Windows Vista. (change LCD backlight).
I've read somewhere it is a problem common to all laptop with the same NVIDIA videocard. Does anyone know a fix for this? I've also tried with  latest nvidia beta drivers with no success.
- Hibernate/suspend. I tried with pm-tools to suspend/hibernate laptop but nothing is working correctly. I didn't investigate further. Has anyone got a quick solution for this?
lspci output:
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 0c)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Contoller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation GeForce 8400M GT (rev a1)
06:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
08:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8036 PCI-E Fast Ethernet Controller (rev 16)
09:03.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
09:03.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller
09:03.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
Please help
Last edited by Vins (2007-12-09 11:37:08)

I recently bought a Sony FZ180, almost identical stats and hardware.
I tried all the same suggestions, which worked fine on my old laptop, but will not for this one. If anyone can think of another method to control the backlight I would be grateful.
Also, I tested the SD slot, the TI driver recognizes when a card is inserted, but no devices or mount-points are created.
tifm_core: MMC/SD card detected in socket 0:1
tifm0 : demand removing card from socket 0:1
(The second line is from me removing the card, not a defective slot.)
Everything else works great, though. Arch boots to a full KDE desktop much, much faster than my cleaned-up vista partition. I'm really happy overall.

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