Comment 9 for bug 1263498

Hello, now it is possible for me to control the brightness via "System Settings" -> Brightness and lock" -> "Brightness" slider!

But the fn button still not work (except once a time with the kernel parameter "acpi_osi=" until to the next reboot).

Since Autum it works over die Brightness slider, but i don't no why... maybe due to the newer nvidia driver (331.38 -> 331.113)...

 % uname -a

Linux G75VX 3.13.0-40-generic #69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

% sudo lspci -v| sed -ne '/NVIDIA/,/^$/ { p; }'

01:00.0 VGA compatible controller: NVIDIA Corporation GK104M [GeForce GTX 670MX] (rev a1) (prog-if 00 [VGA controller])
 Subsystem: ASUSTeK Computer Inc. Device 21ab
 Flags: bus master, fast devsel, latency 0, IRQ 46
 Memory at f4000000 (32-bit, non-prefetchable) [size=16M]
 Memory at c0000000 (64-bit, prefetchable) [size=256M]
 Memory at d0000000 (64-bit, prefetchable) [size=32M]
 I/O ports at e000 [size=128]
 [virtual] Expansion ROM at f5000000 [disabled] [size=512K]
 Capabilities: [60] Power Management version 3
 Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
 Capabilities: [78] Express Endpoint, MSI 00
 Capabilities: [b4] Vendor Specific Information: Len=14 <?>
 Capabilities: [100] Virtual Channel
 Capabilities: [128] Power Budgeting <?>
 Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
 Kernel driver in use: nvidia

01:00.1 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1)
 Subsystem: ASUSTeK Computer Inc. Device 2116
 Flags: bus master, fast devsel, latency 0, IRQ 17
 Memory at f5080000 (32-bit, non-prefetchable) [size=16K]
 Capabilities: [60] Power Management version 3
 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
 Capabilities: [78] Express Endpoint, MSI 00
 Kernel driver in use: snd_hda_intel

% lspci -v | perl -ne '/VGA/../^$/ and /VGA|Kern/ and print'

01:00.0 VGA compatible controller: NVIDIA Corporation GK104M [GeForce GTX 670MX] (rev a1) (prog-if 00 [VGA controller])
 Kernel driver in use: nvidia

% dpkg --status nvidia-331 | grep Version

Version: 331.113-0ubuntu0.0.4

% dpkg -l nvidia*

ii nvidia-331 331.113-0ubu amd64 NVIDIA binary driver - version 33
ii nvidia-331-uvm 331.113-0ubu amd64 NVIDIA Unified Memory kernel modu
un nvidia-common <keine> <keine> (keine Beschreibung vorhanden)
un nvidia-driver- <keine> <keine> (keine Beschreibung vorhanden)
ii nvidia-libopen 331.113-0ubu amd64 NVIDIA OpenCL Driver and ICD Load
ii nvidia-opencl- 331.113-0ubu amd64 NVIDIA OpenCL ICD
un nvidia-persist <keine> <keine> (keine Beschreibung vorhanden)
ii nvidia-prime 0.6.2 amd64 Tools to enable NVIDIA's Prime
ii nvidia-setting 331.20-0ubun amd64 Tool for configuring the NVIDIA g
un nvidia-setting <keine> <keine> (keine Beschreibung vorhanden)
un nvidia-vdpau-d <keine> <keine> (keine Beschreibung vorhanden)

Kind regards,

patrice