** Description changed:

- My laptop in sony Vaio E series VCPCEH18FA 
- Ubuntu 11.04
+ My laptop in sony Vaio E series VCPCEH18FA
+ Ubuntu 11.10
  In the screen settings I have unknown screen , have the brightness slider 
move up and down but no brightness change ..
- the function keys also work but no change in the display brightness 
+ the function keys also work but no change in the display brightness
  Video Card Nvidia geforce 410M
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-12-generic 3.0.0-12.20
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  ArecordDevices:
-  **** List of CAPTURE Hardware Devices ****
-  card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
+  **** List of CAPTURE Hardware Devices ****
+  card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  islam      1593 F.... pulseaudio
-  /dev/snd/controlC0:  islam      1593 F.... pulseaudio
-  /dev/snd/pcmC0D0p:   islam      1593 F...m pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  islam      1593 F.... pulseaudio
+  /dev/snd/controlC0:  islam      1593 F.... pulseaudio
+  /dev/snd/pcmC0D0p:   islam      1593 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
-  Card hw:0 'PCH'/'HDA Intel PCH at 0xd5300000 irq 43'
-    Mixer name : 'Conexant CX20590'
-    Components : 'HDA:14f1506e,104d5a00,00100000'
-    Controls      : 16
-    Simple ctrls  : 10
+  Card hw:0 'PCH'/'HDA Intel PCH at 0xd5300000 irq 43'
+    Mixer name : 'Conexant CX20590'
+    Components : 'HDA:14f1506e,104d5a00,00100000'
+    Controls      : 16
+    Simple ctrls  : 10
  Card1.Amixer.info:
-  Card hw:1 'NVidia'/'HDA NVidia at 0xd3000000 irq 17'
-    Mixer name : 'Nvidia GPU 1c HDMI/DP'
-    Components : 'HDA:10de001c,104d5a00,00100100'
-    Controls      : 4
-    Simple ctrls  : 1
+  Card hw:1 'NVidia'/'HDA NVidia at 0xd3000000 irq 17'
+    Mixer name : 'Nvidia GPU 1c HDMI/DP'
+    Components : 'HDA:10de001c,104d5a00,00100100'
+    Controls      : 4
+    Simple ctrls  : 1
  Card1.Amixer.values:
-  Simple mixer control 'IEC958',0
-    Capabilities: pswitch pswitch-joined penum
-    Playback channels: Mono
-    Mono: Playback [on]
+  Simple mixer control 'IEC958',0
+    Capabilities: pswitch pswitch-joined penum
+    Playback channels: Mono
+    Mono: Playback [on]
  Date: Wed Nov  2 22:22:08 2011
  HibernationDevice: RESUME=UUID=ad62ca06-e1c5-4dd6-a814-9f427851dd35
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  MachineType: Sony Corporation VPCEH18FA
  ProcEnviron:
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic 
root=UUID=66ba2363-6421-49f5-a6d1-7769a79ece4b ro quiet splash vt.handoff=7
  PulseSinks: Error: command ['pacmd', 'list-sinks'] failed with exit code 1: 
No PulseAudio daemon running, or not running as session daemon.
  PulseSources: Error: command ['pacmd', 'list-sources'] failed with exit code 
1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
-  linux-restricted-modules-3.0.0-12-generic N/A
-  linux-backports-modules-3.0.0-12-generic  N/A
-  linux-firmware                            1.60
+  linux-restricted-modules-3.0.0-12-generic N/A
+  linux-backports-modules-3.0.0-12-generic  N/A
+  linux-firmware                            1.60
  SourcePackage: linux
  StagingDrivers: rts_pstor mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:
-  
+ 
  dmi.bios.date: 04/28/2011
  dmi.bios.vendor: INSYDE
  dmi.bios.version: R0180Z9
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnINSYDE:bvrR0180Z9:bd04/28/2011:svnSonyCorporation:pnVPCEH18FA:pvrC105HX0N:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: VPCEH18FA
  dmi.product.version: C105HX0N
  dmi.sys.vendor: Sony Corporation

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https://bugs.launchpad.net/bugs/885417

Title:
  can't change brighness (unknown display in display settings)

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