** Description changed:

  Binary package hint: acpi-support
  
  After an upgrade to Ubuntu 10.10 the previously natively-supported Fn
  key control of backlight brightness is gone.  I can control backlight
- with xbacklight, as before.  This seems to be a regression, related to
- bug #173652.
+ with xbacklight, as before.
+ 
+ Git bisect locates the bug to commit bcbfc24ead6935714a001ab6f1f725763075f98c
+ in Maverick's kernel branch
+ http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-maverick.git;a=summary
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: acpi-support 0.137
  ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic x86_64
  Architecture: amd64
  Date: Mon Oct 11 11:21:39 2010
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100412)
  ProcEnviron:
-  LANG=en_GB.utf8
-  SHELL=/bin/bash
+  LANG=en_GB.utf8
+  SHELL=/bin/bash
  SourcePackage: acpi-support
- --- 
+ ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  AplayDevices:
-  **** List of PLAYBACK Hardware Devices ****
-  card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
+  **** List of PLAYBACK Hardware Devices ****
+  card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
  Architecture: amd64
  ArecordDevices:
-  **** List of CAPTURE Hardware Devices ****
-  card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
+  **** List of CAPTURE Hardware Devices ****
+  card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  mdoube     1739 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  mdoube     1739 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
-  Card hw:0 'Intel'/'HDA Intel at 0xfc500000 irq 48'
-    Mixer name : 'SigmaTel STAC9872AK'
-    Components : 'HDA:83847662,104d1e00,00100201 
HDA:14f12c06,104d1700,00100000'
-    Controls      : 11
-    Simple ctrls  : 7
+  Card hw:0 'Intel'/'HDA Intel at 0xfc500000 irq 48'
+    Mixer name : 'SigmaTel STAC9872AK'
+    Components : 'HDA:83847662,104d1e00,00100201 
HDA:14f12c06,104d1700,00100000'
+    Controls      : 11
+    Simple ctrls  : 7
  DistroRelease: Ubuntu 10.10
  HibernationDevice: RESUME=UUID=a017c7e4-4a29-4ba1-bfea-52cd609781d8
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100412)
  MachineType: Sony Corporation VGN-SZ650N
  Package: linux (not installed)
  PccardctlIdent:
-  Socket 0:
-    no product info available
+  Socket 0:
+    no product info available
  PccardctlStatus:
-  Socket 0:
-    no card
+  Socket 0:
+    no card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic 
root=UUID=31cf7381-5708-4104-8d9e-a2eaaec7cbe7 ro quiet splash
  ProcEnviron:
-  PATH=(custom, no user)
-  LANG=en_GB.utf8
-  SHELL=/bin/bash
+  PATH=(custom, no user)
+  LANG=en_GB.utf8
+  SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
  Regression: Yes
  RelatedPackageVersions: linux-firmware 1.38
  Reproducible: Yes
  RfKill:
-  0: phy0: Wireless LAN
-       Soft blocked: no
-       Hard blocked: no
+  0: phy0: Wireless LAN
+   Soft blocked: no
+   Hard blocked: no
  Tags: maverick kernel-graphics regression-release needs-upstream-testing
  Uname: Linux 2.6.35-22-generic x86_64
  UserGroups:
-  
+ 
  dmi.bios.date: 04/04/2008
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: R0122S5
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnPhoenixTechnologiesLTD:bvrR0122S5:bd04/04/2008:svnSonyCorporation:pnVGN-SZ650N:pvrJ002UR2M:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: VGN-SZ650N
  dmi.product.version: J002UR2M
  dmi.sys.vendor: Sony Corporation
  
- --- 
+ ---
  Architecture: amd64
  DistroRelease: Ubuntu 10.10
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100412)
  Package: linux (not installed)
  ProcEnviron:
-  PATH=(custom, no user)
-  LANG=en_GB.utf8
-  SHELL=/bin/bash
+  PATH=(custom, no user)
+  LANG=en_GB.utf8
+  SHELL=/bin/bash
  Tags: maverick
  Uname: Linux 2.6.36-rc7-linusgit-1.0+ x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UserGroups:

-- 
Fn key control of backlight broken after upgrade to 10.10
https://bugs.launchpad.net/bugs/658198
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