← Back to team overview

kernel-packages team mailing list archive

[Bug 772050] Re: 8086:2a42 [eMachines E725] My backlight is off

 

Lucas Clemente Vella, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in
the development release from a Terminal
(Applications->Accessories->Terminal), as it will automatically gather
and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc1

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** This bug is no longer a duplicate of bug 765438
   8086:2a42 [eMachines E527] On startup, the backlight is off on laptop

** Tags added: bios-outdated-3.10 needs-upstream-testing

** Description changed:

  I just updated to Ubuntu 11.04 Beta to find that the backlight of my
  monitor is off (or very low) and I can't turn it on.
  
  The backlight intensity control never worked on any previous version of
  Ubuntu (the Fn key controls responded, and changed a bar on screen, but
  never really changed the backlight). The Fn key On/Off worked before. In
  the new kernel, the backlight is off (or very low) by default and the
  controls does not work, so I can't turn it on.
  
- Now I am using the old 2.6.35-28-generic kernel to report this bug. I
- hope enough info on the system has been gathered. My laptop is an
- eMachines E725. lspci report the following about the video device:
+ Now I am using the old 2.6.35-28-generic kernel to report this bug.
  
- 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
- 	Subsystem: Acer Incorporated [ALI] Device 0212
- 	Flags: bus master, fast devsel, latency 0, IRQ 44
- 	Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
- 	Memory at c0000000 (64-bit, prefetchable) [size=256M]
- 	I/O ports at 50f0 [size=8]
- 	Expansion ROM at <unassigned> [disabled]
- 	Capabilities: <access denied>
- 	Kernel driver in use: i915
- 	Kernel modules: i915
+ BIOS update
+ http://support.gateway.com/us/en/emac/product/default.aspx?modelId=1258
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-8-generic 2.6.38-8.42
  ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
  Uname: Linux 2.6.35-28-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  AplayDevices:
-  **** List of PLAYBACK Hardware Devices ****
-  card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
-    Subdevices: 0/1
-    Subdevice #0: subdevice #0
+  **** List of PLAYBACK Hardware Devices ****
+  card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
+    Subdevices: 0/1
+    Subdevice #0: subdevice #0
  Architecture: i386
  ArecordDevices:
-  **** List of CAPTURE Hardware Devices ****
-  card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
+  **** List of CAPTURE Hardware Devices ****
+  card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
+    Subdevices: 1/1
+    Subdevice #0: subdevice #0
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  lucas      1822 F.... pulseaudio
-  /dev/snd/pcmC0D0p:   lucas      1822 F...m pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  lucas      1822 F.... pulseaudio
+  /dev/snd/pcmC0D0p:   lucas      1822 F...m pulseaudio
  Card0.Amixer.info:
-  Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 45'
-    Mixer name	: 'Realtek ALC272X'
-    Components	: 'HDA:10ec0272,10250212,00100001'
-    Controls      : 15
-    Simple ctrls  : 9
+  Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 45'
+    Mixer name	: 'Realtek ALC272X'
+    Components	: 'HDA:10ec0272,10250212,00100001'
+    Controls      : 15
+    Simple ctrls  : 9
  Date: Wed Apr 27 18:33:25 2011
  HibernationDevice: RESUME=UUID=3e3ff916-ea57-411c-81e3-43861b6b198d
  MachineType: eMachines eMachines E725
  ProcEnviron:
-  LANGUAGE=pt_BR:en
-  LANG=pt_BR.UTF-8
-  SHELL=/bin/bash
+  LANGUAGE=pt_BR:en
+  LANG=pt_BR.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: root=UUID=2cdcad63-4a14-4e12-9cd4-bf10a0d49acd ro locale=pt_BR quiet splash  crashkernel=384M-2G:64M,2G-:128M
  RelatedPackageVersions:
-  linux-restricted-modules-2.6.35-28-generic N/A
-  linux-backports-modules-2.6.35-28-generic  N/A
-  linux-firmware                             1.52
+  linux-restricted-modules-2.6.35-28-generic N/A
+  linux-backports-modules-2.6.35-28-generic  N/A
+  linux-firmware                             1.52
  RfKill:
-  0: phy0: Wireless LAN
-  	Soft blocked: no
-  	Hard blocked: no
+  0: phy0: Wireless LAN
+   Soft blocked: no
+   Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to natty on 2011-04-27 (0 days ago)
  WpaSupplicantLog:
-  
+ 
  dmi.bios.date: 03/11/2009
  dmi.bios.vendor: eMachines
  dmi.bios.version: V1.03
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: eMachines E725
  dmi.board.vendor: eMachines
  dmi.board.version: V1.03
  dmi.chassis.type: 1
  dmi.chassis.vendor: eMachines
  dmi.chassis.version: V1.03
  dmi.modalias: dmi:bvneMachines:bvrV1.03:bd03/11/2009:svneMachines:pneMachinesE725:pvrV1.03:rvneMachines:rneMachinesE725:rvrV1.03:cvneMachines:ct1:cvrV1.03:
  dmi.product.name: eMachines E725
  dmi.product.version: V1.03
  dmi.sys.vendor: eMachines

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

** Tags added: regression-release

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/772050

Title:
  8086:2a42 [eMachines E725] My backlight is off

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I just updated to Ubuntu 11.04 Beta to find that the backlight of my
  monitor is off (or very low) and I can't turn it on.

  The backlight intensity control never worked on any previous version
  of Ubuntu (the Fn key controls responded, and changed a bar on screen,
  but never really changed the backlight). The Fn key On/Off worked
  before. In the new kernel, the backlight is off (or very low) by
  default and the controls does not work, so I can't turn it on.

  Now I am using the old 2.6.35-28-generic kernel to report this bug.

  BIOS update
  http://support.gateway.com/us/en/emac/product/default.aspx?modelId=1258

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: linux-image-2.6.38-8-generic 2.6.38-8.42
  ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
  Uname: Linux 2.6.35-28-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
     Subdevices: 0/1
     Subdevice #0: subdevice #0
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  lucas      1822 F.... pulseaudio
   /dev/snd/pcmC0D0p:   lucas      1822 F...m pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 45'
     Mixer name	: 'Realtek ALC272X'
     Components	: 'HDA:10ec0272,10250212,00100001'
     Controls      : 15
     Simple ctrls  : 9
  Date: Wed Apr 27 18:33:25 2011
  HibernationDevice: RESUME=UUID=3e3ff916-ea57-411c-81e3-43861b6b198d
  MachineType: eMachines eMachines E725
  ProcEnviron:
   LANGUAGE=pt_BR:en
   LANG=pt_BR.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: root=UUID=2cdcad63-4a14-4e12-9cd4-bf10a0d49acd ro locale=pt_BR quiet splash  crashkernel=384M-2G:64M,2G-:128M
  RelatedPackageVersions:
   linux-restricted-modules-2.6.35-28-generic N/A
   linux-backports-modules-2.6.35-28-generic  N/A
   linux-firmware                             1.52
  RfKill:
   0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to natty on 2011-04-27 (0 days ago)
  WpaSupplicantLog:

  dmi.bios.date: 03/11/2009
  dmi.bios.vendor: eMachines
  dmi.bios.version: V1.03
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: eMachines E725
  dmi.board.vendor: eMachines
  dmi.board.version: V1.03
  dmi.chassis.type: 1
  dmi.chassis.vendor: eMachines
  dmi.chassis.version: V1.03
  dmi.modalias: dmi:bvneMachines:bvrV1.03:bd03/11/2009:svneMachines:pneMachinesE725:pvrV1.03:rvneMachines:rneMachinesE725:rvrV1.03:cvneMachines:ct1:cvrV1.03:
  dmi.product.name: eMachines E725
  dmi.product.version: V1.03
  dmi.sys.vendor: eMachines

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/772050/+subscriptions