after suspend no screen backlight control on Nvidia GT425M

[Norbert]

Binary package hint: xserver-xorg-video-nouveau

I use nouveau driver on my laptop Sony VAIO F13Z1R with GT425M.
When it returns from suspend backlight control does not work.

I use nouveau driver because of more cofmortable baclight (no gradient or dim at low brightness levels). See comments on http://code.google.com/p/vaio-f11-linux/wiki/AutoDimmingBacklightDaemon for better understanding what I mean.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
CheckboxSubmission: a3c9de473bf7a483a92609c6b20d2aee
CheckboxSystem: b633b4f40868d491c2ae5b50030ce6f3
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: None
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1920x1080 1920x1080 1920x1080 1680x1050 1400x1050 1280x1024 1280x960 1152x864 1024x768 800x600 640x480 720x400 640x400 640x350
 edid-base64: AP///////wA2fyUAAAAAAC0MAQSQJBQA6qjgmVdLkiUcUFQAAAABAQEBAQEBAQEBAQEBAQEBQDiAtHA4QEA8PFUAaMgQAAAYQDiAgHE4qkCAgIgAaMgQAAAYAAAA/ABOdmlkaWEgRGVmYXVsAAAA/AB0IEZsYXQgUGFuZWwAAB8=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Sat May 21 20:53:01 2011
DistUpgraded: Log time: 2011-05-01 23:43:09.236922
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.0.8, 2.6.38-8-generic, x86_64: installed
GraphicsCard:
 nVidia Corporation Device [10de:0df0] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Sony Corporation Device [104d:907a]
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: Sony Corporation VPCF13Z1R
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-8-generic root=UUID=3306dd80-2101-4251-b811-9691fdf7d487 ro i8042.nopnp acpi_backlight=video quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xserver-xorg-video-nouveau
UpgradeStatus: Upgraded to natty on 2011-05-01 (19 days ago)
dmi.bios.date: 09/03/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: R0180Y9
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:bvnAmericanMegatrendsInc.:bvrR0180Y9:bd09/03/2010:svnSonyCorporation:pnVPCF13Z1R:pvrC6070EHZ:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VPCF13Z1R
dmi.product.version: C6070EHZ
dmi.sys.vendor: Sony Corporation
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu2
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.10.2-0ubuntu2
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Bryce Harrington (bryce)]

Hey nrbrtx,

You filed this bug report against natty, but I see it's still open and
doesn't appear to have much activity recently. So, now that oneiric
is released and stable, this may be a good point for you to upgrade
and re-test if this issue is still present there.

If it's solved in the new release and you think it's worth backporting
the fix, please indicate that. Or if having the fix in the new release
is good enough, feel free to close out the bug (or let us know and we'll
close it.)

If it's not solved, leave the bug report open. I can't promise we'll
get to it (we get way more bugs filed than we can usually get to), but
your testing and feedback can help out if and when we do.

[bugbot (bugbot)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

[Hohle Frucht (hohle-frucht88)]

Hey Firends

I'm relativle new to all this, but I think I have the same Bug under 12.10 with the nouveo driver, because when I switch to the properitar nvidia driver the backlight control works also fine after suspend.
What kind of information should I post?