original kernel: Linux tdlap6 2.6.32-21-generic #32-Ubuntu SMP Fri Apr
16 08:09:38 UTC 2010 x86_64 GNU/Linux
No screen brightness adjustment possible. Workaround: "acpi=ht"

Tested upstream kernel
linux-image-2.6.34-020634rc6-generic_2.6.34-020634rc6_amd64
Screen boots to 100% brightness, even if set to minimum during BIOS post
* with no boot options, hot keys activate screen brightness applet.
But screen brightness does not actually change
* with "acpi_backlight=vendor" option, screen brightness applet does
not show up, actual screen brightness does not change

Tested linux-image-2.6.32-02063209-generic_2.6.32-02063209_amd64.deb
* screen brightness can be adjusted. Applet doesn't show. But fan
running at highspeed and only one processor showing on my i5 !#!?!
* system booted with device not found, then disk repair

On Mon, May 3, 2010 at 6:48 PM, Jeremy Foshee
<email address hidden> wrote:
> Hi Tony,
>
> If you could also please test the latest upstream kernel available that would be great.  It will allow additional upstream developers to examine the issue.  Refer to https://wiki.ubuntu.com/KernelMainlineBuilds .  Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag.  This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.  Please let us know your results.
>
> Thanks in advance.
>
>    [This is an automated message.  Apologies if it has reached you inappropriately; please just reply to this message indicating so.]
>
>
> ** Tags added: kj-triage
>
> ** Changed in: linux (Ubuntu)
>       Status: New => Incomplete
>
> --
> Screen brightness can not be adjusted in Lucid for Gateway NV59 with Intel Arrandale graphics
> https://bugs.launchpad.net/bugs/573984
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “linux” package in Ubuntu: Incomplete
>
> Bug description:
> PROBLEM
> Hot keys for adjusting screen brightness do not work in Karmic or Lucid for Gateway NV59 laptop with Arrandale Graphics.
> Under Karmic, workaround was to adjust screen brightness while still in BIOS post.
> Karmic would boot with the selected screen brightness
>
> Under Lucid, screen brightness goes to 100% when booting, ignoring brightness set during boot.
> Hot keys for adjusting brightness do not work.
>
> RESULTS
> Tried the following:
>
> * Setting memory directly under /proc
> Results: memory for VGA brightness would change but display wouldn't actually change
>
> CHANGING BOOT PARAMETERS:
>
> # GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nolapic acpi_backlight=vendor"
> # above line doesn't solve problem
> # GRUB_CMDLINE_LINUX="acpi=off"
> # above line allows screen brightness but hyperthreading is off
> GRUB_CMDLINE_LINUX="acpi=ht"
> # above line allows screen brightness adjustment at cost of power, core temp?
> # GRUB_CMDLINE_LINUX="acpi_generic_hotkey"
> # above line doesn't solve screen brightness problem
> # GRUB_CMDLINE_LINUX="acpi=strict"
> # above line does not solve screen brightness problem
> # GRUB_CMDLINE_LINUX="acpi_osi=Linux"
> # above line does not solve screen brightness problem
> # GRUB_CMDLINE_LINUX="acpi=noirq"
> # above line doesn't solve
> # GRUB_CMDLINE_LINUX="acpi=noacpi"
> # above line does not allow screen brightness adjustment
> # GRUB_CMDLINE_LINUX="acpi_backlight=vendor"
> # above line does not work
> # GRUB_CMDLINE_LINUX="i915.modeset=0"
> # above line make linux unbootable. Have to book off USB/CD and manually edit grub.conf
>
> BEST WORKAROUND
> GRUB_CMDLINE_LINUX="acpi=ht"
> # above line allows screen brightness adjustment at cost of power, core temp?
>
>
> Linux tdlap6 2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:09:38 UTC 2010 x86_64 GNU/Linux
>
> ProblemType: Bug
> DistroRelease: Ubuntu 10.04
> Package: linux-image-2.6.32-21-generic 2.6.32-21.32
> Regression: Yes
> Reproducible: Yes
> ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
> Uname: Linux 2.6.32-21-generic x86_64
> AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
> Architecture: amd64
> ArecordDevices:
>  **** List of CAPTURE Hardware Devices ****
>  card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> AudioDevicesInUse:
>  USER        PID ACCESS COMMAND
>  /dev/snd/controlC0:  tonydiep   1621 F.... pulseaudio
> CRDA: Error: [Errno 2] No such file or directory
> Card0.Amixer.info:
>  Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 22'
>   Mixer name   : 'Intel G45 DEVIBX'
>   Components   : 'HDA:10ec0272,1025033d,00100001 HDA:14f12c06,10250093,00100000 HDA:80862804,80860101,00100000'
>   Controls      : 26
>   Simple ctrls  : 13
> Date: Sun May  2 16:39:17 2010
> HibernationDevice: RESUME=/dev/sda5
> InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
> MachineType: Gateway NV59
> ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=53103199-f27c-4ef8-879c-bf122b4216fe ro acpi=ht quiet splash
> ProcEnviron:
>  LANG=en_CA.utf8
>  SHELL=/bin/bash
> RelatedPackageVersions: linux-firmware 1.34
> RfKill:
>  0: phy0: Wireless LAN
>        Soft blocked: no
>        Hard blocked: no
> SourcePackage: linux
> dmi.bios.date: 11/26/2009
> dmi.bios.vendor: Phoenix Technologies LTD
> dmi.bios.version: V1.09
> dmi.board.name: NV59
> dmi.board.vendor: Gateway
> dmi.board.version: Rev
> dmi.chassis.asset.tag: No Asset Tag
> dmi.chassis.type: 10
> dmi.chassis.vendor: Gateway
> dmi.chassis.version: Rev
> dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.09:bd11/26/2009:svnGateway:pnNV59:pvrRev:rvnGateway:rnNV59:rvrRev:cvnGateway:ct10:cvrRev:
> dmi.product.name: NV59
> dmi.product.version: Rev
> dmi.sys.vendor: Gateway
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/573984/+subscribe
>



-- 
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