I've updated BIOS of my laptop to version 411. Without any workaround
nothing works with adjusting brightness keys. With "acpi_osi='!Windows
2012'" work ALL Fn+Fx keys!
I only can tell that if I manually adjust brightness with
xfce4-brightness-plugin notifier, e.g. if I make it low, then if I hit
either Fn+F5 or Fn+F6, brightness changes upto about 80-85 per cent (as I
can see in xfce brightness notifier).


2013/5/6 Christopher M. Penalver <christopher.m.penal...@gmail.com>

> Dmitriy Kodanev, thank you for providing the WORKAROUND. As per
> www.service.asus.com/ an update is available for your BIOS (411). If you
> update to this, and undo any WORKAROUNDs, does this change anything?
>
> ** Changed in: linux (Ubuntu)
>        Status: Confirmed => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1103620
>
> Title:
>   Adjusting brightness with hot keys doesn't work properly on Asus
>   K55VD-SX205R
>
> Status in "linux" package in Ubuntu:
>   Incomplete
>
> Bug description:
>   Full computer model: ASUS K55VD-SX205R
>
>   What you expected to happen:
>   When you push Fn+F5 brightness of screen of Asus K55VD notebook
> decreases.
>   When you push Fn+F6 brightness of screen of Asus K55VD notebook
> increases.
>
>   What happened instead:
>   Hot keys that adjust brightness (Fn+F5, Fn+F6) don't work. Brightness
> stays the same.
>
>   WORKAROUND: 1. sudo gedit /etc/default/grub
>   2. find the line starting with GRUB_CMDLINE_LINUX_DEFAULT
>   3. add "acpi_osi=" to the options
>   4. sudo update-grub2
>   5. reboot
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 12.10
>   Package: linux-image-3.5.0-22-generic 3.5.0-22.34
>   ProcVersionSignature: Ubuntu 3.5.0-22.34-generic 3.5.7.2
>   Uname: Linux 3.5.0-22-generic x86_64
>   ApportVersion: 2.6.1-0ubuntu9
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  dima       1524 F.... xfce4-volumed
>                         dima       1551 F.... pulseaudio
>    /dev/snd/pcmC0D0p:   dima       1551 F...m pulseaudio
>   CRDA:
>    country RU:
>     (2402 - 2482 @ 40), (N/A, 20)
>     (5735 - 5835 @ 20), (N/A, 30)
>   Date: Wed Jan 23 22:27:42 2013
>   HibernationDevice: RESUME=UUID=735e4e23-42a8-40ce-8672-60b4447079ba
>   InstallationDate: Installed on 2013-01-18 (4 days ago)
>   InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Release amd64
> (20121017.1)
>   MachineType: ASUSTeK COMPUTER INC. K55VD
>   MarkForUpload: True
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-22-generic
> root=UUID=b52f24d4-675a-4a0b-a25a-d4b77050e29e ro quiet splash acpi_osi=
> vt.handoff=7
>   RelatedPackageVersions:
>    linux-restricted-modules-3.5.0-22-generic N/A
>    linux-backports-modules-3.5.0-22-generic  N/A
>    linux-firmware                            1.95
>   SourcePackage: linux
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 11/09/2012
>   dmi.bios.vendor: American Megatrends Inc.
>   dmi.bios.version: K55VD.406
>   dmi.board.asset.tag: ATN12345678901234567
>   dmi.board.name: K55VD
>   dmi.board.vendor: ASUSTeK COMPUTER INC.
>   dmi.board.version: 1.0
>   dmi.chassis.asset.tag: No Asset Tag
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: ASUSTeK COMPUTER INC.
>   dmi.chassis.version: 1.0
>   dmi.modalias:
> dmi:bvnAmericanMegatrendsInc.:bvrK55VD.406:bd11/09/2012:svnASUSTeKCOMPUTERINC.:pnK55VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnK55VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
>   dmi.product.name: K55VD
>   dmi.product.version: 1.0
>   dmi.sys.vendor: ASUSTeK COMPUTER INC.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1103620/+subscriptions
>


-- 
С уважением,
Дмитрий Коданёв

-- 
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https://bugs.launchpad.net/bugs/1103620

Title:
  Adjusting brightness with hot keys doesn't work properly on Asus
  K55VD-SX205R

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