Comment 15 for bug 524967

Dear Francesco,

Today Mr. Tovalds released the new linux kernel. It has some kind of fix for
sony. I'm going to test it this evening after work.
I'll let you know if the issue has changed/resolved. More information can be
found here http://lkml.org/lkml/2010/5/16/89

Regards,
Bastiaan

On Tue, May 18, 2010 at 11:26 AM, Francesco Giudici
<email address hidden>wrote:

> Dear bas,
> I really don't know when an official fix will be available.
>
> I think that the problem is related to the change in the way fn keys are
> dealt with: the new trend is to manage the events generated by the key
> pressure using gnome power management (or something like that, I don't
> remember exactly).
> I have fixed the problem just adding the key pressure events in the "old"
> acpi management mode (acpid I think). Then I have binded the managed events
> with custom scripts that use the setpci utility to manipulate video
> brightness.
>
> I have done it just for myself... then posted to give a quick fix to
> other having the same issue.
>
> The problem is that fn keys generate custom events from one manifacturer to
> another and often from one model to another inside the same vendor!. So, it
> is almost impossible for developer to release software containing all the
> fn-keys events binding for all the laptop models of all the vendors.
> Anyway, when the problem hits many people (i.e., the laptop is bought by
> many people using linux) then probably an official fix will be released.
>
> So, I don't think that an official fix will be released very soon.
>
> Cheers
>
> Francesco
>
> --
> Screen brightness doesn't work on Vaio Y
> https://bugs.launchpad.net/bugs/524967
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “gnome-power-manager” package in Ubuntu: In Progress
>
> Bug description:
> Binary package hint: acpi-support
>
> On a Sony Vaio VPCY115FX (Y series) with the Intel Corporation Mobile 4
> Series Chipset Integrated Graphics Controller (Mobile Intel GS45 Express
> Chipset) running Karmic 64-bit, the screen brightness control doesn't work,
> although the Fn keys seem to be sending the right signals (and also being
> correctly interpreted by Gnome).
>
> The output of acpi_listen is
>
> sony/hotkey SNC 00000001 00000011 (Fn+F6 struck - brightness +)
> sony/hotkey SNC 00000001 0000003b (Fn+F6 released)
> sony/hotkey SNC 00000001 00000010 (Fn+F5 struck - brightness -)
> sony/hotkey SNC 00000001 0000003b (Fn+F5 released)
>
> I have tried the following procedures, with no effect.
>
> - http://ubuntuforums.org/showthread.php?p=2877962
> - http://ubuntuforums.org/showthread.php?t=733322
>
> This problem has also been reported for previous and current versions of
> Ubuntu, on different Vaio laptops with different graphic cards.
>
> - http://ubuntuforums.org/showthread.php?t=1404806
>
> ProblemType: Bug
> Architecture: amd64
> Date: Sat Feb 20 14:54:25 2010
> DistroRelease: Ubuntu 9.10
> InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
> Package: acpi-support 0.129
> ProcEnviron:
> LANGUAGE=pt_BR.UTF-8
> LANG=pt_BR.UTF-8
> SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
> SourcePackage: acpi-support
> Uname: Linux 2.6.31-19-generic x86_64
>
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