sony-vaio-z-series team mailing list archive

[Joël Bourquard <joel.bourquard@xxxxxxxxx>]

Thanks for the info Norbert.

Sorry to hijack your thread a bit - but is there a known issue with newer
Vaio's (eg: Z13) for setting the backlight power on recent kernels in 64-bit
mode ?  I can't say whether the problem is new, because I just got the
hardware a few days back, but so far, nothing works for me.

- I tried "nvclock" (latest version from CVS today) and it says it doesn't
support my hardware.
- I tried the "nvidia-bl" module, which logs its writes to dmesg but has no
effect on the backlight.
- I tried the ACPI (/sys and /proc) entries and they do nothing for me.
- I also tried "setpci" commands to no avail.

I have tried with kernels 2.6.36 and 2.6.37-rc2, on Gentoo Linux.

I have the patched BIOS with static switching enabled, and the hardware
switch is set on Speed.  X works great with the Nvidia driver *but* I found
no way to set the brightness so far !

Thanks in advance for any insight, I'm lost...

Best regards,

Joël


On Thu, Nov 18, 2010 at 4:18 PM, Norbert Preining <preining@xxxxxxxx> wrote:

> For those with backlight issues (Fn-F5/F6 does not work) please see
> bugzilla bug report:
> https://bugzilla.kernel.org/show_bug.cgi?id=22722
> where there is a patch that fixes this problem. It took me some
> time to convince the people that this is a bug, but finally  there
> is a fix for it.
>
> Best wishes
>
> Norbert
> ------------------------------------------------------------------------
> Norbert Preining            preining@{jaist.ac.jp, logic.at, debian.org}
> JAIST, Japan                                 TeX Live & Debian Developer
> DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
> ------------------------------------------------------------------------
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