Re: Thinkpad R61i : Brightness Problem with Fn keys
--- On Fri, 8/22/08, umesh debian <umesh.debian@gmail.com> wrote:
> From: umesh debian <umesh.debian@gmail.com>
> Subject: Thinkpad R61i : Brightness Problem with Fn keys
> To: "SmartList" <debian-laptop@lists.debian.org>
> Date: Friday, August 22, 2008, 9:00 AM
> Hi All,
>
> I have installed Debian Lenny on my machine(Thinkpad R61i).
> I am using
> custom kernel 2.6.25.6 with changes for USB modems.
> The ALSA sound module is working fine and the Volume keys
> are working
> with the GUI indication(volume is going up and down).
>
> But the Brightness keys (Fn+Pgup or Pgdwn) are not working
> fine. The
> GUI indication is happening but the Brightness is neither
> going down
> nor up.
>
> But if in ROOT console i manipulate brightness through the
> proc file
> system, then brightness is getting changed.
>
> This brings down brightness
> echo 4 > /proc/acpi/ibm/cmos
>
>
> This brings up brightness
> echo 5 > /proc/acpi/ibm/cmos
>
> During this too i am getting the GUI indication from the
> tpb module.
>
> Any suggestions on how to debug this?? I am using KDE 3.5.9
>
> Regards,
> Umesh
>
>
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You can try to replace the driver I had the same problem with Nvidia drivers. Try new one!
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