[ltp] Re: Thinkpad X60s - brightness problems

[Ondrej Balaz]

On 2007-10-17, character <char@online.de> wrote:
> I've got the same problem with my X61 Tablet. You may want to look at my
> thread from monday (2007-10-15).
>
> I don't know a solution yet except installing Ubuntu (or using the
> xbacklight workaround).
>
> Btw., using Ubuntu's kernel did not help, neither did Ubuntu's acpid,
> acpi-support and/or gnome-power-manager.

Maybe they have special HAL quirks. But HAL isn't core part of each distribution
- important functionality like this mustn't depend on things like HAL.

>
> char
>
> On Wed, 2007-10-17 at 11:54 +0000, Ondrej Balaz wrote:
>> Hello,
>> I'm running 2.6.23.1 on my Thinkpad X60s with BIOS version (2.13 ) (08/10/2007).
>> Since 2.6.19 I have same problem - brightness regulation doesn't work properly
>> on my laptop. I'm using thinkpad-acpi (now 0.18). Fn+Home/End works in console
>> but there are some problems (when I overstep limits, brightness regulation
>> brightness regulation has slow reactions).
>> 
>> In X11 I cannot (!) regulate brightness, when X starts, brightness shoots up to
>> 100% and stays no matter how I regulate it. With older releases of thinkpad-acpi
>> or kernel I'm able to regulate brightness but everytime when DPMS event occures
>> (display off) it also shoots up to 100% (but I can regulate it). Anyway it
>> drains my battery a lot.
>> 
>> I'm running on Debian experimental/unstable without HAL. Only acpid and X11 with
>> evilwm. I'm not familiar with other distros (I don't want ubuntu, suse etc...)
>> 
>> Is there anybody with working configuration based on latest kernel (vanilla +
>> thinkpad-acpi), howto, or hints ? 
>> 
>> Thank you for response.
>> 
>> -- 
>> Ondrej `blami' Balaz
>> 
>


-- 
Ondrej `blami' Balaz