From: "Antti Koskipää" <antti.koskipaa@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: Re: how to disable dpst on linux?
Date: Thu, 22 Nov 2012 17:47:39 +0200 [thread overview]
Message-ID: <50AE491B.9020702@linux.intel.com> (raw)
In-Reply-To: <loom.20121122T153220-850@post.gmane.org>
On 11/22/12 16:36, РоманМельник wrote:
> Antti Koskipää <antti.koskipaa <at> linux.intel.com> writes:
>
>>
>> On 11/20/12 20:24, Роман Мельник wrote:
>>> Good day!
>>>
>>> I've sent already mail, but got no response, so trying again.
>>> Please advise how to disable dpst on linux? The module is i915. As I
>>> see, windows driver has such checkbox for this. Can I do the same on linux?
>>
>> The linux driver does not support DPST at all.
>>
>
> But I definitely see that when the laptop works from battery, it changes
> dynamically the contrast of the screen depends on what the summary brightness of
> the screen (the more dark pixels - the more screen has less contrast). If this
> is not DPST, so that what can it be and how to disable this? Thanks!!
It could be CABC (Content Adaptive Backlight Control) which is a similar
technology but is implemented fully in hardware, in the panel. How you
can disable (and IF you can disable it) depends completely on the hardware.
--
- Antti
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next prev parent reply other threads:[~2012-11-22 15:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-20 18:24 how to disable dpst on linux? Роман Мельник
2012-11-22 10:34 ` Antti Koskipää
2012-11-22 14:36 ` РоманМельник
2012-11-22 15:47 ` Antti Koskipää [this message]
2012-11-23 16:51 ` РоманМельник
2012-11-28 16:53 ` Jesse Barnes
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