On 11/22/12 16:36, ???????????? wrote: > Antti Koskip?? <antti.koskipaa <at> linux.intel.com> writes: > >> >> On 11/20/12 20:24, ????? ??????? 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
