https://community.intel.com/t5/Graphics/Graphics-Issues-with-Intel-Dynamic-Contrast-Enhancement-Display/m-p/197588#M781 <P>I have an Intel HD 4400, which is in Optimus with an Nvidia 750M, this is on a Dell laptop, with Dell custom graphics software it is out of date and present the same fault.</P><P></P><P>When I view a screen with white it shows the normal gamma, contrast, brightness, etc, when I view a screen with black, the display tries to gradually step the contrast higher which causes viewing issues and eyestrain, it's also very poor for image reproduction. </P><P></P><P></P><P></P><P>The drivers I have tried are:</P><P></P><P>10.18.15.4279 Intel</P><P></P><P>10.18.15.4240 Dell</P><P></P><P></P><P>I'm using Windows 10 64 bit, all drivers, and firmware are the latest except for Intel IMEI, which is at version 9.5 because there is a bug with sleep/hibernation/power off where it hangs while being unusable. I posted elsewhere on the forum about that.</P><P></P><P></P><P><A href="http://imgur.com/a/fWvn0">http://imgur.com/a/fWvn0</A> Here is an image of the setting turned off in Intel HD graphics control panel &gt; power &gt; Display power saving technology, despite this setting it still changes the contrast dynamically.</P><P></P><P></P><P>The problem occurs when the device is plugged in and set on high performance, balanced, or power saver, I have also disabled the built in display saving in Windows power options.</P><P></P><P>If I unplug the a/c adaptor, then replug it, the dynamic contrast does not occur for some time, there is clearly a problem with the software causing this setting to be occurring even though it's turned off.</P> Thu, 01 Oct 2015 22:36:59 GMT nnone4 2015-10-01T22:36:59Z https://community.intel.com/t5/Graphics/Graphics-Issues-with-Intel-Dynamic-Contrast-Enhancement-Display/m-p/197588#M781 <P>I have an Intel HD 4400, which is in Optimus with an Nvidia 750M, this is on a Dell laptop, with Dell custom graphics software it is out of date and present the same fault.</P><P></P><P>When I view a screen with white it shows the normal gamma, contrast, brightness, etc, when I view a screen with black, the display tries to gradually step the contrast higher which causes viewing issues and eyestrain, it's also very poor for image reproduction. </P><P></P><P></P><P></P><P>The drivers I have tried are:</P><P></P><P>10.18.15.4279 Intel</P><P></P><P>10.18.15.4240 Dell</P><P></P><P></P><P>I'm using Windows 10 64 bit, all drivers, and firmware are the latest except for Intel IMEI, which is at version 9.5 because there is a bug with sleep/hibernation/power off where it hangs while being unusable. I posted elsewhere on the forum about that.</P><P></P><P></P><P><A href="http://imgur.com/a/fWvn0">http://imgur.com/a/fWvn0</A> Here is an image of the setting turned off in Intel HD graphics control panel &gt; power &gt; Display power saving technology, despite this setting it still changes the contrast dynamically.</P><P></P><P></P><P>The problem occurs when the device is plugged in and set on high performance, balanced, or power saver, I have also disabled the built in display saving in Windows power options.</P><P></P><P>If I unplug the a/c adaptor, then replug it, the dynamic contrast does not occur for some time, there is clearly a problem with the software causing this setting to be occurring even though it's turned off.</P> Thu, 01 Oct 2015 22:36:59 GMT https://community.intel.com/t5/Graphics/Graphics-Issues-with-Intel-Dynamic-Contrast-Enhancement-Display/m-p/197588#M781 nnone4 2015-10-01T22:36:59Z https://community.intel.com/t5/Graphics/Graphics-Issues-with-Intel-Dynamic-Contrast-Enhancement-Display/m-p/197589#M782 <P>In this case, please fill out the following information to report this graphics issue here:</P><P>/thread/77761 <A href="https://communities.intel.com/thread/77761">https://communities.intel.com/thread/77761</A></P> Fri, 02 Oct 2015 21:27:46 GMT https://community.intel.com/t5/Graphics/Graphics-Issues-with-Intel-Dynamic-Contrast-Enhancement-Display/m-p/197589#M782 IUman 2015-10-02T21:27:46Z