1 2 Previous Next 16 Replies Latest reply on Jan 16, 2016 7:30 AM by fjtorsol

    Intel HD 4400 brightness management issues

    fjtorsol

      I have the following  issues with my Optimus based laptop:

       

      - Manually disabling "Display Advanced Energy Saving" with Intel Graphics CPL stops taking effect after sleep (it is ignored and enabled again). Please Intel disable this for 6-bit LCD panels as this combined with your static dithering leads to a very bad image quality.

       

      - Changing brightness level seems to have a serious input lag leading to jumpy brightness transitions. The strange thing comes whenever I play a hardware accelerated video through a WMF enabled application; the input lag disappears and the brightness transitions became very smooth even if the video is played in a very small window. All the power management settings are set to maximum performance. I am unable to reproduce the same behaviour with DirectX, OGL or OCL instances it only happens with videos played through WMF. Also this only happens with Windows and not Linux (Fedora).

        • 1. Re: Intel HD 4400 brightness management issues
          joe_intel

          Can you provide the DxDiag report (press Windows* key + R key, type “dxdiag”, press OK and then click “Save All Information”)?

          What driver versions have you tested? Did you test the drivers provided by your system manufacturer? Which ones appear to be affected by this issue?

          • 2. Re: Intel HD 4400 brightness management issues
            fjtorsol

            It happens with both the latest drivers provided by the manufacturer and Intel. Also previous versions have shown this behaviour.

            Here is the DXDiag dump:

            http://1drv.ms/1GCDe5Q

            • 3. Re: Intel HD 4400 brightness management issues
              fjtorsol

              Any news ongoing technical investigations or so?

              • 4. Re: Intel HD 4400 brightness management issues
                joe_intel

                Issue 1: I do not see the option you mentioned above in the Intel® HD Graphics UI. I see Display Power Saving Technology, and it remains disabled after resuming from sleep.

                Issue 2: I did not fully understand how to replicate it. What video application are you using?

                • 5. Re: Intel HD 4400 brightness management issues
                  fjtorsol

                  Apparently the feature has a different name in latest driver versions, yes it is now called "Display power saving technology" in my case while the Intel CPL states it is disabled it appears that such setting is ignored by the driver after both hibernation and sleep. In order to get the driver to re-read the setting (which ignores after resume) and get this feature disabled I have to unplug and re-plug the power cord. Then it gets disabled even if I disconnect the power cord again until I sleep or hibernate the system again. It is very annoying as my 6-bit (per channel) panel relies on dithering to show 24-bit (RGB) colour depth and this feature reduces the image quality considerably as it makes all the dithers flicker constantly when it is enabled.

                   

                  Respect to the other issue:

                   

                  1 - Fresh boot into Windows -> Brightness levels are uneven and jumpy if changed.

                  2 - Windows Media Player launched and hardware accelerated video playback is started (WMF hardware accelerated codec). -> Suddenly the brightness levels are even and smooth if changed.

                  3 - Video file is closed or ends, WMP remains open. -> Brightness levels are uneven and jumpy if changed.

                  • 6. Re: Intel HD 4400 brightness management issues
                    fjtorsol

                    Any news/ongoing research on this issues??

                    • 7. Re: Intel HD 4400 brightness management issues
                      Bryce@Intel

                      Hi fjtorsol

                      Please see Microsoft KB here: https://support.microsoft.com/en-us/kb/3046889

                       

                      For the other "jumpy" issue, I'm unclear what the issue is. The debug engg assigned to the case requested more information to proceed with the investigation. Could you please provide the below?

                       

                      Category

                      Questions

                      Answers (N/A if not applicable)

                      Description

                      Provide description of the issue & whether it’s consistent or sporadic.

                       

                       

                       

                      Hardware (HW)

                      Model of the system.

                       

                      Hybrid or switchable graphics system?

                       

                      Make and model of Displays that are used to see the issue (see note2 below).

                       

                      How much memory in the system (see note2 below).

                       

                      Provide any other hardware needed to replicate the issue.

                       

                      Hardware Stepping (see note1 below).

                       

                      Software (SW)

                      Operating System version (see note2 below).

                       

                      VBIOS (video BIOS) version.  This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.

                       

                      Graphic Driver version (see note2 below).

                       

                      SW/Apps version used to replicate the issue.

                       

                      Configurations

                      Single display, dual clone or extended (see note2 below).

                       

                      Display resolution & refresh rate setting of each display (see note2 below).

                       

                      AC or DC mode, i.e., is AC plugged in or not?

                       

                      How to repro

                      Please provide numbered steps to replicate the issue.  These steps are very crucial to finding the root cause and fix. Screen shot (or Video!) to illustrate the issue is a huge plus!

                       

                      1.

                      2.

                      3.

                      4.

                      5.

                      NOTE1:

                      1. 1) Go to “Device Manager”. Double click on “Display adapters”, right click on “Intel(R) HD Graphics…” and select “Properties”, select “Details” tab, select “Hardware Ids” in Property drop-down box.  Capture this info (save as screenshot) and include as an attachment in the Intel Community Forum.

                       

                      NOTE2:  Please follow these instructions below to collect info.

                      DxDiag Instructions:

                      I see you already provided. Thanks

                       

                      DispDiag Instructions:

                      1. 1) Click on the “Start Menu” -> Type “cmd” -> Then a command shell window will open
                      2. 2) In the command shell, type “dispdiag -out %homepath%\Desktop\DispDiag-Intel-Issue.dat” -> The command shell will output something similar to “Dump File: C:\Users\[username]\DispDiag-########-######-#####-#####.dat”
                      3. 3) Locate the .dat file on your desktop and include DispDiag-Intel-Issue.dat
                      • 8. Re: Intel HD 4400 brightness management issues
                        fjtorsol

                        Category

                        Questions

                        Answers (N/A if not applicable)

                        Description

                        Provide description of the issue & whether it’s consistent or sporadic.

                        It is always reproducible with my current setup.

                        Hardware (HW)

                        Model of the system.

                        Dell Inspiron 7737

                        Hybrid or switchable graphics system?

                        Yes

                        Make and model of Displays that are used to see the issue (see note2 below).

                        Two displays? did I ever mentioned such thing? anyway the two GPUs are:

                        1- Intel(R) HD Graphics 4400

                        2- NVIDIA GeForce GT 750M

                        How much memory in the system (see note2 below).

                        16GB PC3-12800

                        Provide any other hardware needed to replicate the issue.

                        (The OEM supplied charger)

                        Hardware Stepping (see note1 below).

                        PCI\VEN_8086&DEV_0A16&SUBSYS_05FC1028&REV_09

                        Software (SW)

                        Operating System version (see note2 below).

                        Windows 8.1 Pro 64-bit (6.3, Build 9600) (9600.winblue_r9.150322-1500)

                        VBIOS (video BIOS) version.  This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.

                        VBIOS version is not reported neither by CUI nor GPU-z

                        Graphic Driver version (see note2 below).

                        10.18.14.4222

                        SW/Apps version used to replicate the issue.

                        Windows Mobility Centre, Windows Media Player

                        Configurations

                        Single display, dual clone or extended (see note2 below).

                        Single internal: LGD02DA

                        Display resolution & refresh rate setting of each display (see note2 below).

                        1920 x 1080(p) (60.012Hz)

                        AC or DC mode, i.e., is AC plugged in or not?

                        AC/DC plug/unplug  change between before and after sleep and hibernation (Windows fast boot included) seems to trigger the issue.

                        How to repro

                        Please provide numbered steps to replicate the issue.  These steps are very crucial to finding the root cause and fix. Screen shot (or Video!) to illustrate the issue is a huge plus!

                        1. On a fresh boot (no sleep/hibernation/windows fast boot) enter Windows Mobility Centre .

                        2.  Rapidly change brightness level with Windows Mobility Centre between levels 0-100. The brightness intensity abruptly goes from 0-100 without crossing interstitial brightness levels.

                        3. Open Windows Media Player and play a video that uses a GPU accelerated codec in loop.

                        4. While the video is still playing rapidly change brightness level with Windows Mobility Centre  between levels 0-100. The brightness intensity smoothly goes from 0-100 crossing all interstitial brightness levels and generating a smooth transition.

                         

                        Respect to the other issue it is exactly the same as the one in the link (anyway the workaround is still quite rudimentary). What I still do not understand is why if the setting is disabled in first place the driver does even contemplate to enable it (ignoring the fact AC/DC state update is no reported).

                         

                        Category

                        Questions

                        Answers (N/A if not applicable)

                        Description

                        Provide description of the issue & whether it’s consistent or sporadic.

                        It seems to happen if the AC/DC plug status is different before and after sleep or hibernation (Windows 8 fast boot included).

                        Hardware (HW)

                        Model of the system.

                        Dell Inspiron 7737

                        Hybrid or switchable graphics system?

                        Yes

                        Make and model of Displays that are used to see the issue (see note2 below).

                        Two displays? did I ever mentioned such thing? anyway the two GPUs are:

                        1- Intel(R) HD Graphics 4400

                        2- NVIDIA GeForce GT 750M

                        How much memory in the system (see note2 below).

                        16GB PC3-12800

                        Provide any other hardware needed to replicate the issue.

                        (The OEM supplied charger)

                        Hardware Stepping (see note1 below).

                        PCI\VEN_8086&DEV_0A16&SUBSYS_05FC1028&REV_09

                        Software (SW)

                        Operating System version (see note2 below).

                        Windows 8.1 Pro 64-bit (6.3, Build 9600) (9600.winblue_r9.150322-1500)

                        VBIOS (video BIOS) version.  This can be found in “information page” of CUI (right click on Desktop and select “Graphics Properties”.

                        VBIOS version is not reported neither by CUI nor GPU-z

                        Graphic Driver version (see note2 below).

                        10.18.14.4222

                        SW/Apps version used to replicate the issue.

                        (Windows built-in brightness settings, Power settings/Mobility Centre)

                        Configurations

                        Single display, dual clone or extended (see note2 below).

                        Single internal: LGD02DA

                        Display resolution & refresh rate setting of each display (see note2 below).

                        1920 x 1080(p) (60.012Hz)

                        AC or DC mode, i.e., is AC plugged in or not?

                        AC/DC plug/unplug  change between before and after sleep and hibernation (Windows fast boot included) seems to trigger the issue.

                        How to repro

                        Please provide numbered steps to replicate the issue.  These steps are very crucial to finding the root cause and fix. Screen shot (or Video!) to illustrate the issue is a huge plus!

                        1. On a fresh boot (no sleep/hibernation/windows fast boot) enter CUI and disable display power saving or verify it was already disabled.

                        2.  Sleep/hibernate or shutdown with Windows fast boot enabled taking note of the AC/DC plug status (either plugged or not)

                        3. Before resuming the computer either plug or unplug the power cord depending on how the computer was before sleep/hibernate or shutdown with Windows fast boot and doing the opposite.

                        4. Resume the computer. Sudenly display power saving is active even with the CUI showing it is disabled.

                        5. Unplug and replug the power cord (in case it was not plugged plug and unplug) and display power saving will get disabled again matching the CUI setting.

                        • 9. Re: Intel HD 4400 brightness management issues
                          Bryce@Intel

                          fjtorsol,

                          Is this still failing for you? If so, please retest latest and provide your results. I'll provide your results to investigation team. Thanks.

                          • 10. Re: Intel HD 4400 brightness management issues
                            fjtorsol

                            The brightness level transition bug persists but can no longer be worked around with Windows Media Player.

                            Brightness transitions are not smooth because the driver jumps from level A to D without going trough levels B and C.
                            (note A, B, C and D are members of an example series to explain the issue and not necessarily match internal HEX brightness values).

                             

                            The bug mentioned in Microsoft support article KB3046889 is apparently fixed.

                             

                            Tested operating system :     Windows 10 64-bit 10.0.10586.17 (Win10 TH2)

                            Tested driver version :          20.19.15.4300

                            • 11. Re: Intel HD 4400 brightness management issues
                              EstebanC_Intel

                              Hello, fjtorsol:

                               

                              I went ahead and performed some tests from my end.

                               

                              I disabled the "Display Power Saving Technology" feature in the Intel® Graphics Panel, then restarted the system and this was still enabled.

                               

                              Also played some videos, changed the brightness of the display and it ran smoothly.

                               

                              My configuration:

                              Intel® 4th gen processor

                              Graphics driver: 20.19.15.4326 (may change from one OEM to another)

                              NVIDIA GeForce GT 750M driver: 10.18.13.5900

                              Windows 10* Home 64-bit build 10586.36 version 1511

                              16GB RAM

                               

                              My recommendation would be to check if your OEM has released a newer graphics driver.

                               

                              I think this may be a hardware issue.

                               

                              I look forward to your outcome.

                               

                              Regards,

                              Esteban C

                              • 12. Re: Intel HD 4400 brightness management issues
                                fjtorsol

                                It might not be reproducible unless the same LCD panel/laptop motherboard combo is used. For the case of my laptop many display options were available at purchase time. Mine is LG Philips LP173WF1 (Dell K6PJ1) a 1080p LVDS TN panel with LED backlight.

                                 

                                Respect to Dell support I am quite tired of dealing with it, the last "technician" was unable properly re-assemble the computer even though the assembly manuals were public. Also he forgot screwing the DVD drive which I found one day completely out of the device. With some deep housing scratches (due to incorrect tools/open procedures used) and a loose touchpad as a final prize it is definitely not an option for me. Luckily the last piece of software I use in my workflow has been finally ported to the Mac and I will no longer have to deal with this broken ecosystem for my next laptop.

                                • 13. Re: Intel HD 4400 brightness management issues
                                  Bryce@Intel

                                  Thanks for the explanation, sry to hear you went through some trouble with servicing.

                                  We're unable to replicate what you're indicating and you're correct in that this could be unit / configuration specific.

                                  As such, I'll mark this as a SUF 'Single Unit Failure' and close for now, unless/until someone else chimes in with a different config that can help us replicate.

                                  1 of 1 people found this helpful
                                  • 14. Re: Intel HD 4400 brightness management issues
                                    fjtorsol

                                    The bug mentioned in Microsoft support article KB3046889 is not fixed sadly I was able to reproduce it today.

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