2 Replies Latest reply on Mar 14, 2017 1:58 PM by Intel Corporation

    screen turns off- and on if PSR is enabled


      I have the problem that if Panel Self Refresh (PSR) is enabled in the Intel driver settings, which is the default setting, my panel switches off- and on every few seconds (when not using the computer). When PSR is disabled, the issue does not appear. Nevertheless, I would like to use PSR to have a higher battery life, so the issue should be fixed. I already swapped the display without success.




      Answers (N/A if not applicable)


      Provide a detailed description of the issue

      If PSR is enabled, panel turns off- and on every few seconds

      Please place an X to the right of the option showing how often you see this issue using specific steps. (Ex: 'Every few times a game is started it flickers.' <- This would be "Often")

      Always (100%):

      If PSR is enabled

      Hardware (HW)

      Brand and Model of the system.

      Dell Latitude E7450

      Hybrid or switchable graphics system?
      ie Does it have AMD or NV graphics too?


      Make and model of any Displays that are used to see the issue (see note2 below).
      = Local Flat Panel (Laptop panel)
      EFP = External Flat Panel (Monitor you plug in)

      LFP B140HAN01.1 1A

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


      Provide any other hardware needed to replicate the issue.
      ie: Cables&brand, cable type [vga, hdmi, DP, etc], dock, dongles/adapters, etc

      internal eDP connection

      Hardware Stepping (see note1 below).


      Software (SW)

      Operating System version (see note2 below).

      Windows 10 1607

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


      Graphics Driver version; for both integrated Intel and 3rd party vendors (see note2 below).

      SW or Apps version used to replicate the issue.



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


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

      Full HD

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

      battery mode

      How to repro

      Please provide steps to replicate the issue.  These steps are very crucial to finding the root cause and fix.
      A screenshot to illustrate the issue is a huge plus. A video of the failure is even better! Attach to the post or provide the YouTube link.

      1. make sure you have Latitude E7450 with internal display B140HAN01.1
      2. make sure PSR is enabled
      3. dont move cursor
      4. -> screen turning off and on

      heres a video: Shared album - Martin Jü - Google Photos  first: PSR enabled -> problem appears, then: PSR disabled -> no problem