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Windows 7 resizes screen resolution/windows on display power cycle or standby RRS feed

  • Question

  • Hi,
    we have been using Windows 7 for a couple of months now but cannot fix an issue that is driving us crazy. Most of our clients which monitors are connected digitally (DVI or Displayport) are affected, but not all of them (HP Clients with Dell 2408 Displays do not show this behaviour, same displays with Lenovo clients have it):
    Everytime when the monitor standby (not the screensaver) kicks in or we power cycle the Monitor, you can hear the typical "hardware disconnect/reconnect" sound notification (the one you hear when you use USB devices). Funny thing is, that we hear these two sounds when we power ON the display or we move the mouse after the monitor has been in standby. It seems like Windows is changing its resolution temporarily to 1024x768 when this happens because all the windows you had arranged to you liking are positioned in the upper left corner after this.
    There's someone who had the exact same bug:
    http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/windows-7-movesresizes-windows-on-monitor-power/1653aafb-848b-464a-8c69-1a68fbd106aa
    But the fix proposed in that thread just fixes the symptom not the problem (Windows thinking that you unplugged the display) itself. The fix doesnt work on our machines anyway. We tried all possible resolutions (bigger and smaller ones) in that registry key (SIMULATED...) but the windows are still moved about 200px (estimated) to the left.
    What we tried so far:
    - dozens of drivers
    - Power Options
    - Monitor Options
    - Display drivers (Non-PNP, etc.)
    - BIOS of clients
    - Cables
    - Software ("Vanilla Win7" without any drivers or software behaves the same way)
    Affected hardware combinations are: 
    Lenovo 9704 + HP LP2475w Monitor
    Lenovo 9704 + Dell 2408WFP Monitor
    HP 8100 + HP LP2475w Monitor
    Not Affected:
    Lenovo 9704 + Dell 2407 Monitor
    Lenovo 9704 + Dell 2405 Monitor
    HP 8100 + Dell 2408WFP Monitor
    Tuesday, August 30, 2011 6:20 AM

All replies

  • This issue is caused by the video adapter driver and display driver. Try the latest drivers. Do not forget the display drivers. If the drivers cannot resolve this issue, you may contact the computers’ manufacturers support to report this issue. Hope they can fix this.
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”
    • Marked as answer by Arthur Xie Monday, September 5, 2011 4:11 AM
    • Unmarked as answer by grml Monday, September 5, 2011 6:01 AM
    Thursday, September 1, 2011 6:24 AM
  • Thanks Arthur, that's what we thought initially. Videos driver issue. Maybe we have to wait for intel to release a new version (all clients have onboard graphics card). Or we have to contact them directly.

    It's just very strange that we have such "standard hardware" (Dell, HP, Lenovo). Yet we seem to be the only ones which have these problems. (we are very unlucky)

    Thursday, September 1, 2011 7:28 AM