Windows 7 moves/resizes windows on monitor power cycle

Anonymous
2010-10-08T22:13:48+00:00

I have a new W7 ultimate install on a new PC (AOpen DEX4501 w intel GM45 graphics). I have installed the latest Intel graphics drivers 8.15.10.2202, and all relevant windows updates.

It is connected via HDMI to a Grundig Misuro HD TV. My resolution is set to 1600x900, windows recommended resolution is 1920x1080 but this displays badly so I don't use it.

When Windows sleeps, or I turn off (then later on) the monitor, most windows are moved/resized to the upper left with the lower right at 1024x768.

Firefox, Excel(2003),Explorer windows resize/move, Outlook(2003) did not move/resize.

I have a Samurize (Gadget like) display on the right which someimes get relocated to the top left, but not this morning. The windows resize/move also happens when Samurize is not running.

I have found three other entries related to this;

They don't seem to have been resolved for a long time.

This is a Windows monitor power managment issue, can it be fixed please it is very annoying.

I won't be recommending W7 to others with such issues outstanding.

Windows for home | Previous Windows versions | Devices and drivers

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Anonymous
2010-10-09T02:55:58+00:00

I have found a work-around.

Using Sysinternals ProcessMonitor I found that Windows was accessing the following Registry path;

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration

My system had three entries;

DELF003YY7707BR0MUL_30_07D7_6A^9A3774EB79DEE3E3E38496CC7DF4D936

QHD32000001_31_07D6_D5^63E1ABDD175E7871DCAEB710418A0F75

SIMULATED_8086_2A42_00000000_00020000_1010100^CDE365D1B3F0942F0CF38BFB8E127AB4

Under each is a tree called "00" two of the keys are

PrimSurfSize.cx

PrimSurfSize.cy

Under "00" was another branch also called "00" two of the keys are;

ActiveSize.cx

ActiveSize.cy

The first two of the configs (ie DELF00... & QHD3...) the above keys were 1440x900,

so they were not involved.

The third (SIMULATED...) were set to 1024x768.

I changed these to 1600x900 and the problem was solved.

Further I changed resolution (via control panel) to 1920x1080, the moving/resize issue returned,

but the lower right corner was set to 1600x900, ie the SIMULATED... settings.

So for some reason one of the configs does not get set correctly.

I don't know why there are three configs, I have only ever used one monitor.

Hope this helps someone out there...

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  1. Anonymous
    2015-09-11T11:11:43+00:00

    Yes dude and it's so easy to test. Just reach out and hit the monitor power. You'll see immediately, when the monitor comes back on whether the regedit window resized

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  2. Anonymous
    2015-09-12T03:19:29+00:00

    Thank you! MichaelAtOz

    I have never had this problem with my current hardware/drivers until I upgrade to Windows10.  This confirm my suspicion that windows setting is the culprit.

    From my experiment, the problem was solved by changing the following two keys:

    Path:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration[Simulated Configuration]\00

    Keys:

    PrimSurfSize.cx 

    PrimSurfSize.cy

    Change this two key to your screen resolution.  (For me, PrimSurfSize.cx=2560 and PrimSurfSize.cy=1440)

    The change should take effect immediately without logout or restart.

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  3. Anonymous
    2015-09-13T14:59:55+00:00

    Same here... :-(

    It would work on 2560x1440 resolution, I agree, but on a UHD screen every window get's squeezed in a 2560x1440 corner on the upper left. I haven't found any workaround on this. My guess is, that the SIMULATED top resolution is WQHD. But frankly I don't want to spend my days working on a Microsoft bug.

    It just shows how few people using 4k and how much Microsoft cares about them. What an annoying shame.

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  4. Anonymous
    2015-09-13T16:08:27+00:00

    Just want to add my complaint for the record - I am still struggling to get 2560x1440 to work on two different computers, one DVI, one DP.

    I am using Windows 10, deleted all the Configuration entries in the Registry and re-started. Two entries were created,

    MS_00033_00_07D2_68^053F0EFEF06B4081A061218DDBD8A55E

      > 00

           > 00

    NVT78C521573_01_07DC_93^D3B7C0A20BF5F02821F15BA821D1CE17

      > 00

           > 00

    My motherboard seems to have a 1024x768 embedded display support which I assume relates to the first entry. The second entry has the correct numbers for my 2560x1440 monitor connected by DVI. I have never seen a "SIMULATED" entry that people have discussed on this board.

    Overall behavior is very frustrating. If I sleep from the Start Menu, then resume from the front panel power switch (but making sure the monitor itself is resumed first), the desktop layout is correct. So something at a basic level does work!

    But typically, if the computer sleeps on timeout, or if the monitor is asleep when the computer resumes, bad things happen.

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