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T410: Problem with video card and Windows Aero with 4GB Memory


I have a T410 with 256Mb of Video Memory and 1440x900 display, a T61 with 128Mb of Video Memory and 1400x1050 dsplay and external monitor HP w2338h with 1920x1080 resolution.


If I connect external monitor to my T410 and launch Visual Studio 2010 Beta 2 - image blinks and comes back with Aero disabled. Looking through event logs reveals the lack of memory. Simply running multiple instances of Visual Studio 2010 Beta 2 without external monitor causes Aero disabled as well.


Now If I do the same with my old Thinkpad T61, connect the same monitor using the same cable - I can open as many Visual Studio 2010 Beta 2 instances I like (tried 5) and nothing blinks and Aero stays enabled.


After doing some more checks there seems be an issue of using 4Gb sticks on T410 currently that results in video output artifacts and aero interface problems when using Lenovo supplied drivers v8.16.11.8825. I can confirm this to be true. 


Possible workaround is to install modified EliteBook 8440p video driver (read along this thread) comes with a BIG drawback of not being able to change brightness level within Windows 7. To sweeten it a little bit - you can set luminance level at POST screen, when computer boots up.


Error log:


Log Name:      Application
Source:        Desktop Window Manager
Date:          2/4/2010 7:32:21 PM
Event ID:      9020
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A

The Desktop Window Manager has encountered a fatal error (0x8007000e)
Error 2/4/2010 7:32:21 PM Desktop Window Manager 9020 None


Does anyone know what path should I pursue to solve this issue?


Most of the community users get it fixed with the following driver.  Should you still have the same issues, please start a new topics for discussion. 


Software name      NVIDIA Display Driver

Support models     ThinkPad T410, T410i
                   ThinkPad T510, T510i
                   ThinkPad W510

Operating System   Microsoft Windows 7  32-bit / 64-bit
  Refer to marketing materials to find out what computer models support which Operating Systems. Versions (Graphics) (Audio) Support devices NVIDIA Quadro FX 880M NVIDIA NVS 3100M


Win 7 32-bit

Win 7 64-bit

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