Artifacts R400 weird screen (integrated graphics) running Win 7 RTM

Pretty much no matter what I do - I keep seeing weird "artificats" on my screen (integrated display and when to use an external monitor).  It is not a particular activity that requires even if switching windows exacerbates the problem.  I tried to use the pre-installed driver Win 7 and the latest drivers from Intel's RTM (Intel® Graphics Media Accelerator Driver for Windows 7 Release Candidate), and it made no difference.

What I see on the screen, it's as if a DVI connection is bad, but I can only compress/maximize the active window and immediately cleared debris from the screen.  I have a lot of free memory and don't have many applications open at any time. If I take a screen when this happens, debris from the screen appears there too, probably isn't the output device, but something is happening with the graphics card itself.

I disabled the Aero graphics until someone can help me understand what is happening.  I should not have done it on a new computer laptop!  What is the problem here?

All,

We have published a official tip on what lies on our support site.

Visual corruption - ThinkPad R400, R500, T400, T400s, T500, W500, X 200, X200s, X 200 Tablet, X 301

Symptom

Visual corruption is seen on the screen. He tends to start isolated to a specific application window, but then starts quickly appear on all other windows in the application, and the office. Corruption usually appears as garbled text or images scrambled.

Configurations affected
The following configuration:
Microsoft Windows Vista or Windows 7 (32-bit or 64-bit)
Intel Virtualization Technology for Directed-IO (VT - d) is enabled in the BIOS Setup utility.
There are two bars of memory DIMM in the system, and they have a different size (for example, 2 GB and 1 GB).
On one of the following systems:
ThinkPad R400(*1), R500(*2)
T400(*1), T500(*1), T400s ThinkPad
ThinkPad W500(*1)
ThinkPad X 200, X200s, X 200 Tablet, X 301
* 1: for models with switchable graphics, the system must be integrated graphics mode to see the failure.
* 2: models with integrated only graphics.

Workaround

Option 1:
Disable virtualization for directed-IO (VT - d). This can be done in the BIOS Setup utility. When the system is first start (during POST), press F1 to enter the Setup utility. Then enter the Config menu and the submenu of the CPU. Changing VT - d for persons with reduced mobility.

Option 2:
Make sure that there is only a single memory DIMM in the system.

Option 3:
Make sure the memory of two DIMMs in the system are of equal size. For example, both are 2GB.
VT - d
Virtualization for directed-IO (VT - d) technology is an assist of hardware for virtualization of i/o device (primary the DMA and interrupts). VT - d is not necessary to support a virtual machine running (to the knowledge of Lenovo at the moment). Some VMMs require that material help for virtualization to be activated, but it is a separate VT - d setting. In the same screen of the BIOS Setup, there is a parameter called virtualization technology, which is the most commonly used feature.
Here is a link to the Intel site describing Vt - d.

Tags: Lenovo Products

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