KVM switch + Windows 7 creates monitor switching nightmare

I didn't want to send people on a wild goose chase with all the updates but here they were from that day.  I hope there are no typos in the numbers...

KB2455826

KB2425227

KB2387530

KB2479628

KB2495644

KB2467023

KB2484033

KB2487426

KB2457592

KB2488113

KB2393802

KB2485376

KB2419640

KB976902

One more comment on the behavior.

I have a dual monitor set-up where my desktop has analog connection thru KVM with my laptop but I have the second monitor connected on the digital cable so I can have Windows Media Center to watch TV on.

Now that it is fixed, the only problem I now have is that if I am working on my laptop (thru KVM), for instance, and I plug a device (mp3 player or headphones) to the desktop, all the windows on the desktop move over to the one screen in use (digital).

I performed a Windows Update the other day and since the Update, I have not had this issue.  

One of the updates was:

http://support.microsoft.com/kb/2454826

There were others, but before I list all of them, perhaps someone might try to load this one on its own and see if that fixes this behavior.

I have this update applied and unfortunately it did not help my problem.

I performed a Windows Update the other day and since the Update, I have not had this issue.  

One of the updates was:

http://support.microsoft.com/kb/2454826

There were others, but before I list all of them, perhaps someone might try to load this one on its own and see if that fixes this behavior.

I have a Switchview KVM, Win 7 Pro 64, two monitors. What is silly about this "feature" is that Win 7 doesn't detect immediately the switch to the other PCs: only when I switch back to it, it fails to detect the second monitor and places everything into one monitor. It would be ideal that Microsoft would release a tweak for this.

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.

Worked for my non KVM switch issue, may help your issues.

This worked for single monitor system w/ IOGear KVM & Nvidia graphics card!  However, the registry key I had to edit was:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration\KVM

Odd side affect: the other system on the KVM is a laptop w/ Intel chipset on XP.  It was switching to single screen (the laptop monitor) then back to dual screen with the KVM.  Now it's retaining the other monitor and doing the same thing as the Windows 7 system was doing.  (This is more probably a side affect of resetting the KVM during troubleshooting - didn't notice until after this change).

Any direction on this key for XP?

Edit:  It seemed like it worked, but not consistently.  I can't figure this out.

2nd Edit:  I purchased a DVI cable, ripped out pin 16 (as Starguy suggested) for the laptop.  The laptop has the "Intel Graphics Media Accelerator Driver for mobile" which automatically changes the displays when a new one is found.  Not finding anything new keeps that computer from remapping the display.  When I went back to the desktop with the Nvidia card, it did not resize.  After a couple of times back and forth it finally did resize.  Trying the patch on the next page.