KVM not detected when computer wakes from sleep

February 2, 2013 at 19:05:38
Specs: Windows 7
My keyboard, mouse and monitor are connected to my Dell XPS 8300 using a KVM switch (USB). Everything works fine until I use sleep mode. The computer will only wake using the power button, and I am unable to use the mouse or keyboard at the lock screen. If I plug a spare mouse directly into the Dell, it works, but then I have to log into the guest account and reboot to get the KVM back online.

I have tried two different KVM switches, first an old Master View CS-104U, the an Iogear GCS632U. Same problem persists with both. In the past, I think this problem only occurred when I manually put the Dell to sleep, but now it happens after auto sleep too.

What can I do?

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February 2, 2013 at 19:46:20
"What can I do?"

Don't use sleep. Adjust your power settings.


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February 2, 2013 at 20:15:45
In order to save the planet, XP--and I think later OS's--had a power saving option to shut off power to a USB root hub it determined wasn't in use.



"If you're experiencing mouse lockups or failures, it may be because your computer is automatically turning off the power to a USB Root Hub.

1) Go to your Control Panel > System > Hardware tab > and click on the "Device Manager" button.

2) In the Device Manager window, find the item or items labeled "Universal Serial Bus controllers." Open it, and double-click the first item called "USB Root Hub."

3) In the USB Root Hub Properties dialog, click on the "Power Management" tab.

4) "Allow the computer to turn off this device to save power" is checked by default. Uncheck this box, and click "OK."

When governments outlaw guns only outlaw governments will have guns

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