Turning Off Monitor Disables USB Wifi?

Feb 26, 2011

I have a desktop PC running W7x64 for which I rely on my Alfa AWUS036H wireless USB adapter for an internet connection.

Windows 7 has a feature that seems to detect whether I turn off my monitor or not (for one reason, I know this because it makes a noise when I turn it on or off). When I turn my monitor off, my internet is disabled for some reason. I would like it to stay enabled so that I can download files and keep other active connections while the monitor is switched off.

I can verify that the indicator light on the USB adapter turns off when the monitor turns off and that the wireless utility that controls the device senses no device is present (i can see this using my secondary monitor, behavior only occurs when primary monitor is turned off).

Does anyone know how to disable this from happening? I have tried both turning off "Selective USB Suspend" and unchecking the "Allow computer to turn this device off" in the properties of the wireless adapter in device manager.

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Not Sure if this helps but...
My Computer:
mobo: AsRock 970 Extreme 3
processor: Fx 4100
gpu: Radeon hd 6570
PSU: Inland Silver Series ILS-600-2 600 Watt
OS:Windows 7 Ultimate x64

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I am going to preface this by saying that this has *nothing* to do with restoring from sleep or hibernate modes. In searching for an answer to this issue, I found way too much related to that.

My problem is simple. Occasionally (~50% of the time) when I turn the monitor back on after shutting it off, it will stay blank and not really turn back on. It makes no difference how long the monitor has been off. After turning it back on, the power light is green, indicating there is a signal, but the screen is black.

Again, the computer has not slept or hibernated. I simply shut off the monitor and later come back to turn it on. The same thing will happen occasionally if Windows shuts the monitor off after the configured time. (I did that last part as a test; I typically do not automatically shut it off.)

Specs:

OS: Windows 7 64-bit

CPU: Intel Core i7 860

MB: Asus P7P55D

Memory: 8GB - Corsair CMX6GX3M2A1600C9 (2 x 2 x 2GB)

Graphics: NVIDIA GeForce 8800 GTS 640MB

Monitor: Chimei CMV 221D

NVIDIA Drivers: 8.17.11.9562 (11/20/2009)

I originally thought it was the OS that was hung. However, I was able to go into the start menu and restart ("Start" -> "Right" -> "Right" -> "R"), so I know the OS was there responding to my commands.

Attempts to fix:

- Restart the computer. This worked.

- Shut off the power to the monitor and turn it back on. This works most of the time.

- Lock and unlock Windows. This works after a few tries.

- Hit CTRL-ALT-DEL followed by ESC. This works after a few tries.

So, I have a fairly simple work around now. So this is only a minor annoyance. Hitting CTRL-ALT-DEL then ESC does seem to work. I don't think it is a placebo because I waited 5 minutes and it did not come back, but after 2 cycles of that, it came back. I think that fixes it because it causes full screen refreshes.

Does anyone have any ideas or has anyone seen this before? The drivers are recent, but I noticed this with the clean-install Windows 7 drivers for this card as well. This is a very clean and very recent install (3 days). I never had this problem with Vista 32-bit, the same graphics card, recent drivers, but different CPU/motherboard/memory.

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