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Issue with Displayport and Windows 7

C

chiablo

Limp Gawd
Joined
Feb 6, 2005
Messages
387
I've been having a problem and I'm hoping someone here has a viable solution...

I have a displayport monitor (Samsung 750) and I'm experiencing some very strange behavior with Windows 7. I'll explain my symptoms and what I think is happening...

  • I put my PC to sleep when it is not in use to reduce power. If the monitor is powered on before the PC is, windows will not see the display. I have to power cycle the monitor before it will show anything.
  • If the PC turns the monitor off after a moment of inactivity (power saving setting), windows will get stuck in a loop of constantly detecting new hardware then removing it. The display will cycle between being on and off until manually powered off or I move the mouse to reactivate the display (which usually requires a power cycle of the monitor before it starts working again.)

I suspect what is happening is that unlike DVI, VGA , or HDMI, with Displayport, Windows treats it as a plug-n-play device and will remove it from the device manager if it is powered off. I know this because if I shut the Displayport monitor off, windows will make my second DVI display the primary and move my desktop icons there. It also plays the "badunk" noise of a device being disconnected.

So my question is... is there a way to have windows NOT remove a device from device manager, even if the device is no longer present? Or am I the only person experiencing this frustration?

If I use HDMI on the display, I encounter none of these problems, but I lose the 120Hz capability, which is why I got the monitor to begin with.
 
Let me guess, you are using an AMD graphics card.

Update your graphics card drivers to 12.6 or 12.7 beta and this should be fixed, I believe.
 
Mine disconnects as well, HP 2310e, but only when I shut it off.
When the monitor sleeps I get no disconnection.

I also don't put my machine to sleep, it stays on 24/7.
 
Sn0_Man said:
Let me guess, you are using an AMD graphics card.

Update your graphics card drivers to 12.6 or 12.7 beta and this should be fixed, I believe.
Click to expand...

Not sure what I'm using now, I'll check on this when I get home and hopefully it fixes it.
 
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