Basic setup: I have an ATI Radeon HD 5970 connected to a DVI monitor and, via a Displayport-HDMI adapter, to my Yamaha HTR-3063 Home Theater. The Home theater is further connected to an Optoma HD-20 projector.
I just did a fresh reinstall of Windows 7 and installed the latest Catalyst drivers (yeah, I know, but they worked fine for me before) and noticed something really queer happening.
The Problem: If my projector is OFF, every time I connect my home theater to the gfx card, it causes my main monitor to blank out. If I turn on the projector, the monitor does as well and both displays work, as either duplicated or extended desktops. Pulling out the home theater HDMI wire from the gfx card reinstates the monitor. Pulling out the projector HDMI wire from the home theater does not.
The LCD display is the primary monitor and I need it to be on all the time. The home theater is my primary sound device hence it also needs to be on all the time (Audio over HDMI.. which works perfectly, even if main display gets switched off). The projector, I only turn on for watching films, hence its off most of the time.
This setup had worked perfectly in the past, I seem to have messed something up in the reinstall.
In short: How do I prevent my main display from being switched off every time I connect my home theater to my gfx card.
Additional info, if it helps: There was a similar issue in my previous install of Win7 where when I'd boot up a fullscreen game, it would disable my Home Theater wire (hence killing sound). This was easily subverted by extending desktop to the home theater and restarting game.
I just did a fresh reinstall of Windows 7 and installed the latest Catalyst drivers (yeah, I know, but they worked fine for me before) and noticed something really queer happening.
The Problem: If my projector is OFF, every time I connect my home theater to the gfx card, it causes my main monitor to blank out. If I turn on the projector, the monitor does as well and both displays work, as either duplicated or extended desktops. Pulling out the home theater HDMI wire from the gfx card reinstates the monitor. Pulling out the projector HDMI wire from the home theater does not.
The LCD display is the primary monitor and I need it to be on all the time. The home theater is my primary sound device hence it also needs to be on all the time (Audio over HDMI.. which works perfectly, even if main display gets switched off). The projector, I only turn on for watching films, hence its off most of the time.
This setup had worked perfectly in the past, I seem to have messed something up in the reinstall.
In short: How do I prevent my main display from being switched off every time I connect my home theater to my gfx card.
Additional info, if it helps: There was a similar issue in my previous install of Win7 where when I'd boot up a fullscreen game, it would disable my Home Theater wire (hence killing sound). This was easily subverted by extending desktop to the home theater and restarting game.
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