One of the most frustrating experiences for any Media Center user is when a PC connected to a TV resumes from sleep but shows only a black screen. I’ve read plenty of reports about the problem, including some from people I know. It’s happened to me through the years, and about 18 months ago I found a workaround that helped me—putting an HDMI switcher in-line. As a number of commenters noted, that fix isn’t universal. It works on some configurations, but not on others. Here’s how I described the problem back then:
One of the biggest problems that I’ve run into with HDMI connections is one I fondly call the “black screen of amnesia.” This occurs when you power up a device and the TV doesn’t recognize it. Sometimes, flipping to a different input on the TV and then back to HDMI is enough to jog the connection into working again. But I’ve occasionally had to power everything down and restart in the right sequence to get things working.
Recently, I ran into the issue again. In fact, it’s happened a couple times this year, each time when I changed or reconfigured video cards in my primary Media Center PC. But this time, I was able to fix it, and I suspect that my lesson learned will help others as well.
This week, in preparation for a visit from Comcast to set up my new Ceton InfiniTV card, I installed both the new CableCard tuner and an updated video card, a Radeon HD5670. The Windows desktop displayed at the correct resolution, and Media Center appeared perfectly normal. As it always does, the system went to sleep after 20 minutes of inactivity, but when I hit the remote to wake it back up, I got … a black screen. I could hear sounds indicating that the remote buttons were controlling the Media Center interface, but nothing I did would bring back the display, including shutting down the TV, removing the HDMI connector, and reconnecting. I had to press the power switch to get it working again, and when I tried the sleep/resume cycle again, I got the same black screen.
And then I remembered something. My setup includes a five-year-old Sony DLP TV, which runs at 1080i. From the desktop, Windows displays the resolution as 1920×1080 @30Hz—which is the equivalent of 1080i. So everything should be OK, right? But one thing I noticed is that when switching between Media Center and the Windows desktop, there was a pronounced flicker, as if the display were resetting itself to a different resolution in each mode. That, as it turned out, was the key to solving this problem.
Here’s the set of instructions I followed to resolve this problem:
From the Media Center main menu, on the Tasks strip, click Settings, then TV, then Configure Your TV or Monitor. Follow the prompts until you get to the Identify Your Display Type screen:

The logical assumption is to choose TV. Don’t. Choose Flat Panel instead, and then click Next. Choose HDMI as the connection type and Widescreen as the display width. If you’re asked to confirm your current resolution, click No and then click Next to get to this screen.

My TV is a 1080i model, so my natural instinct was to choose the 1080i entry at the bottom of that list. Again, don’t. Instead, choose the "pixels" setting that exactly matches the desktop resolution—in this case 1920 by 1080 pixels (interlaced, widescreen). Your settings might vary, depending on the resolution of the output device. Just make sure it matches the display resolution that Widows is using for the desktop. Allow the system to make its minor adjustments, accept them if they look OK, and then finish the wizard.
After I made this change, sleep and resume began working perfectly again. I’m not sure exactly what was going wrong before, but I’m assuming that the 1080i setting that Media Center was using included some overscan, which caused the Media Center resolution to differ from the desktop resolution. When the system resumes from sleep, the system tries to display the desktop resolution and can’t, resulting in the black screen. But with the two modes set to the exact same values, everything works as expected. As a bonus, that flicker when switching modes is gone.
When I chose TV and 1080i as a default, I experienced another annoying glitch. The Blu-ray playback program I use no longer used full screen mode within Windows Media Center. Instead, it displayed at a lower resolution, with a black band around all four sides. It worked properly outside Media Center, but the whole point of using Media Center is to do everything from a single control point. At the 1920 by 1080 pixels (interlaced) setting, Blu-ray disks and DVDs use the full display again.
I have no idea whether this fix will work for every Media Center setup, but if you’re experiencing this problem it’s worth a try. Let me know in the comments whether it works for you.





