I've got a HTPC a hooked up to a Panasonic L32C3 television that is having display issues. I upgraded the video card to an Nvidia 650 Ti boost from an old ATI HD 5570 card. I never had any display problems with the ATI card (other than it being slow). I'll describe the problems:
1) When I boot the HTPC, the display is fine. But if the HDMI signal to the television is ever interrupted, like switching to cable or the HTPC going to sleep, the signal is lost until the HTPC is rebooted. Black screen. After much googling, I've come to believe that this is a handshake issue. That seems odd given I never had this issue with my old GPU and I'm using the same cable. But whatever, I've ordered a "high speed", hoping that this will fix the problem, but I'm skeptical. Are there any programs out there that can force a Windows 7 machine to try to renegotiate the handshake?
2) If I use the DVI cable, I have another issue. When the signal to the television is interrupted I don't lose the signal like with HDMI, but the screen is messed up, like the wrong resolution is displayed. A bright line several pixels wide appears at the bottom of the screen. If I change the resolution, then change it back, this display issue is fixed, but that's really annoying to do. Does anyone know what is causing this and how I could fix it? The resolution I'm selecting is 1360x768, which is the native resolution of the television. Well, actually 1366x768 is the native resolution according to documentation, but that doesn't ever display correctly. 1360x768 displays fine until the input is changed, then it displays that messed up region at the bottom of the screen.
Nvidia 650 Ti Boost
256 GB Samsung 840 Pro SSD