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7870 not working via HDMI

foxrocks

Junior Member
Having a bit of a nightmare here after upgrading from a GTX 560 Ti. Here's the story so far:

- Downloaded CCC 12.9 beta. Uninstalled Nvidia drivers. Shut down PC, swapped cards.

- Booted back up. No image on TV via HDMI (although it displayed "1080p/50Hz" so seemed to be getting...something).

- First checked hardware. Card seated ok, power cables in and fans spinning. Put 560 Ti back in just to check. Worked fine. Put Radeon back in, no dice.

- Took PC to work the next day (because believe it or not I seem to no longer have a monitor anywhere in the house). Tried it on a Dell U2311H via DVI. Worked fine. Installed CCC 12.9 beta.

- Took PC home and hooked up to TV again. No image during POST but got an image once Windows loaded. Scaling was pretty fucked up but I managed to get it looking ok.

- Tried to play Skyrim, but it didn't properly detect the card. The launcher listed 'Radeon 7800 series' at the top, but I couldn't change any settings and the game refused to load.

- Switched back to the monitor (which I'd borrowed from the office). Skyrim worked fine via DVI. Uninstalled 12.9 beta and installed 12.8.

- Hooked HDTV back up, and now I'm back to no image whatsoever via HDMI.

I'm pretty close to saying fuck it and trying an Nvidia card instead at this point, because the HDMI signal the Radeon is putting out seems pretty messed up. I'm in the UK and the TV is a PAL Panasonic TX-50GT30, if that helps.

Any suggestions? :'(
 
Is there a way to adjust the HDMI signal between NTSC and PAL? I don't even know if that's part of the digital HDMI standard, just speculating. But don't PAL TVs throw a fit if you send them an NTSC signal, perhaps the video card is defaulting to that?
 
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