Does the Radeon 4870 not do 1080p?

Y

Yoma44

Limp Gawd
Joined
Jul 3, 2008
Messages
132
I just got a super-nice new Pioneer Plasma (Elite PRO-151FD) and I wanted to hook it up to my Radeon 4870, but by default it won't let me select 1080p (1920x1080). The Catalyst Control center shows I have a "Pioneer TV" and says it has a maximum display res of 1920x1080, but that never shows up in any of the resolution drop down lists.

My Planar monitor that I usually use with this computer runs at a high resolution, so I don't know what's up. Is it because I'm using the DVI-to-VGA adapter?

By default it sets it to 1280x1024. What drivers or changes do I need to do to get it to work?
 
lloose said:
Just force the resolution.
Click to expand...
I must be doing something wrong, because I'm trying to do that. I did set it to be 1920x1080 in the "Maximum Resolution" section of ATI's control panel, but that didn't change the resolution nor add the option from the resolution drop down menu.

Any more specifics on how I force the resolution?
 
DVI to VGA is crap.

DVI to HDMI is what you need to unleash the 1080.

 
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Ya you need DVI to HDMI. I have that right now on my 42' LG Scarlet and Blu-Ray rocks with it. I dont think VGA is HDCP compliant.
 
I got the video working by using a dvi to hdmi adapter. However I can't get sound to go through the hdmi cable. Anyone know how to set that up in Vista? I thought I did it right but I don't hear anything.
 
Yoma44 said:
I got the video working by using a dvi to hdmi adapter. However I can't get sound to go through the hdmi cable. Anyone know how to set that up in Vista? I thought I did it right but I don't hear anything.
Click to expand...


sound isnt gonna transfer from that dvi slot on your 4870.. that adapter wont make sound work.

you either ned a native hdmi output frm your card or your gonna be using a seperate sound cable.
 
dajet24 said:
you either ned a native hdmi output frm your card or your gonna be using a seperate sound cable.
Click to expand...
That (integrated HD4870 audio controller), or he needs to use the other DVI port on the HD4870. I had the same problem on my HD4650. Sound only comes through one of the two DVI ports using an HDMI cable on my card.
 
Nothing special needed, just some sort DVI>HDMI either adapter or cable. From what I have seen in the manual you need it hooked to the correct dvi slot as I believe only 1 slot carries sound(mine is tinted yellow)

Then right click the speaker or go to control panel/hardware and sound/sound. And set "Digital output device(HDMI)" to default.

Personally I mainly use it for movies, so I just set MPC to use the HDMI as default so its automatic when I drag a movie onto my TV. Or if you use ffdshow you can set it there also.
 
I think pxc is right, the DVI on the bottom of the card has the HDMI sound output.
 
If not use HDMI-HDMI cable with the DVI-HDMI adaptor from ATI, some cards need the adaptor to use the audio output.
 
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