Radeon 5450 won't do high resolution

[Yelof]

I've got an issue with my new Radeon HD 5450 triple monitor card. (http://www.cdwg.com/shop/products/VisionTek-5450-512M-PCIe-3x-DVI-LP/2422043.aspx?enkwrd=ALLPROD%3a|900344|All%20Product%20Catalog)

I've got two monitors running on dvi which work great and a HDTV (60 inch Sharp led) running on hdmi (dvi to hdmi converter). Everything's working except the HDTV has some pixelation issues plus the resolution will not go above 1024x768. When I do try to boost the resolution the TV just blacks out.

I have installed the very latest Catalysts Control Center.

Any help would be greatly appreciated.

 

[mauller07]

i would check what resolution your telly supports.

the blockyness on the telly can also be due to picture processing, make sure to turn off any picture processing features for the hdmi connection the pc is on.

 

[Yelof]

i would check what resolution your telly supports.

the blockyness on the telly can also be due to picture processing, make sure to turn off any picture processing features for the hdmi connection the pc is on.

I checked the resolutions and it's supposed to be able to handle 1920x1080. Also there is no picture processing happening. I've turned all that off.

 

[mauller07]

i would go into the catalyst control centre hdtv options and check if you can set the tv to 1920x1080 30hz, it could be that your telly does not support 1920x1080 at 60hz

 

[Yelof]

i would go into the catalyst control centre hdtv options and check if you can set the tv to 1920x1080 30hz, it could be that your telly does not support 1920x1080 at 60hz

Ok so setting the TV to 1920x1080 at 30hz also causes it to black out.

 

[mauller07]

what happens if you disconnect one of the monitors and run just 1 other monitor and the telly?

 

[backuse]

Hi guys,

Since I am having the same problem with my Radeon HD 5450 card and Philips HDTV I was wondering whether Yelof has figured out an answer to this problem?

Thanks!