ATI Radeon 57xx using HDMI, overscan issue (CentOS 5.5 x86_64)

Teibidh · 02-09-2011, 01:41 AM

So, I need to use the HDMI out on my Radeon 57xx because the DVI input on my monitor is in use by another machine that has no other way to connect to it, and I won't swap cables around all the time. Of course, because someone somewhere decided that if it's plugged in to HDMI it must be a TV and have overscan issues I have a nice black box surrounding my screen image.

In Windows I can resolve this by opening CCC and changing the overdrive settings. Thus far I have yet to be able to get CCC to open and the only thing the console tool allows you to do is toggle overscan on and off, which doesn't seem to have any effect so far.

Has anyone gotten this issue resolved? Do I need to focus on getting CCC working (which I probably won't use for anything else...) or is there a console command that can handle the job? Change to xorg.conf? Anything?

eSelix · 02-20-2011, 01:37 PM

I also trying to configure HDMI on ATI, but I have some troubles. You can try following:

Code:

aticonfig --set-dispattrib=dfp1,sizeX:1920
aticonfig --set-dispattrib=dfp1,sizeY:1080
aticonfig --set-dispattrib=dfp1,positionX:0
aticonfig --set-dispattrib=dfp1,positionY:0

or/and

Code:

aticonfig --set-pcs-val=MCIL,DigitalHDTVDefaultUnderscan,0

where "dfp1" is your HDMI card connector name, check "xrandr" for proper name or "aticonfig --query-monitor".