[arch-general] Screen Scaling Issues

[Matthew Monaco]

On 08/08/2012 07:36 AM, Alfredo Palhares wrote:
> Hello, i am having some problems setting up Xorg correctly.
> 
> I have a ATI Radeon 7750 codename "Cape Verde"
> VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cape Verde PRO [Radeon HD 7700 Series]
> 
> I have a problem when i start X, on 1920x1080 the screen is not fully used, i get some black border
> all around the screen.
> To "fix" this i have to open amdcccle and in the DTV(1) section -> Adjustments and on 
> Scalling Options i have to move the bar from 0 to zero again.
> 
> This does solve the problem, but it does not persist between reboots (does not change Xorg.conf at all
> even as root). Is it possible to set this as an option on the xord.conf ? I probably does, but I 
> failed to find the name of that option.
> 
> As attachemnt goes my catalyst config file
> 
> Any sugestions are welcomne.
> 
> --
> Regards
> Alfredo Palhares
> 

Sounds like an underscan/overscan issue. Try

xrandr --output <output name> --set underscan off