I've some questions about the settings in the aticonfig tool. I'm using the X1950XTX card which has 2 outputs. The first question is, if I want to have these 2 outputs active for 2 screens, is this called dual-head or is it called multiple adapters?
My second question is, if I want my 2 screens to be cloned, should I use the option --dtop? Though, at the bottom of the description, it tells me this is not valid in dual-head? Is this only possible for multiple adapters?
Why are there 2 options for changing the screen resolution? Which one should I use for dual-head respectively multiple adapters?
Change the desktop setup for multiple display adapters.
STRING can be one of:
single 1 screen, second dark
mirror 2 screens - same content, identical
Note: This option is NOT supported with Avivo
clone 2 screens - same content, allows for
different refresh rates/resolutions
horizontal 2 screens - one framebuffer,
screen 1 right of screen 0
horizontal,reverse 2 screens - one framebuffer,
screen 1 left of screen 0
vertical 2 screens - one framebuffer,
screen 1 above of screen 0
vertical,reverse 2 screens - one framebuffer,
screen 1 below of screen 0
Note: This option is not valid if '--initial=dual-head' is specified.
So is this only do dual-head? What about multiple adapters?
Set the modes for the specified screen. You may specify several
resolutions separated by commas.
Screens start at 0. You can use 1 for dual-head
Change the modes for the second display. You may specify several
resolutions separated by commas. Only valid for clone and big desktop
Set the secondary screen position for dual head.
So the last question, what's this for? I want to look at movies on my projector, should I use this option?
Choose which head the hardware overlay should be visible on. The
hardware overlay can be used for either OpenGL, video or
Many questions from a confused fellow!
(I miss a good guide and description of the aticonfig settings, I'm almost refusing to edit the xorg.conf manually, because many tips on internet are some times outdated, and also some options may change for each driver update).