Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Trying to install prop drivers for my Radeon HD6850 card on crunchbang (debian-based linux).

Followed these instructions for install from repo and used aticonfig instead of amdconfig to create an initial xorg.conf file. This didn't give any options though and on the web I see countless references to "Monitor-CRT1" and "Monitor-DFPx" without any explanation as to their significance or where they got them from.

I have a dual screen 'shared' desktop. The initial aticonfig left me with a single monitor default config. How do I come up with a config that mirrors my setup?

Running X.org 1.10

share|improve this question
Most probably autoprobed data from the connected monitors. – vonbrand Mar 14 '13 at 12:46
can you expand on how to do that? – rutherford Mar 14 '13 at 13:44
When X starts, it probes for a lot of information on the graphics card and connected monitors. When creating a xorg.conf file, this information is dumped into it. Otherwise you'd have to trawl all over Google and the manufacturer's sites, and assorted other random sites, to find the required data. That was the way to do it, way back then. Only there was no Google... and to add more fun, bad configuration could fry the monitor. – vonbrand Mar 14 '13 at 17:06
I didn't have an xorg.conf file until I ran aticonfig? – rutherford Mar 14 '13 at 22:07
I suppose so, yes. – vonbrand Mar 14 '13 at 22:08

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.