Arch Linux

tester01

Member

Registered: 2010-12-10

Posts: 1

alittle help with dual-setup with ati radeon 5770

Hello everyone, I have been trying to setup a dual display with 2 flat panel monitors.

1. A WestingHouse Digital Electronics "17"
2. A Goldstar Company Ltd "23" (Main Display)

Im currently running the gnome desktop, what im trying to setup, is have both the gnome desktop show up on both monitors. For example if I wanted to move something from my main monitor to the smaller one to the left of me, I want to NOT be able to do that, and only have the mouse be able to move accross the 2. 2 Seperate desktops one 2 seperate screens. Im not quite sure what its called, Im thinking maybe its a clone Desktop? Anways, The graphics card Im using is an
Ati Radeon 5770, has 2 vga ports. I currently have the "video-ati" driver installed and works well with my main screen, but im unable to get my secondary screen (to the left of me) working. I tried going into System>>Preferences>>Monitors, and tried tinkering with the display, and tried enabling the 2 monitors and moving them from left to right, to see if that would possibly let it show up or start to function, but only the main screen works. I generated a new xorg.conf, since I didnt have one prior to installing Arch, I was following these to guides

http://en.gentoo-wiki.com/wiki/X.Org/Dual_Monitors

http://en.gentoo-wiki.com/wiki/X.Org/Dual_Monitors/ATI

both are very nice, but Im still not quite understanding yet. Defiantly am trying. I edited my xorg.conf a few times, but got the same results each time, just the screen going blank and X crashing.  I have here a copy of my xorg.conf, Xorg.conf.log, and xrandr output

Xorg.conf
http://pastebin.com/hbmdKrfv

Xorg-logs
http://pastebin.com/USZvtAMJ  (Im thinking the Vsync and Hsync have something that might help)

Xrandr
http://pastebin.com/2cV95Ef4

Thank you guys!

JamieKitson

Member

From: UK

Registered: 2010-10-18

Posts: 161

Website

Re: alittle help with dual-setup with ati radeon 5770

xorg.conf should not be necessary, run something like this command:

xrandr --output DVI-0 --auto --output DVI-1 --auto --same-as DVI-0

Knute

Member

From: Minot, ND

Registered: 2009-03-17

Posts: 604

Re: alittle help with dual-setup with ati radeon 5770

An xorg.conf may not be necessary, but I still find it nice to have the control that the file provides.

In looking over yours, I see several things that could be causing your problems.

First off,  I notice that you have Screen0  that is using Card0 and Monitor0.  This part looks ok. 
When I look at Screen1, I notice that you are using  ATI Graphics Adapter1 and Monitor1.   I don't see entries for either of those, although you have an ATI Graphics Atapter2, but there is no entry for your second monitor.

I also notice that you are trying to use both radeon and fglrx as drivers.  As far as I know (and I don't have an ATI video card at the moment), you can use one driver or the other, but not both.

After you have these things fixed, then you can put in the Screen section in your server layout to describe the positioning of your second monitor.

All in all, the issues that you have to fix are minor,  but frusterating if you are too close to the situation. 

Good luck.

---

Knute