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Old 03-11-2012, 05:33 PM   #1
Kaiser Soze
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13.37 and AMD Dual Monitor Issues


I have googled this extensively and found similar threads on LQ.org about this same topic. After attempting the suggestions in the locations already mentioned, I am still stuck and unable to create a dual monitor desktop.

The configuration that I desire is this:
HDMI from MoBo (Radeon HD 4250) to my left monitor
DVI from PCI (Radeon HD 4350) to my right monitor

I installed the AMD Catalyst 12.2 Proprietary Linux x86 Display Driver version 12.2 and opted for creation of a Slackware Specific Package. After installing that package, I ran
Code:
aticonfig --initial=dual-head --dtop=horizontal --screen-layout=right
Output for consideration:
lspci: http://pastebin.com/W0vegGgV
X.org log: http://pastebin.com/7YbgD9kj
X.org config: http://pastebin.com/au0cpAYm

Some of the funky behavior that I notice is that lilo occurs on DVI (right monitor - PCI). Boot and login (CLI from RL3), as well as X after starting it, are on HDMI (left monitor - MoBo). Any help is greatly appreciated. Thank you in advance.
 
Old 03-11-2012, 10:48 PM   #2
cascade9
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If you've got a monitor that has DVI + VGA or HDMI + VGA, and your motherboard supports VGA + DVI/HDMI (most HD 4250s do) you should be able to run dual monitors from the board and get rid of the PCI card. That should fix at least some of the funkiness. If the HD 4250 supported HDMI + DVI at the same time it would be easier, but AFAIK they wont do that.

If you've got a motherboard that has a PCIe x16 slot, getting a cheap ATI 5450 would also let you run daul monitors (HDMI + DVI) from a single card. It would be possible from a PCI card, but the PCI cards are about twice as much as the PCIe card, and PCI is slower.
 
Old 03-11-2012, 11:14 PM   #3
Kaiser Soze
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Thanks...NewEgg has a couple (Option 1 and Option 2) that would fit that bill, but I would rather see if I could figure this out (or get help in doing so) before resorting to that.

After running xorgsetup, I have video input on the right monitor, but it is just vertical lines. I noticed that the driver has "radeonhd", so I attempted to swap that out for "fglrx", but it just hang once I issued "startx".

I am going to continue to troubleshoot this, but hopefully someone can enlighten me as to what I need to do and/or where to look.
 
Old 03-12-2012, 07:28 PM   #4
tmmukunn
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Quote:
Originally Posted by Kaiser Soze View Post
Thanks...NewEgg has a couple (Option 1 and Option 2) that would fit that bill, but I would rather see if I could figure this out (or get help in doing so) before resorting to that.

After running xorgsetup, I have video input on the right monitor, but it is just vertical lines. I noticed that the driver has "radeonhd", so I attempted to swap that out for "fglrx", but it just hang once I issued "startx".

I am going to continue to troubleshoot this, but hopefully someone can enlighten me as to what I need to do and/or where to look.
I've never ran a dual monitor configuration, but I was looking at your XOrg.conf. Shouldn't the second Device configuration specify the BusID to be 02:0:0
 
Old 03-13-2012, 09:39 PM   #5
b1tch-x
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This may not help, but I was trying dual monitor on the same card and googled to death. Finally I found a few commands which resolved it for me. You may be able to swap the VGA-0 or DVI-0 labels for your aliases (if you have some).

xrandr --output VGA-0 --mode 1152x768
xrandr --output VGA-0 --left-of DVI-0

When I booted-up initially both monitors displayed similar displays, but it was all funked up. After running the above commands each desktop took it's appropriate display.
 
Old 03-18-2012, 04:50 PM   #6
Kaiser Soze
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unfortunately, xrandr only shows the one monitor
 
Old 03-18-2012, 05:02 PM   #7
TobiSGD
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Have you tried to set up your monitors with the Catalyst Control Center, since you already have the proprietary drivers installed?
 
Old 03-18-2012, 05:12 PM   #8
Kaiser Soze
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Quote:
Originally Posted by TobiSGD View Post
Have you tried to set up your monitors with the Catalyst Control Center, since you already have the proprietary drivers installed?
yes, but Catalyst tells me "You currently have only one desktop enabled. Configuring more than one desktop in the Display Manager will allow you to configure Xinerama"

AND I can't configure multiple desktops in Catalyst either
 
  


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