Arch Linux

Albi

Member

Registered: 2007-07-05

Posts: 10

Catalyst unable to set modes other than 2048x768 (dual monitor)

No idea why, here's my xorg.conf. To me it seems like it's ignoring it entirely.

Section "ServerLayout"
    Identifier     "aticonfig Layout"
    Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Files"
EndSection

Section "Module"
EndSection

Section "Monitor"
    Identifier   "aticonfig-Monitor[0]-0"
    Option        "VendorName" "ATI Proprietary Driver"
    Option        "ModelName" "Generic Autodetecting Monitor"
    Option        "DPMS" "true"
EndSection

Section "Device"
    Identifier  "aticonfig-Device[0]-0"
    Driver      "fglrx"
    Option        "VideoOverlay" "on"
    Option        "OpenGLOverlay" "off"
    Option        "DesktopSetup" "horizontal"
    Option        "Capabilities" "0x00000800"
    Option        "PairModes" "1280x1024,1280x1024"
    Option        "OverlayOnCRTC2" "1"
    BusID       "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier "aticonfig-Screen[0]-0"
    Device     "aticonfig-Device[0]-0"
    Monitor    "aticonfig-Monitor[0]-0"
    DefaultDepth     24
    SubSection "Display"
        Viewport   0 0
        Depth     24
        Modes    "1280x1024"
    EndSubSection
EndSection

I enabled the "Big desktop" using the graphical tool, but it's really annoying since both my monitors need 1280x1024 to look best but it won't let me choose 2560x1024; it doesn't show it graphically and when I put it in my xorg.conf it just ignores it.

If there's any more information needed just tell me
My card is Radeon 9600 Pro

SlodS

Member

Registered: 2007-03-21

Posts: 20

Re: Catalyst unable to set modes other than 2048x768 (dual monitor)

I actually haven't reviewed your xorg.conf, but if you're talking about fglrx ignoring your settings, you should look at /etc/ati/amdpcsdb (.default) (or even move/delete it). It seems that this file overrides options in xorg.conf.

Good luck

vuboy

Member

From: Canada

Registered: 2008-03-04

Posts: 78

Re: Catalyst unable to set modes other than 2048x768 (dual monitor)

Ah the big desktop woes.
Use Xandr to verify your modes.
Once verified, try setting your resolution via your desktop manager and not Catalyst Control.
Also a Virtual Mode maybe needed in your xorg.conf.
If you wish to run compiz or the like, keep in mind the hardware limit (2048x2048) of these cards.

This thread should be of interest.
http://ubuntuforums.org/showthread.php?t=301941
Again, keep in mind the Desktop manager Display settings, this was the key for me as the CCC didn't show the new modes.

Hope this helps.
VB

Albi

Member

Registered: 2007-07-05

Posts: 10

Re: Catalyst unable to set modes other than 2048x768 (dual monitor)

I managed to solve this by (re)moving the etc/ati/amdpcsdb and then going into the ati control panel again. However, vuboy is right about compiz; it doesn't work at 2560x1024, it just gives me garbage at the end of the second monitor and then crashes when I try to do anything 3D.

Will upgrading my card to a 9800pro ($20) fix this or no?

Last edited by Albi (2008-07-03 15:17:19)

vuboy

Member

From: Canada

Registered: 2008-03-04

Posts: 78

Re: Catalyst unable to set modes other than 2048x768 (dual monitor)

You can use a Vertical setup;-)
I'm running 1024x2048 with second monitor below.
Compiz works great!

VB