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#1 2009-08-22 11:24:00

connexion2000
Member
Registered: 2006-10-15
Posts: 116

[SOLVED] Dual screen ATI hell

Hi,
I have radeon hd 4850 and I connected tv using hdmi. I am trying to configure it now, but I have some problems. Using catalyst, everything with HDMI audio works properly, but of course catalyst drivers are to shitty to work nicely and they hang my system.

With radeonhd I am able to run external tv in desired mode and desired resolution but unfortunaletly withou Audio HDMI.

With xf86-video-radeon it is worst, but I would like to use them because they are under fastest development. I can only fire one monitor at once, I can't get working them both. Using xrandr also doesn't help because second display simply doesn't fire up (it is detected by xrandr).
Here is my xorg.conf:

Section "ServerLayout"
    Identifier    "DefaulLayout"
    Screen        "DefaultScreen"
EndSection


Section "Files"
    FontPath    "/usr/share/fonts/misc"
    FontPath    "/usr/share/fonts/TTF"
    FontPath    "/usr/share/fonts/Type1"
EndSection


Section "Module"
EndSection


Section "ServerFlags"
    Option        "Xinerama" "off"
EndSection


Section "Monitor"
    Identifier    "DVI1"
    Option        "DPMS" "true"
    Option        "PreferredMode" "1680x1050"
EndSection


Section "Monitor"
    Identifier    "DVI2"
EndSection


Section "Device"
    Identifier    "Radeon HD4850"
    Driver        "radeon"
    Option        "DVI-1" "DVI1"
    Option        "DVI-0" "DVI0"
    Option        "DRI" "true"
    Option        "AccelMethod" "EXA"
EndSection


Section "Screen"
    Identifier    "DefaultScreen"
    Device        "Radeon HD4850"
    Monitor        "DVI0"
    DefaultDepth     24
    SubSection "Display"
        Viewport   0 0
        Virtual   3600 3600
        Depth     24
    EndSubSection
EndSection

xrandr output:

Screen 0: minimum 320 x 200, current 2560 x 1050, maximum 3600 x 3600
DVI-1 connected 1280x720+1280+56 (normal left inverted right x axis y axis) 698mm x 392mm
   1280x720       50.0*+   60.0
DVI-0 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 473mm x 296mm
   1680x1050      60.0*+   59.9
   1280x1024      60.0
   1440x900       59.9
   1280x800       59.9
   1024x768       60.0
   800x600        60.3     56.2
   640x480        59.9
   720x400        70.1

Please help.

Last edited by connexion2000 (2009-08-23 11:12:23)

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#2 2009-08-22 13:19:06

Andrwe
Member
From: Leipzig/Germany
Registered: 2009-06-17
Posts: 322
Website

Re: [SOLVED] Dual screen ATI hell

Why do you have the monitor sections in your xorg.conf?
Also without xinerama it will be very difficult handling both monitors.

So I'm recommanding to comment both monitor section and the serverflag option xinerama, this means also commenting related options like "DVI-1", "DVI-0" of "Device" and "Monitor" of  "Screen".
Then use radeonhd as driver means xf86-video-radeonhd.

Please try this changes and if it doesn't work give a pastebin or something like this of your Xorg log.

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#3 2009-08-23 11:12:06

connexion2000
Member
Registered: 2006-10-15
Posts: 116

Re: [SOLVED] Dual screen ATI hell

Thanks for reply.

I installed xf86-video-radeonhd-git. It solves all problems. I can use audio over hdmi. I also leave 2 monitor sections, because I can deactivate 2nd DVI so X fires only on my monitor, if I want I activate 2nd hdmi using xrandr. I don't want to use xinerama, because I not very often use 2 monitors. Deleting monitor sections causes resolution issues and also very small fonts.

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#4 2009-08-23 11:17:07

Andrwe
Member
From: Leipzig/Germany
Registered: 2009-06-17
Posts: 322
Website

Re: [SOLVED] Dual screen ATI hell

k, nice to hear.

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