Yet another radeonhd dualhead thread

[conholster]

Hi,

having some problems setting up dualhead with radeonhd.

ATI Radeon HD3850 PCI-E

24" LG Flatron 1920x1200 <-- main monitor
20" Samsung SM206BW <-- extended

Kernel 2.6.30rc4 from here
xserver-xorg-video-radeonhd 1.2.5+git from here

Kubuntu 9.04

xorg.conf

Section "Monitor"
        Identifier      "Flatron"
        ModeLine        "1920x1200" 154.0 1920  1968  2000 2080 1200 1203 1209 1235
        Option          "PreferredMode" "1920x1200"
        Option          "DPMS"
        #Option         "RightOf" "Samsung"
        DisplaySize     508 317 #dpi 96
EndSection

Section "Monitor"
        Identifier      "Samsung"
        ModeLine        "1680x1050" 119.0 1680 1728 1760 1840 1050 1053 1059 1080
        Option          "PreferredMode" "1680x1050"
        Option          "DPMS"
        Option          "RightOf" "Flatron"
        DisplaySize     444 277 #dpi 96
EndSection

Section "Device"
        Identifier      "ATI Radeon HD3850"
        Driver          "radeonhd"
        Option          "AccelMethod" "exa"
        Option          "DRI" "on"
        Option          "Monitor-DVI-0" "Flatron"
        Option          "Monitor-HDMI-0"  "Samsung"
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Monitor         "Flatron"
        #Monitor                "Samsung"
        Device          "ATI Radeon HD3850"
        SubSection "Display"
                Depth 24
                Virtual 3600 1200
        EndSubSection
EndSection

Section "ServerFlags"
        Option  "DontZap"       "True"
EndSection

Output from xrandr

Screen 0: minimum 320 x 200, current 3600 x 1200, maximum 3600 x 1200
DVI-I_1/digital connected 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm
   1920x1200      60.0*+
   1600x1200      60.0     59.9
   1680x1050      59.9
   1280x1024      74.9     75.0     59.9
   1280x960       74.9
   1024x768       75.1     60.0
   800x600        75.0     60.3
   640x480        75.0     60.0
   720x400        70.1
DVI-I_1/analog disconnected (normal left inverted right x axis y axis)
TV_7PIN_DIN disconnected (normal left inverted right x axis y axis)
DVI-I_2/digital connected 1680x1050+1920+0 (normal left inverted right x axis y axis) 433mm x 271mm
   1680x1050      59.9*+
   1280x1024      75.0     59.9
   1280x960       59.9
   1152x864       75.0     74.9
   1024x768       75.1     70.1     60.0
   832x624        74.6
   800x600        72.2     75.0     60.3     56.2
   640x480        75.0     72.8     66.7     60.0
   720x400        70.1
DVI-I_2/analog disconnected (normal left inverted right x axis y axis)

When I bootup both monitors have 1680x1050 resolution and monitors are in clone mode (both show same picture) but when I run the commands

xrandr --output DVI-I_1/digital --left-of DVI-I_2/digital
xrandr --output DVI-I_1/digital --mode 1920x1200
xrandr --output DVI-I_1/digital --left-of DVI-I_2/digital

dualhead works... What do I add to xorg.conf so I dont have to run commands everytime I login?

[signor_rossi]

Since you use Kubuntu look for a file named 'Xsetup' related to kdm ('locate Xsetup' in konsole). On Arch it is under '/usr/share/config/kdm/Xsetup', you put the xrandr commands in there (don't forget the '&' at the end of each command). But since you use Kubuntu there is a possibility that this is done completely different, you might double check on the Ubuntu forums first.

SignorRossi.

[Blue Beard]

Your "Monitor-xxx" options don't use the outputs listed by xrandr.

For example: Option "Monitor-DVI-I_1/digital" "Flatron"

[conholster]

Thanks for the help guys! Both suggestions worked