[Bug 99103] Same output (DisplayPort) is used in multi-head configuration for different Devices/Displays

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99103

--- Comment #7 from Stefan.LAUTERWASSER at thalesgroup.com ---
Created attachment 132133
  --> https://bugs.freedesktop.org/attachment.cgi?id=132133&action=edit
working multi-head configuration with 8 monitors

I am not sure, but I think these entry fixed the issue more or less:

Section "Device"
    Option          "ZaphodHeads" "DisplayPort-X"
EndSection

Also new entries are:

Section "Module"
    Load            "dri"
    Load            "extmod"
EndSection

Section "DRI"
    Mode            0666
EndSection

Section "Device"
    Option          "AccelMethod" "glamor"
    Option          "DRI3" "True"
    Option          "TearFree" "True"
EndSection

I also have to enable the the monitors manually via xrandr after x start-up -
don't know why:

DISPLAY=:0.4 xrandr --output DisplayPort-1-4 --auto
DISPLAY=:0.5 xrandr --output DisplayPort-1-5 --auto
DISPLAY=:0.6 xrandr --output DisplayPort-1-6 --auto
DISPLAY=:0.7 xrandr --output DisplayPort-1-7 --auto

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