Multiple screens with recent Intel card - no luck

[Adam Cecile]

Hello,


I'm trying to switch from Nvidia to Intel and I have no issue how to 
create multiple screens for each display port connector, it used to work 
just fine with Nvidia card but it uses some specific Nvidia parameters...

What I'm trying to achieve is to be able to start application using 
DISPLAY=:0.0 or :0.1 or :0.2...

I came up with the following configuration that does not work (DP-3 is 
disconnected at the moment, this is "normal", 3 monitors opened but it 
looks like they are all attached to the same screen).

I see some suspicious things:

* modeset(0): Output DP-1 using monitor section Cube26 but others say 
Output DP-{2,3,4} has no monitor section

* I'm not sure what is this modeset driver, I tried to force modsetting 
but it says no such driver exists

Does this means "ZaphodHeads" option is not working and I end up having 
only one single device ? What else could I do ?


Thanks in advance,

Regards


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Section "Device"
    Identifier     "Intel-ARC-DP-1"
    #Driver         "modsetting"
    BusID          "PCI:5:0:0"
    Option	   "ZaphodHeads" "DP-1"
    Option	   "Monitor-DP-1" "Cube26"
    #Option	   "Monitor-DP-2" "Cube27"
    #Option	   "Monitor-DP-2" "Cube28"
    #Option	   "Monitor-DP-4" "Cube29"
    Screen	   0
EndSection

Section "Device"
    Identifier     "Intel-ARC-DP-2"
    #Driver         "modsetting"
    BusID          "PCI:5:0:0"
    Option	   "ZaphodHeads" "DP-2"
    Option	   "Monitor-DP-2" "Cube26"
    Screen	   1
EndSection

Section "Device"
    Identifier     "Intel-ARC-DP-3"
    #Driver         "modsetting"
    BusID          "PCI:5:0:0"
    Option	   "ZaphodHeads" "DP-3"
    Option	   "Monitor-DP-3" "Cube28"
    Screen	   2
EndSection

Section "Device"
    Identifier     "Intel-ARC-DP-4"
    #Driver         "modsetting"
    BusID          "PCI:5:0:0"
    Option	   "ZaphodHeads" "DP-4"
    Option	   "Monitor-DP-3" "Cube29"
    Screen	   3
EndSection

Section "Monitor"
    Identifier     "Cube26"
EndSection

Section "Monitor"
    Identifier     "Cube27"
EndSection

Section "Monitor"
    Identifier     "Cube28"
EndSection

Section "Monitor"
    Identifier     "Cube29"
EndSection

Section "Screen"
    Identifier	"Cube26"
    Device	"Intel-ARC-DP-1"
    Monitor	"Cube26"
EndSection

Section "Screen"
    Identifier	"Cube27"
    Device	"Intel-ARC-DP-2"
    Monitor	"Cube27"
EndSection

Section "Screen"
    Identifier	"Cube28"
    Device	"Intel-ARC-DP-3"
    Monitor	"Cube28"
EndSection

Section "Screen"
    Identifier	"Cube29"
    Device	"Intel-ARC-DP-4"
    Monitor	"Cube29"
EndSection

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Cube26" 0 0
    Screen      1  "Cube27" RightOf "Cube26" 
    Screen      2  "Cube28" RightOf "Cube27" 
    Screen      3  "Cube29" RightOf "Cube28" 
    Option         "Xinerama" "off"
    Option	   "Clone" "off"
EndSection
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