On Tue, Oct 22, 2019 at 11:50 AM Böszörményi Zoltán <zboszor@xxxxx> wrote: > > Hi, > > I have the below configuration for an Intel based POS system that, > while advertises 3 outputs (DP1, VGA1 and HDMI1 with xf86-video-intel), > only two are usable. DP1 for the built-in touchscreen and VGA1 for > the external VGA connector. > > I wanted to use an USB DisplayLink device as the 3rd output, with all > three output using its own Screen number, i.e. :0.0 :0.1 and :0.2. > > [...] > > How can I set up 3 different Screens correctly for 3 separate fullscreen > applications? > > I am using Xorg 1.20.4 patched with the "autobind GPUs to the screen" > patch from Dave Airlie that at least wakes up the UDL device and makes > it visible without extra magic with providers/sinks. If it's being treated as a GPU, that's your first problem for this kind of setup. You should see modeset(2), in your logs, but I suspect you're seeing modeset(G0) (the "G" indicates "GPU"). > > # cat /etc/X11/xorg.conf.d/videocard.conf > Section "Monitor" > Identifier "Monitor-DP-1" > Option "AutoServerLayout" "on" > Option "Rotate" "normal" > EndSection > > Section "Monitor" > Identifier "Monitor-HDMI-1" > Option "AutoServerLayout" "on" > Option "Rotate" "normal" > EndSection > > Section "Monitor" > Identifier "Monitor-VGA-1" > Option "AutoServerLayout" "on" > Option "Rotate" "normal" > EndSection > > Section "Monitor" > Identifier "DVI-I-1-1" The others are Monitor-*, this one isn't. You probably want this to be DVI-I-1, as noted below. I guess you get the extra -1 from seeing it as a slaved GPU's output in your current configuration. > Option "AutoServerLayout" "on" > Option "Rotate" "normal" > EndSection > > Section "Device" > Identifier "Intel0" > Driver "modesetting" > Option "kmsdev" "/dev/dri/card1" > Screen 0 > Option "Monitor-DP1" "DP-1" > Option "ZaphodHeads" "DP-1" > EndSection > > Section "Device" > Identifier "Intel1" > Driver "modesetting" > Option "kmsdev" "/dev/dri/card1" > Screen 1 > Option "Monitor-VGA-1" "VGA-1" > Option "ZaphodHeads" "VGA-1" > EndSection > > # Intentionally not referenced in ServerLayout below > Section "Device" > Identifier "Intel2" > Driver "modesetting" > Option "kmsdev" "/dev/dri/card1" > Option "Monitor-HDMI-1" "HDMI-1" > Option "ZaphodHeads" "HDMI-1" > EndSection > > Section "Device" > Identifier "UDL" > Driver "modesetting" > Option "kmsdev" "/dev/dri/card0" > Screen 2 > Option "Monitor-DVI-I-1-1" "DVI-I-1-1" I think you have an extra -1 in here (and the monitor name doesn't exist as per above). And I think the "Screen" index is wrong -- it's not what one tends to think it is, as I recall. I think you can just drop these lines though. > EndSection > > Section "Screen" > Identifier "SCREEN" > Option "AutoServerLayout" "on" > Device "Intel0" > Monitor "Monitor-DP-1" > SubSection "Display" > Modes "1024x768" > Depth 24 > EndSubSection > EndSection > > Section "Screen" > Identifier "SCREEN1" > Option "AutoServerLayout" "on" > Device "Intel1" > Monitor "Monitor-VGA-1" > SubSection "Display" > Modes "1024x768" > Depth 24 > EndSubSection > EndSection > > Section "Screen" > Identifier "SCREEN2" > Option "AutoServerLayout" "on" > Device "UDL" > Monitor "Monitor-DVI-I-1-1" > SubSection "Display" > Modes "1024x768" > Depth 24 > EndSubSection > EndSection > > Section "ServerLayout" > Identifier "LAYOUT" > Option "AutoServerLayout" "on" > Screen 0 "SCREEN" > Screen 1 "SCREEN1" RightOf "SCREEN" > Screen 2 "SCREEN2" RightOf "SCREEN1" > EndSection > > Best regards, > Zoltán Böszörményi > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
