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partial answer: What you need is an image-viewer program that can display an image without grabbing the keyboard focus. Then you can either kill it and re-run it. (start it in the background, and $! will be the PID). Or it can read a list of files to display from a pipe, or better, commands like "display this file now" from a pipe, you could have a ...


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yes, outside X-server, in tty, try command: cat /dev/urandom >/dev/fb0 if colourfull pixels fills the screen, then your setup is ok, and you can try playing with this small script: #!/usr/bin/env bash fbdev=/dev/fb0 ; width=1280 ; bpp=4 color="\x00\x00\xFF\x00" #red colored function pixel() { xx=$1 ; yy=$2 printf "$color" | dd bs=$bpp ...


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Finally I got it working for both screens. I didnt read the xorg log carefully enough. Noveau was being loaded along with nvidia and intel drivers. And it might be that the priority for noveau was higher. I did a complete uninstall of noveau and didnt install any driver apart form nvidia-340. That makes ubuntu graphics stable. sudo apt-get purge ...


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Hi unfortunately in linux you can only use one driver at a time, as its loaded from the kernel (when using kms) and loaded using modules compiled for the running kernel. I see you trying to load both Intel and NVIDIA(nouveau) drivers at the same time. which will not work. For the two displays to work at the same time you have to use either vesa or fbdev ...



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