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Save 8bitbuddhist/7ab180286d6eb7fdc68d374063814175 to your computer and use it in GitHub Desktop.
#!/bin/bash | |
# Make sure your Android device is plugged in and accessible over adb. | |
#### Remember to enable virtual displays in xorg by adding the following to your configuration (e.g. /usr/share/X11/xorg.conf.d/20-virtual.conf) | |
# Section "Device" | |
# Identifier "intelgpu0" | |
# Driver "intel" | |
# Option "VirtualHeads" "1" | |
#EndSection | |
#### If you use AMD or Nvidia, change the Identifier and Driver options to match your GPU. | |
W=1920 # Virtual display width | |
H=1080 # Virtual display height | |
O=VIRTUAL1 # The name of the virtual display (check using xrandr) | |
P=eDP1 # The name of your physical display (check using xrandr) | |
PW='$(xrandr --current | grep \* | awk '{print $1;}' | cut -d x -f 1)' | |
# Create the virtual display | |
gtf $W $H 60 | sed '3q;d' | sed 's/Modeline//g' | xargs xrandr --newmode | |
gtf $W $H 60 | sed '3q;d' | sed 's/Modeline//g' | awk '{print $1;}' | sed 's/^.\(.*\).$/\1/' | xargs xrandr --addmode $O | |
gtf $W $H 60 | sed '3q;d' | sed 's/Modeline//g' | awk '{print $1;}' | sed 's/^.\(.*\).$/\1/' | xargs xrandr --output $O --right-of $P --mode | |
# Forward the VNC port to your device and start a VNC session | |
adb reverse tcp:5900 tcp:5900 | |
x11vnc -localhost -clip ${W}x${H}+${PW}+0 | |
# When the session ends, turn off the virtual display | |
xrandr --output $O --off |
Update: The presence of /usr/share/X11/xorg.conf.d/20-virtual.conf
seems a problem on Debian MATE. Even after a fresh boot, without running the script, without touching the Displays control panel, I had funny video freeze ups.
I moved it aside and rebooted. Using my computer again, and things seem rock-solid again.
The Displays control panel is a nice little beast for managing multiple screens. It would be nice to have my tablet-as-monitor integrate with it…
Hi all, it's been a while since I've tested this since I haven't had a need for a portable monitor. I'll give @cb1986ster's script a try and see about finally updating the Gist
NVidia driver doesn't support virtual screens. And, mentioned "intel" driver is legacy one, current intel's "modesetting" driver doesn't support virtual screens too. Please, read the following materials for possible solutions: StackExchange: Unable to add a VIRTUAL display to Xorg ArchLinux Wiki: Extreme Multihead
Thanks, this documentation is clear. My driver is amdgpu
for this reason I used the modeline alternative. I did a simple a script for old laptops (secondary display). Also I fixed some issues on the resolution detection on the current script:
https://gist.github.com/hpsaturn/7b6d15f149eb5bb9bdb19b94b1b34c42
Also it should be works with Android.
Thanks to @cb1986ster, your script works for me. But not perfectly…
This I think I did wrong. When I maximize a window on the new it gets set too big. What is the correct way to scale my display?
My second problem is that
rmmod
is failing, it saysevdi is in use
. I think my MATE graphic UI environment is noticing and grabbing. The new virtual monitor shows up in Control Center->Displays, and it stays there once the Android display has gone away (as best as I know how to make it go away).