60 lines
2.2 KiB
Bash
60 lines
2.2 KiB
Bash
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#!/bin/bash
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# Steps:
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# 1) Make sure bash is available
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# 2) Create udev rule
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# - path to new udev rule: /etc/udev/rules.d/50-x-resize.rules
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# - udev rule content:
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# ACTION=="change",KERNEL=="card0", SUBSYSTEM=="drm", RUN+="/usr/local/bin/x-resize"
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# 3) Create /var/log/autores directory
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# 4) Create script /usr/local/bin/x-resize (this file) and make executable
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# 5) Reload udev rules with `sudo udevadm control --reload-rules`
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# 6) Make sure auto-resize is enabled in virt-viewer/spicy
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# 7) Make sure qemu-guest-agent spice-vdagent xserver-xspice xserver-xorg-video-qxl are installed
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# 8) Make sure spice-vdagentd is loaded and running fine
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# Debugging:
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# - Watch udev events on resize with `udevadm monitor`
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# - Watch dmesg (may not be super useful) with `dmesg -w`
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# - Watch autores logs with `tail -f /var/log/autores/autores.log`
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# Credits:
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# - Credit for Finding Sessions as Root: https://unix.stackexchange.com/questions/117083/how-to-get-the-list-of-all-active-x-sessions-and-owners-of-them
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# - Credit for Resizing via udev: https://superuser.com/questions/1183834/no-auto-resize-with-spice-and-virt-manager
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## Ensure Log Directory Exists
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LOG_DIR=/var/log/autores;
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if [ ! -d $LOG_DIR ]; then
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mkdir $LOG_DIR;
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fi
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LOG_FILE=${LOG_DIR}/autores.log
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## Function to find User Sessions & Resize their display
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function x_resize() {
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declare -A disps usrs
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usrs=()
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disps=()
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for i in $(users);do
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[[ $i = root ]] && continue # skip root
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usrs[$i]=1
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done
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for u in "${!usrs[@]}"; do
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for i in $(sudo ps e -u "$u" | sed -rn 's/.* DISPLAY=(:[0-9]*).*/\1/p');do
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disps[$i]=$u
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done
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done
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for d in "${!disps[@]}";do
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session_user="${disps[$d]}"
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session_display="$d"
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session_output=$(sudo -u "$session_user" PATH=/usr/bin DISPLAY="$session_display" xrandr | awk '/ connected/{print $1; exit; }')
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echo "Session User: $session_user" | tee -a $LOG_FILE;
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echo "Session Display: $session_display" | tee -a $LOG_FILE;
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echo "Session Output: $session_output" | tee -a $LOG_FILE;
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sudo -u "$session_user" PATH=/usr/bin DISPLAY="$session_display" xrandr --output "$session_output" --auto | tee -a $LOG_FILE;
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done
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}
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echo "Resize Event: $(date)" | tee -a $LOG_FILE
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x_resize
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