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Automatically set a sensible resolution for the guest VM. Closes #1

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Introspect connected monitors to determine a sane default resolution for the guest VM based on the lowest resolution of all connected monitors.
This commit is contained in:
Martin Wimpress 2020-03-19 01:45:38 +00:00
parent bcae15019d
commit 68a1f9cc20
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GPG key ID: 61DF940515E06DA3
1 changed files with 33 additions and 11 deletions
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44
quickemu.sh
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@ -20,16 +20,6 @@ else
fi
disk="64G"
xres="1440"
yres="900"
ver=$(qemu-system-x86_64 -version | head -n1 | cut -d' ' -f4 | cut -d'(' -f1)
if [ "${ver}" == "2.11.1" ]; then
display="-display sdl"
# Fix stuttering mouse pointer when SDL backend is used.
export SDL_VIDEO_X11_DGAMOUSE=0
else
display="-display gtk,grab-on-hover=on,zoom-to-fit=off"
fi
function vm_delete() {
if [ -f "${disk_img}" ]; then
@ -69,6 +59,38 @@ function vm_boot() {
iso=""
fi
# Determine what display to use
ver=$(qemu-${ENGINE} -version | head -n1 | cut -d' ' -f4 | cut -d'(' -f1)
if [ "${ENGINE}" == "virgil" ]; then
display="-display sdl,gl=on"
elif [ "${ver}" == "2.11.1" ]; then
display="-display sdl"
# Fix stuttering mouse pointer when SDL backend is used.
export SDL_VIDEO_X11_DGAMOUSE=0
else
display="-display gtk,grab-on-hover=on"
fi
# Determine the most suitable 16:9 resolution of for VM based
# on the lowest resolution connected monitor.
LOWEST_WIDTH=$(xrandr --listmonitors | grep -v Monitors | cut -d' ' -f4 | cut -d'/' -f1 | sort | head -n1)
if [ ${LOWEST_WIDTH} -ge 3840 ]; then
xres=3200
yres=1800
elif [ ${LOWEST_WIDTH} -ge 2560 ]; then
xres=2048
yres=1152
elif [ ${LOWEST_WIDTH} -ge 1920 ]; then
xres=1664
yres=936
elif [ ${LOWEST_WIDTH} -ge 1280 ]; then
xres=1152
yres=648
else
xres=800
yres=600
fi
if [ ${ENABLE_EFI} -eq 1 ]; then
if [ "${ENGINE}" == "virgil" ]; then
BIOS="-bios /snap/qemu-virgil/current/usr/share/qemu/OVMF.fd"
@ -110,7 +132,7 @@ function vm_boot() {
-object rng-random,id=rng0,filename=/dev/urandom \
-device virtio-rng-pci,rng=rng0 \
-device qemu-xhci \
-device virtio-vga,virgl=on,edid=on,xres=${xres},yres=${yres} \
-device virtio-vga,virgl=on,xres=${xres},yres=${yres} \
${display} \
"$@"
}