42 lines
943 B
Bash
Executable File
42 lines
943 B
Bash
Executable File
#!/bin/sh
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## This script will toggle HDMI Audio (and set video properly).
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## To do this automatically when the cable is plugged, add the following udev
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## rule (Linux only):
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## $ cat /etc/udev/rules.d/hdmi.rules
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## SUBSYSTEM=="drm", ACTION=="change", RUN+="/bin/sh /usr/local/bin/hdmi-switch"
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if [ $(id -u) -ne 0 ]; then
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echo "You must be root to run this script."
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exit
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fi
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HDMI_STATUS="$(cat /sys/class/drm/card0-HDMI-A-1/status)"
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ALSACONF="/etc/asound.conf"
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HDMICARD="$(aplay -l | awk '/HDMI/ {sub(/:/,"",$2); sub(/:/,"",$7); printf "card " $2 "\ndevice " $7 "\n"}')"
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[ -z "$HDMI_STATUS" ] && exit
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udevadm settle --quiet --timeout=16
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## Video
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for i in $(xrandr | awk '/^[[:alnum:]-]+ connected/ {print $1}'); do
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xrandr --output "$i" --auto
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done
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## Sound
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if [ "$HDMI_STATUS" = "connected" ]; then
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echo "pcm.!default {
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type hw
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$HDMICARD
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}" > "$ALSACONF"
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chmod 644 "${ALSACONF}"
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else
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rm -f "$ALSACONF"
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fi
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