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Workaround xrandr bug: "cannot find crtc for output" #16

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Workaround xrandr bug: "cannot find crtc for output" #16

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7 changes: 7 additions & 0 deletions autorandr
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Original file line number Diff line number Diff line change
Expand Up @@ -164,6 +164,13 @@ config_equal() {
}

load_cfg_xrandr() {
# Disable all displays first. There is a bug in xrandr where trying to enable a different display
# when two displays are already attached gives the error "cannot find crtc for output" even
# when --off was passed to disable existing displays. If --off is called first as a separate
# command the crtcs are freed up for use.
# https://bugs.freedesktop.org/show_bug.cgi?id=22539
# https://bugs.freedesktop.org/show_bug.cgi?id=29929
$XRANDR | grep -P '(^[^ ]+) (dis)?connected' | sed -r 's/(^[^ ]+).*/--output \1 --off/' | xargs $XRANDR
sed 's!^!--!' "$1" | xargs $XRANDR
}

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