I created https://gitlab.freedesktop.org/xorg/app/xrandr/issues/40 .
- Bug#906310: Need xrandr in two steps, else: vblank ... Dan Jacobson
- Bug#906310: notified xrandr source (7.7+8) 積丹尼 Dan Jacobson
- Bug#906310: actually vblank wait timed out on ... 積丹尼 Dan Jacobson
- Bug#906310: video=SVIDEO-1:d 積丹尼 Dan Jacobson
