[Bug 61642] LVDS doesn't come back after "xrandr --output LVDS1 --off; xrandr --output LVDS1 --auto"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61642

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
Actually doesn't seem to be a kernel bug at all:

LVDS --off: no setcrtc to disable the LVDS, just backlight is turned off
LVDS --auto: setcrtc is called, but is a no-op
LVDS --mode 1024x768: reconfiguration detected, modeset performed

userspace *should* be disabling the output rather than turning it off, but the
second failure looks like userspace is then assuming that it gets turned back
on by auto.

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