[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 #3 from Carl Worth <cworth at cworth.org> ---
(In reply to comment #1)
> Just to confirm, is the external monitor required to reproduce this? (FWIW I
> can't reproduce this on an x220T with/without an external monitor.)

I hadn't tested this previously, but apparently yes.

I just verified that I could not reproduce the bug without the
external monitor, but then immediately after adding the monitor (via
DisplayPort) the same commands showed the bug.

> It smells a bit like a kernel issue to me. Please provide a dmesg with
> drm.debug=0xe module parameter, preferably running the 3.8 kernel,
> exhibiting the xrandr --off, --auto, --mode, --auto sequence.

I'll follow up with that output shortly.

Thanks,

-Carl

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