Hi,

I got a new monitor last year, which might be an older and unusal one,
but that's still not giving me any clue. All monitors are connected via
DisplayPort and react normally, until the following happens.

Repro:

- turn the monitors OFF overnight (powercycle!)
- the PC is put into suspend-to-ram state

Situation after the wakeup:

- kernel has thrown some errors (see below), but not always, sometimes
  it's silent yet the malfunction happens
- the X11 session still acts like the the second monitor is connected, I
  can move my mouse cursor and windows over there (blindly)
- in fact, the second monitor reports NO SIGNAL and goes into stand-by mode
- the xrandr output shows some PHANTOM DisplayPort outputs now, where
  the Screen seems to be "connected". Not the same output as before! And
  there are no physical interfaces on the gfx card which would fit the
  shown configuration.

All that is not cool, please fix. Needless to say that Windows drivers
just work.

Best regards,
Eduard.