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[Chris Deliz <chris.deliz@xxxxxxxxx>]

I'm working on a Panasonic Toughbook CF-C1 that also has this issue,
though I can only rotate the display manually on this model (not sure by
other thinkpad comments if it is implying an automatic screen rotation,
perhaps by gyroscope, so I wanted to be sure to make the distinction
just in case).  Rotating it to normal, clockwise, counterclockwise gives
no issue, 180 flip causes same black screen problem. Ctrl+Alt+F1
followed by Ctrl+Alt+F7 does fix this for me, though I'll note that
switching back to Normal rotation after being on 180 rotation will cause
the same black screen problem again, warranting another Ctrl+Alt+...
etc. to return it to normal.

Using Ubuntu 14.04 on a 64-bit system.

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https://bugs.launchpad.net/bugs/1451798

Title:
  black screen (but with cursor) after rotating by 180 degrees

Status in x11-xserver-utils package in Ubuntu:
  Confirmed

Bug description:
  I use `xrandr --output LVDS1 --rotate inverted` to rotate the contents
  of my screen by 180 degrees as part of my thinkpad-scripts. This has
  worked well until Kubuntu 14.10. Now it still works when I have an
  external screen (DP2) attached.

  I just tried it out now without an external screen attached. The
  screen turns black, but I can still see the mouse cursor. The cursor
  also changes according to the program that it is on, one just does not
  see the program. I can also click and it will have some effect.

  To see the screen again, I do [Ctrl][Alt][F1] and then
  [Ctrl][Alt][F7]. Somebody else has the same ThinkPad X220 with Ubuntu
  (not sure the version, though) but uses Unity. He has the exact same
  problem, so this is not bound to KDE or Unity, but fundamental to
  something that `xrandr` does.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: x11-xserver-utils 7.7+2ubuntu2
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Tue May  5 13:48:54 2015
  InstallationDate: Installed on 2014-10-07 (209 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
  SourcePackage: x11-xserver-utils
  UpgradeStatus: Upgraded to vivid on 2015-04-29 (5 days ago)

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