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[Theo Linkspfeifer <1615286@xxxxxxxxxxxxxxxxxx>]

** Changed in: xfce4-settings (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1615286

Title:
  xfce - screen turns black after power off/power on

Status in Linux Mint:
  New
Status in xfce4-settings:
  New
Status in xfce4-settings package in Ubuntu:
  Fix Released
Status in xfce4-settings source package in Xenial:
  New
Status in xfce4-settings source package in Bionic:
  Fix Released

Bug description:
  Just installed Linux Mint 18 with XFCE (reformatted the partition, but
  recopied some files from ~/.config); previously using Linux Mint 17
  with KDE and no related issues. I am using mdm. I have an i3 with
  Intel HD Graphics 4400, and a standard LCD monitor connected via HDMI
  to my desktop PC.

  If I turn my display off, due to any of the following:

  - Configuring "Blank after X minutes" in Power Manager and waiting for X minutes;
  - Physically pressing the "power off" button on my monitor;
  - Suspending and then resuming my session;

  Then, when turning the screen back on, it does not work anymore:
  everything is black, and after a few seconds the monitor reports "no
  signal".

  Keyboard and mouse still work, I can toggle the Num lock light on the
  keyboard, for instance, and switch via Ctrl+Alt+F1 to a terminal. If I
  do so and run "xrand -d :0.0 --auto" (as recommended in one forum for
  an user having similar issues), I get "xrandr: Configure crtc 0
  failed". If I try the exact same command before turning the screen off
  (also using a Ctrl+Alt+F1 terminal, for instance), I get no message,
  but because the screen is already on, nothing happens.

  I tried looking at dmesg and /var/log/syslog to find relevant error
  messages, but nothing seems immediate to me. I can try using other
  display managers or anything else that can help debug the issue.

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