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[Bug 1308105]

 

OK: disabled `Mirror displays` option


GIT bisect points me to: 

>git bisect bad  (22224)
835671ad8db9bcaed4ec3d53753b7f9a8b4610a7 is the first bad commit
commit 835671ad8db9bcaed4ec3d53753b7f9a8b4610a7
Author: Sean Davis <smd.seandavis@xxxxxxxxx>
Date:   Sat Jan 31 11:31:52 2015 -0500

    Fix issues found with cppcheck (Thanks Mario) (Bug 10879)

:040000 040000 f3782b2eee70c04f7715a6aa10d8a2ab7b5b3d42 4cbdb493675c1f077dfb1da25cc087eae33f8e3d M	dialogs
:040000 040000 995180b85348189b33ae73a4b3a1bd4f2ba675a6 f5e0a19760ca4a33b5ae0e681da7ee0976f5935e M	xfsettingsd
>git bisect bad (22224) returned '0'

There was some unexpected impact of this clean-up...

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https://bugs.launchpad.net/bugs/1308105

Title:
  Xfce resets TV mode to NULL when power cycled

Status in Mythbuntu, Ubuntu derivative focused upon MythTV:
  Confirmed
Status in xfce4-settings:
  In Progress
Status in nvidia-graphics-drivers package in Ubuntu:
  Invalid
Status in nvidia-graphics-drivers-331 package in Ubuntu:
  Invalid
Status in xfce4-settings package in Ubuntu:
  Confirmed

Bug description:
  I had an HTPC with Mythbuntu 12.04 installed.  Upon upgrading a new
  behavior that if the TV is power cycled it no longer detects a link
  with the HTPC.

  When this happens I can find in the xorg log that there is an
  accompanying log item:

  [ 39829.509] (II) NVIDIA(0): Setting mode "NULL"

  After debugging with NVIDIA at
  https://devtalk.nvidia.com/default/topic/729955/linux/tv-stops-being-
  detected/ we've deteremined it's a X client that reacts to the RANDR
  events causing the mode to be set to NULL.

  Working through the list in an Xfce environment, the culprit is
  xfsettingsd.  If xfsettingsd is running, it causes the TV to come up
  in a NULL mode.  If it's killed, it remains in the mode it was
  previously running in.

  
  Until this is fixed, this behavior can be worked around with a simple shell script:
  ==============================
  #!/bin/sh
  #Fix TV state when HDMI link is lost.
  #By Mario Limonciello <superm1@xxxxxxxxxx>

  OUTPUT="HDMI-0"
  BAD_MODE="1280x720"
  GOOD_MODE="1920x1080"

  for MODE in $BAD_MODE $GOOD_MODE; do
   DISPLAY=:0 xrandr --output $OUTPUT --mode $MODE
   sleep 2
  done
  ==============================

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