mythbuntu-bugs team mailing list archive

[Brax <luc1982@xxxxxxxxx>]

The patch by philmanjaro works for me too by following instructions by
Alexandre ACEBEDO (aacebedo) from 2016-01-25, on a braswell system
(N3150 - Zbox CI323)

One thing though, I still have an issue if the TV is turned off when the
PC is booted initially, xrandr will give me the proper info and tell me
the screen is connected once I power it on, but xfce will still show it
as Disabled (by connecting with x11vnc), I'm not sure if it's related or
not

xrandr -auto sometimes fixes it but not always I sometimes have to
reboot the system with the TV powered on for it to start working again

-- 
You received this bug notification because you are a member of Mythbuntu
Bug Team, which is subscribed to Mythbuntu.
https://bugs.launchpad.net/bugs/1308105

Title:
  Xfce resets TV mode to NULL when power cycled

Status in Mythbuntu:
  Confirmed
Status in xfce4-settings:
  Confirmed
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
  ==============================

To manage notifications about this bug go to:
https://bugs.launchpad.net/mythbuntu/+bug/1308105/+subscriptions