mythbuntu-bugs team mailing list archive

[JeanLuke <1308105@xxxxxxxxxxxxxxxxxx>]

I added the options:
       Option "ConnectedMonitor" "DFP-0"
       Option "UseDisplayDevice" "DFP-0"
to the "devices" section of my /etc/X11/xorg.conf and it seems to have fixed it - even with the current xfce4-settings installed.

Tests I have done:
1/ boot with the television off, turn it on and get display
2/ boot with the television on, power cycle it (off time about 30 minutes) and have display
3/ boot with the television off, switch it on for 5 minutes, off for 30 minutes, back on and have display

As above, I have the Asus M3N78 motherboard (Nvidia 8200 onboard
graphics) with nvidia-304-updates driver, using HDMI.

-- 
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, Ubuntu derivative focused upon MythTV:
  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