mythbuntu-bugs team mailing list archive

[Alexander Schmidt <voidcastr@xxxxxxxxx>]

I'm afraid but Sean's patch, "fix_for_bug11107.patch", does not fix the
issue for me. I tried with both git-master
(d532c0f06d4a629aebf11e8bead63617931001d2) and tag 4.11.2
(e329018189663837f2cd9c50807e4376a852cc88). My patch in turn still works
with both said commits.

However, since my patch only addresses the issue's symptoms but not its
actual cause, Sean's patch should be further improved instead of just
using mine.

It's interesting to see that "fix_for_bug11107.patch" already fixes the
problem for Raj, which makes me think that there's more to this issue
than we understand thus far.

Btw, I tried both enabling and disabling the "Configure new displays
when connected" feature but that did not have any effect. I'm out of
ideas right now.

My configuration:
Xubuntu 14.04 x64
Kernel 3.13.0-39-generic
Intel Core i5-4590S
Intel driver 2.99.911-0intel1
Monitor attached with a HDMI-to-HDMI cable

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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:
  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
  ==============================

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