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Message #10998
[Bug 1308105] Re: Xfce resets TV mode to NULL when power cycled
Unfortunately, the version in 16.04 was not patched.
The bug is fixed in 18.04 which installs xfce4-settings 4.12.4.
** Changed in: xfce4-settings (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1308105
Title:
Xfce resets TV mode to NULL when power cycled
Status in Mythbuntu:
Confirmed
Status in xfce4-settings:
Fix Released
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:
Fix Released
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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