*** This bug is a duplicate of bug 1308105 ***
https://bugs.launchpad.net/bugs/1308105
I've the same issue on Ubuntu 16.04 with Intel Skylake. PC connected to
the TV, we switch between the computer and TV regularly. Found I was
able to get the screen to start using xrandr as suggested above.
To get the screen to start when the TV switched to the PC HDMI/DP
sudo nano /etc/udev/rules.d/95-monitor-hotplug.rules
SUBSYSTEM=="drm", RUN+="/usr/local/bin/fix_tv_state.sh
sudo nano /usr/local/bin/fix_tv_state.sh
Add the following:
###########################################
#!/bin/sh
#Fix TV state when HDMI link is lost.
#By Mario Limonciello <email address hidden>
export XAUTHORITY=/home/username/.Xauthority
OUTPUT="DP2"
BAD_MODE="1280x720"
GOOD_MODE="1920x1080"
for MODE in $BAD_MODE $GOOD_MODE; do
sleep 2
DISPLAY=:0 xrandr --output $OUTPUT --mode $MODE
sleep 2
done
#################################
Note replace username with your username. Change the output to whatever
you have e.g. HDMI2
sudo chmod +x /usr/local/bin/fix_tv_state.sh
sudo udevadm control --reload-rules
Change from HDMI back to TV, then back again. Screen comes on after a
couple of seconds. Change the sleep times to suit.
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https://bugs.launchpad.net/bugs/1575123
Title:
[Xubuntu 16.04] Display stays black if monitor is turned off/on
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