Since upgrading to Hippo, my Insignia Fire TV I use as a monitor doesn't come back after sleep even though my LG TV does. I have them as dual monitors extending desktop. Both are HDMI, though the Insignia uses a DVI converter since my video card only has one HDMI port.
Sometimes a reboot is enough to bring it back, sometimes I have to shut down and sometimes I have to pull the power plug (shut flipping the hard power switch isn't enough).
If there is a window on the screen that didn't wake up, I can turn the monitor off and Ubuntu will shift all of the windows to the visible screen, so the system's aware of the monitor on some level.
Output of xrandr:
thomas@bravos:~$ xrandr
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767
DVI-D-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
3840x2160 30.00*+ 59.94 50.00 29.97 25.00 23.98 23.98
4096x2160 59.94 50.00 29.97 25.00 24.00 23.98
1920x1080 119.88 100.00 60.00 59.94 50.00 29.97 25.00 23.98
1360x768 60.02
1280x1024 60.02
1280x720 59.94 50.00
1152x864 60.00
1024x768 60.00
800x600 60.32
720x576 50.00
720x480 59.94
640x480 59.95 59.94 59.93
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
As suggested by Second external monitor not waking up, tried unplugging the monitor, waiting and plugging back in. still nothing on xrandr.
Any ideas on something to try to force a re-detect?
