Comment 11 for bug 1574777

Because Stephen mentioned on the mailing list that it could depend on the
cable, I bought a second one, but no luck with that either.

1. sorry, the M10 is my only tablet/phone with hdmi

2. tablet+cables work on my LCD-TV. It seems my tv also wants a refresh rate of 0,60Hz

[2016-05-10 22:53:54.491656] mirserver: New display configuration:
[2016-05-10 22:53:54.500558] mirserver: 0.1: LVDS 10,0" 135x216mm
[2016-05-10 22:53:54.500700] mirserver: Current mode 1200x1920 57,07Hz
[2016-05-10 22:53:54.500730] mirserver: Preferred mode 1200x1920 57,07Hz
[2016-05-10 22:53:54.500753] mirserver: Logical position +0+0
[2016-05-10 22:53:54.510085] mirserver: 0.2: DisplayPort 9,2" 203x114mm
[2016-05-10 22:53:54.510203] mirserver: Current mode 1920x1080 0,60Hz
[2016-05-10 22:53:54.510259] mirserver: Preferred mode 1920x1080 0,60Hz
[2016-05-10 22:53:54.510330] mirserver: Logical position +1200+0
[2016-05-10 22:53:54.510371] mirserver: 0.3: unused LVDS
[2016-05-10 22:54:49.797556] mirserver: New display configuration:
[2016-05-10 22:54:49.832026] mirserver: 0.1: LVDS 10,0" 135x216mm
[2016-05-10 22:54:49.841870] mirserver: Current mode 1200x1920 57,07Hz
[2016-05-10 22:54:49.844096] mirserver: Preferred mode 1200x1920 57,07Hz
[2016-05-10 22:54:49.846243] mirserver: Logical position +0+0
[2016-05-10 22:54:49.849306] mirserver: 0.2: unused DisplayPort
[2016-05-10 22:54:49.850798] mirserver: 0.3: unused LVDS

3. M10's screen changes to the grey virtual touchpad immediately, after a few seconds the OSD of the monitor shows that there is something on hdmi, the backlights go on, but only black pixels.

In the attach unity8.log:
I made a "service lightdm restart", plugged in the tv , saw the desktop on the tv-screen, unplugged the tv, plugged in the monitor, waited a few 30 seconds, unplugged the monitor.