It happens with a Vostro 3550, Debian, Gnome and a Philips 1080p television.As soon as I connect the HDMI it starts toggling output and goes from mirror to just the laptop display to just the TV to conjugated at intervals of 15 seconds to 5 minutes.The Fn + F1 command and the display tab change it, only for it to continue happening.I should also mention that the TV shifts from 1080p and a more contrasted image with less quality throughout this toggling.xrandr>Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192LVDS1 connected (normal left inverted right x axis y axis)   1366x768       60.0 +   40.1     1360x768       59.8     60.0     1024x768       60.0     800x600        60.3     56.2     640x480        59.9  VGA1 disconnected (normal left inverted right x axis y axis)HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 640mm x 360mm   1920x1080      60.0*+   50.0     30.0     25.0     30.0     25.0     24.0     1280x1024      60.0     1360x768       59.8     1280x720       60.0     50.0     1440x576       25.0     1024x768       60.0     1440x480       30.0     800x600        60.3     720x576        50.0     720x480        59.9     640x480        60.0     59.9  DP1 disconnected (normal left inverted right x axis y axis)after  xrandr --output LVDS1 --mode 1360x768 --output HDMI1 --same-as LVDS1Screen 0: minimum 320 x 200, current 1360 x 768, maximum 8192 x 8192LVDS1 connected 1360x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm   1366x768       60.0 +   40.1     1360x768       59.8*    60.0     1024x768       60.0     800x600        60.3     56.2     640x480        59.9  VGA1 disconnected (normal left inverted right x axis y axis)HDMI1 connected 1360x768+0+0 (normal left inverted right x axis y axis) 640mm x 360mm   1920x1080      60.0 +   50.0     30.0     25.0     30.0     25.0     24.0     1280x1024      60.0     1360x768       59.8*    1280x720       60.0     50.0     1440x576       25.0     1024x768       60.0     1440x480       30.0     800x600        60.3     720x576        50.0     720x480        59.9     640x480        60.0     59.9  DP1 disconnected (normal left inverted right x axis y axis)I tried stopping udev in case that was causing the toggling:root@mach:/home/rt# sudo service udev stop[ ok ] Stopping the hotplug events dispatcher: udevd.root@mach:/home/rt# xrandrScreen 0: minimum 320 x 200, current 3286 x 1080, maximum 8192 x 8192LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm   1366x768       60.0*+   40.1     1360x768       59.8     60.0     1024x768       60.0     800x600        60.3     56.2     640x480        59.9  VGA1 disconnected (normal left inverted right x axis y axis)HDMI1 connected 1920x1080+1366+0 (normal left inverted right x axis y axis) 640mm x 360mm   1920x1080      60.0*+   50.0     30.0     25.0     30.0     25.0     24.0     1280x1024      60.0     1360x768       59.8     1280x720       60.0     50.0     1440x576       25.0     1024x768       60.0     1440x480       30.0     800x600        60.3     720x576        50.0     720x480        59.9     640x480        60.0     59.9  DP1 disconnected (normal left inverted right x axis y axis)
How do I keep my display output from toggling by itself?
debian;display settings