[Bugs] #4968 Sugar NORM: display hot plug is ignored

[Sugar Labs Bugs]

#4968: display hot plug is ignored
-------------------------------+--------------------------------
       Reporter:  quozl        |       Owner:
           Type:  defect       |      Status:  new
       Priority:  Normal       |   Milestone:  Unspecified
      Component:  Sugar        |     Version:  Git as of bugdate
       Severity:  Major        |    Keywords:
Distribution/OS:  Unspecified  |  Bug Status:  New
-------------------------------+--------------------------------
 With most desktop environments, hot plug of a new display automatically
 enables side-by-side mode.

 With Sugar, hot plug of a new display is ignored.  Workaround is to start
 Terminal, identify the displays, and enable the new display as a mirror,
 for example:

 {{{
 xrandr --output HDMI-1 --same-as eDP-1 --auto
 }}}

 Sugar must do this automatically.  It must not be left to the user or
 integrator.

 Sugar does easily support mirror mode.

 With some display managers, side-by-side mode is enabled during login.
 Sugar does not support side-by-side mode, because it does not support
 window management.  Activities cannot be dragged from one display to the
 other.  The activity ring is spread across the virtual display, and
 activities can only open on the primary display.  Workaround is to remove
 and reinsert the cable, or use `xrandr` with `--same-as`.

 Note: reproducing, developing, and testing of this problem cannot be done
 in virtual machines unless the environment supports display hot plug.

--
Ticket URL: <https://bugs.sugarlabs.org/ticket/4968>
Sugar Labs <http://sugarlabs.org/>
Sugar Labs bug tracking system