Comment 3 for bug 1766766

Here is more information for running touchscreen test cases:

In plainbox-provider-checkbox/units/touchscreen/jobs.pxu:

It runs the command 'manage_compiz_plugin unityshell disable' first, and it will return error and exit

***Error***
No such schema “org.compiz.core”
Traceback (most recent call last):
  File "/tmp/nest-gt_qbs74.d6786afeeb642652d005f47de78e4516f46ccb5b5c3aa9d361bb9a35a736f083/manage_compiz_plugin", line 43, in <module>
    plugins = eval(subprocess.check_output(["gsettings", "get", PATH, KEY]))
  File "/usr/lib/python3.6/subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.6/subprocess.py", line 418, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['gsettings', 'get', 'org.compiz.core:/org/compiz/profiles/unity/plugins/core/', 'active-plugins']' returned non-zero exit status 1.
No such schema “org.compiz.core”
Traceback (most recent call last):
  File "/tmp/nest-gt_qbs74.d6786afeeb642652d005f47de78e4516f46ccb5b5c3aa9d361bb9a35a736f083/manage_compiz_plugin", line 43, in <module>
    plugins = eval(subprocess.check_output(["gsettings", "get", PATH, KEY]))
  File "/usr/lib/python3.6/subprocess.py", line 336, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.6/subprocess.py", line 418, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['gsettings', 'get', 'org.compiz.core:/org/compiz/profiles/unity/plugins/core/', 'active-plugins']' returned non-zero exit status 1.
***Error***

In 18.04, there is no unity anymore.