Having some trouble with the dconf and gsetting plugins

[elmehalawi]

I'm trying to set a dconf setting from an Ansible script (I cloned your repo). Here's my attempt:

- name: set resolution scaling
  dconf:
    key: /com/ubuntu/user-interface/scale-factor
    string: {'DP1': 12}

For some reason this isn't working. I also tried the equivalent using gsettings, and that also did not set the resolution scaling, and I don't get an error in either case. The strange thing is, if I set the scale factor to what it is right now, Ansible shows that nothing happened, but when I set it to something different, it shows that it was updated. That makes it sound like it's working perfectly, but for some reason, it's not actually changing.

It does change when I use either dconf write or gsettings set.

Anyway, I've been thinking about setting something like this up and this repo made it extremely easy. Thanks!

[JBKahn]

Sorry, didn't notice this. This makes sense, it might be a bracketing issue with the {, it isn't detecting a change because whatever value it's setting, it is setting successfully. What happens if you read the value after running the script, what is it?

[elmehalawi]

It remains unchanged, as it was before I run ansible. When I looked at dconf-editor, I noticed the type of scale-factor was a{si}, not just string, so I tried this:

gconftool2:
    key: /com/ubuntu/user-interface/scale-factor
    pair-car-type: 'string'
    pair-cdr-type: 'int'
    pair: ['DP1','12']

But this also did not change the value. Not sure if a{si} is considered a "pair" by gconftool2.

[elmehalawi]

It's weird because even though it's not a string, it actually does update using the regular dconf write and gsettings set commands...

[JBKahn]

turn on verbose mode to see the command it's running?

[elmehalawi]

I'm not really sure how to get the exact command. When I use -vvvv, it prints the command for running the plugin, but not the command the plugin itself runs. I was able to get this though:

ok: [127.0.0.1] => {
    "resolution": {
        "changed": true, 
        "key": "/com/ubuntu/user-interface/scale-factor", 
        "old_value": "{'DP1': 12}", 
        "value": "{'DP1': 10}"
    }
}

[JBKahn]

If you run this command, as is, locally then does it work?
https://github.com/JBKahn/provisioning-local/blob/master/ansible_modules/gconftool2#L93

[elmehalawi]

Actually, no. But dconf does work, and so does gsettings.

[JBKahn]

did you try it with the gsettings command in the module, as I formatted it?

[elmehalawi]

Yes, here's the setting with the gsettings:

- name: set resolution scaling
  gsettings:
    schema: com.ubuntu.user-interface
    key: scale-factor
    string: "{'DP1', 10}"

I also tried using \{'DP1', 10\}, but that also didn't work.

Here's the line in the module which reads the string into the value variable:

value = '\'{}\''.format(string_value)

And here's the function which returns the command:

def _set_value(module, schema, key, value):
    """Set value of setting, under `key` in `schema`, using gsettings to `value`."""
    return module.run_command(" ".join(['gsettings set {} {} {}'.format(schema, key, value)]))

It all seems to add up. When I try that same line in the terminal it works. Not sure what I'm missing here.

[JBKahn]

Are you sure the user it's using to set the value is the correct one? You
can try specifying that? You can also use a break point and test that line,
I think i wrote a blog post about testing modules a while back.

On Thu, Jul 28, 2016, 5:54 PM dublinus notifications@github.com wrote:

Yes, here's the setting with the gsettings:

• name: set resolution scaling
  gsettings:
  schema: com.ubuntu.user-interface
  key: scale-factor
  string: "{'DP1', 10}"

I also tried using {'DP1', 10}, but that also didn't work.

Here's the line in the module which reads the string into the value
variable:

value = ''{}''.format(string_value)

And here's the function which returns the command:

def _set_value(module, schema, key, value):
"""Set value of setting, under key in schema, using gsettings to value."""
return module.run_command(" ".join(['gsettings set {} {} {}'.format(schema, key, value)]))

It all seems to add up. When I try that same line in the terminal it
works. Not sure what I'm missing here.

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