no OSK in Plasma Mobile

[Heather Ellsworth]

On 03/17/2018 02:41 PM, Martin Flöser wrote:
> 
> 
> Am 17. März 2018 02:01:24 MEZ schrieb Heather Ellsworth <heather.ellsworth at puri.sm>:
>> On 03/15/2018 09:10 PM, Bhushan Shah wrote:
>>> Hello Heather,
>>>
>>> On Thu, Mar 15, 2018 at 06:57:27PM -0600, Heather Ellsworth wrote:
>>>> I've been running Plasma Mobile on my iMX6 dev board (precursor to
>> the
>>>> dev kit for the Librem 5) and I've notices there's no onscreen
>> keyboard.
>>>> Is it there and I'm just not initializing it? Or what is the story
>> with
>>>> the OSK in Plasma Mobile?
>>>
>>> For OSK, you just need to install qtvirtualkeyboard-plugin package,
>> it
>>> should give you working on-screen-keyboard for the Qt applications.
>> It
>>> is however possible that QtVirtualKeyboard is disabled by default if
>> you
>>> have keyboard attached. In that case you can enable it by clicking on
>>> virtualkeyboard icon in top drawer.
>>>
>>> You can also "export QT_VIRTUALKEYBOARD_STYLE=Plasma" for better
>> theming
>>> integration with Plasma Mobile.
>>
>> After installing qtvirtualkeyboard-plugin and exporting
>> QT_VIRTUALKEYBOARD_STYLE, we still do not see a keyboard icon in the
>> top
>> left of the Plasma Mobile desktop.
>>
>> Similarly, we do not see the icon after manually enabling the keyboard
>> with:
>>
>> $ qdbus org.kde.KWin /VirtualKeyboard
>> org.kde.kwin.VirtualKeyboard.enable
>>
>> However, after enabling the keyboard with the above qdbus command, we
>> see the keyboard pop up when a text field is clicked (like the search
>> bar, kwrite, konsole) but then the keyboard immediately goes away.
>>
>> Also in the lock screen, I see the virtual keyboard icon in the bottom
>> left. When I click it, the virtual keyboard appears and does not
>> disappear. Then I can type in the password (using Ctrl+Super to guide
>> my
>> mouse) to log back in.
>>
>> So the virtual keyboard works, but when in the desktop session the
>> keyboard goes away right after it appears. Any troubleshooting advice
>> you have would be helpful.
>>
> 
> It might sound stupid, but just unplug the physical keyboard. Then it should work best. If the keyboard still hides, run the apps with WAYLAND_DEBUG=1 then we can see what's going on and why it hides. It should only hide if the application requests it and that's something we can see in the debug output.
> 

Thank you for the suggestion. It turns out that the issue was actually
setting the QT_IM_MODULE:

$ export QT_IM_MODULE=qtvirtualkeyboard

With this variable set, I see the keyboard come up and then disappear
when a text field is clicked. I was testing with this variable on
Friday. However with this variable unset, the keyboard seems to _stay
around_ and be usable when a text field is clicked. So the trick is to
not set this :)

Cheers,
Heather

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