[lubuntu-users] [SOLVED] Re: Strange, dark, look-and-feel of qjackctl, qsynth, and qmidiroute on Lubuntu 18.04

[Israel]

On 1/10/19 11:02 PM, Aere Greenway wrote:
> On 1/10/19 8:52 PM, Aere Greenway wrote:
>> On 1/10/19 6:46 PM, Israel wrote:
>>> On 1/9/19 11:47 AM, Eric Bradshaw wrote:
>>>>
>>>> ...
>>>>
>>>>
>>>> Dear Aere,
>>>>
>>>> The C4C Lubuntu 18.04 ReSpin now uses pkexec
>>>> [https://www.freedesktop.org/software/polkit/docs/0.015/pkexec.1.html]
>>>> in place of gksu. By utilizing the method put forth by and the
>>>> policy files created by Allen Guarnes
>>>> [https://www.allenguarnes.com/technology/resolving-the-missing-gksu-command-in-ubuntu-18-04/]
>>>> you should be able to do what you want and have everything look
>>>> just the same as it did. In ebery case I've tried, I've been able
>>>> to replace gksu with pkexec. For example, the command gksu pcmanfm
>>>> can be replaced with pkexec pcmanfm.
>>>>
>>>> Eric
>>>> --
>>>> Thank you,
>>>> God bless you,
>>>> Computers4Christians
>>>> http://computers4christians.org
>>>>
>>> Hi,
>>>
>>> I agree that pkexec is the current best practice.  You will need to
>>> make a pkexec file for the programs if they do not have one, though.
>>>
>>> I am not sure though if systemd is replacing PolicyKit (they've
>>> replaced many many many things).  So this may be a temporary
>>> solution (should work for a few years at least).
>>>
>>> Aere,
>>>
>>> I did some looking around and Arch (as per usual) has a really
>>> helpful page about this
>>>
>>> https://wiki.archlinux.org/index.php/Uniform_look_for_Qt_and_GTK_applications#QGtkStyle
>>>
>>> tl;dr
>>>
>>> If they are Qt4 apps
>>>
>>> echo "[Qt]
>>>
>>> style=GTK+" >> ~/.config/Trolltech.conf
>>>
>>> If they are Qt5
>>>
>>> sudo apt install qt5-style-plugins
>>>
>>> Then you need to set this variable (so I am adding it to the xinitrc)
>>>
>>> |echo "QT_QPA_PLATFORMTHEME=gtk2" >> .~/xinitrc|
>>>
>>> This should get you back on track :D
>>>
>>> -- 
>>> Regards
>>>
>> Israel:
>>
>> They are definitely qt5 applications. 
>>
>> I have attached a screenshot of the error dialog to this e-mail as a
>> ".png" file. 
>>
>> I tried what you said to do for qt5, with results as follows:
>>
>> qt5-style-plugins were already installed, and the latest version. 
>>
>> Your echo command didn't work.  In reading the URL info, I think it
>> should have been:
>>
>> |echo "QT_QPA_PLATFORMTHEME=gtk2" >> |||~/|.xinitrc
>> |
>>
>> |But that didn't work either.  Signing-in didn't work either. 
>> |
>>
>> |If I could just figure out where lxqt-sudo is defining
>> QT_STYLE_OVERRIDE, and remove it, I think I would be able to fix my
>> systems. 
>> |
>>
>> -- 
>> Sincerely,
>> Aere
>>
> With the helpful information you provided, I was able to finally
> figure out how to fix my systems. 
>
> I edited the ".config/lxsession/lubuntu/desxtop.conf" file of my home
> folder. 
>
> In the "[Environment]" section, I commented-out (put a period in front
> of) the following lines:
>
> qt/force_theme=gtk
>
> qt/platform=lxqt
>
>
> I then logged-out, and signed-in again.  I can now run
> Menu...Preferences...Qt5 Settings
>
> But I don't have to - the problem (the strange dark color scheme, and
> excessively large window sizes) has gone away. 
>
> Thank you for all your help, and also thanks for the suggestions of
> others on this list. 
>
> -- 
> Sincerely,
> Aere

Hi Aere,

Thanks for catching my typo there :P

I am so glad you got it figured out!!  Woo-Hoo!! I add [SOLVED] in the
thread header in case anyone searches for this issue :D

-- 
Regards

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