On 1/9/19 6:47 AM, Israel wrote:
On 1/8/19 5:04 PM, Aere Greenway wrote:
On 1/8/19 2:07 PM, Israel wrote:
On 1/7/19 10:06 PM, Aere Greenway wrote:
Lubuntu Users Group:
(Sorry - I initially sent this from the wrong e-mail address)
To mount my NFS drive on my local client systems, I needed something
to get ask the user for root privilege.
On Lubuntu 16.04, I used gksu, but on Lubuntu 18.04, that package
appears to be unavailable.
So in its place, I installed lxqt-sudo, and used that.
However, after installing that, a number of applications no longer
have their normal Gnome look-and-feel, but instead, have a dark look,
and take up a huge (much more than necessary) amount of screen
real-estate.
The applications I'm having this problem with, are:
qjackctl
qsynth
qmidiroute
Does anyone know how I can change them back to their former Gnome
look-and-feel (or even explain what has happened)?
The strange thing is, on some of my 18.04 systems, this didn't happen
- those applications still have their usual Gnome look-and-feel.
I have been unable to determine why it is okay on some of my systems,
and not on other systems.
- Aere
Aere,
Those are Qt apps, are you using LXDE or LXQt?
If you are using LXDE then, installing lxqt-sudo probably installed some
more things, and changed a Qt setting.
You can make sure you have the Qt GTK+ engine
sudo apt install qt5-gtk-platformtheme
This hopefully will fix it. If not, look for a Qt settings (or KDE
settings) in your /usr/share/applications/
Then launch this and change it to the qt gtk+ engine
Israel:
Thank you for your expertise, and your ideas.
I am using LXDE.
I performed the apt install qt5-gtk-platformtheme statement. It
indicated the latest version of it was already installed, and the
newest version.
I launched qjackctl, and it still has the strange, dark, look-and-feel.
I couldn't find anything in /usr/share/applications/ that resembled QT
settings, or KDE settings. In Synaptic Package Manager, I searched
for "kde-settings", "kdesettings", "qt-settings", and "qtsettings",
but none of those searches found anything.
Is there something I could install that would allow me to change the
settings?
Hi Aere,
I am not 100% sure what needs to be installed, but I found an answer.
The main thing you need to do is change the Qt theme to use the Qt GTK+
engine. I am sure there is a way to change the theme from the terminal
(like with GTK), but I don't use Qt as much as FLTK/GTK toolkits.
I found this question on AskUbuntu:
https://askubuntu.com/questions/716714/change-qt5-theme
tl;dr
Use either of these:
lxqt-config
qt5ct
Israel:
The askubuntu link was helpful. I installed qt5ct, and ran it.
It displayed an error-message dialog, reporting the following:
Please remove the QT_STYLE_OVERRIDE environment variable
The QT_QPA_PLATFORMTHEME environment variable is not set correctly
(the window has only an "OK" button)
Unfortunately, I could not find anything for configuring the evironment
variables.
How do I change the environment variables that are in-effect when I
sign-on to my Lubuntu system?
- Aere
--
Sincerely,
Aere
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