@gqanubis @jldark With qgnomeplatform 0.7.1-1 installed, what’s the output of the following? Replace qbittorrent with another Qt app if applicable:
QT_LOGGING_RULES="qt.qpa.qgnomeplatform=true" qbittorrent
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QT_LOGGING_RULES="qt.qpa.qgnomeplatform=true" cantata 17:05:17
qt.qpa.qgnomeplatform: Font name: "Noto Sans" (size 11 )
qt.qpa.qgnomeplatform: Monospace font name: "Noto Sans Mono Medium" (size 11 )
qt.qpa.qgnomeplatform: TitleBar font name: "Noto Sans" (size 11 )
qt.qpa.qgnomeplatform: Cursor blink time: 1200
qt.qpa.qgnomeplatform: Double click time: 400
qt.qpa.qgnomeplatform: Long press time: 500
qt.qpa.qgnomeplatform: Double click distance: 5
qt.qpa.qgnomeplatform: Dnd drag threshold: 8
qt.qpa.qgnomeplatform: Password hint timeout: 0
qt.qpa.qgnomeplatform: Icon theme: "Papirus-Dark"
qt.qpa.qgnomeplatform: Theme name: "kvantum"
qt.qpa.qgnomeplatform: Dark version: no
So, where can I set Dark version to true ?
It’s not detecting your Kvantum theme, what theme did you choose in Kvantum Manager?
It detects whether the Kvantum theme is a dark version or not. Example:
qt.qpa.qgnomeplatform: Theme name: "Adwaita-maia-dark"
qt.qpa.qgnomeplatform: Dark version: yes
Whatever the theme I use, it always returns “kvantum” (that was not the case with the previous version of qgnomeplatform), despite it’s correctly set in kvantum config :
cat kvantum.kvconfig:
[General]
theme=KvAdaptaMaiaBlack
I got the same issue. I had to downgrade qgnomeplatform from 0.7.1-1 to 0.7.0-1 to solve.
Oops, missed a post when I moved them to this topic, so one is out of order.
What GTK / GNOME Shell theme are you using?
What’s the output of:
cat /etc/environment
And if it exists:
cat ~/.profile
When pasting terminal output, highlight it and use the Preformatted text </> button.
Alternatively, add three backticks ` above and below the text:
```
text
```
/etc/environment :
#
# This file is parsed by pam_env module
#
# Syntax: simple “KEY=VAL” pairs on separate lines
#
CALIBRE_USE_DARK_PALETTE=1
QT_QPA_PLATFORMTHEME=“gnome”
QT_STYLE_OVERRIDE=“kvantum”
QT_AUTO_SCREEN_SCALE_FACTOR=1
Note :
Trying to override style I got this error :
Available styles: Adwaita-Dark, Adwaita, kvantum-dark, kvantum, Windows, Fusion
I set QT_STYLE_OVERRIDE to kvantum-dark and now evrything is fine … at least with dark theme
qt.qpa.qgnomeplatform: Icon theme: “Papirus-Dark”
qt.qpa.qgnomeplatform: Theme name: “kvantum-dark”
qt.qpa.qgnomeplatform: Dark version: yes
So it seems that the real Kvantum theme is not fully taken into account as it was the case in the previous version where I got the real theme name and not “kvantum-dark”
My output is:
/etc/environment
#
# This file is parsed by pam_env module
#
# Syntax: simple "KEY=VAL" pairs on separate lines
#
QT_AUTO_SCREEN_SCALE_FACTOR=1
QT_QPA_PLATFORMTHEME="gnome"
QT_STYLE_OVERRIDE="kvantum"
# Force to use Xwayland backend
# QT_QPA_PLATFORM=xcb
#Not tested: this should disable window decorations
# QT_WAYLAND_DISABLE_WINDOWDECORATION=1
EDITOR=/usr/bin/nano
.profile
export EDITOR=/usr/bin/nano
export QT_QPA_PLATFORMTHEME="gnome"
export QT_AUTO_SCREEN_SCALE_FACTOR=0
export GTK2_RC_FILES="$HOME/.gtkrc-2.0"
export QT_STYLE_OVERRIDE="kvantum"
Interestingly, if I install the qt5ct package, then Kvantum themes start correctly applying.
Edit: I can also confirm that downgrading qgnomeplatform from 0.7.1-1 to 0.7.0-1 resolves the issue for me, without the need to have qt5ct installed.
What GTK theme are you guys using? Can you reproduce it with Adwaita-dark or Adwaita-maia-dark?
QGnomePlatform checks if the theme name has “-dark” in the name.
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I tested with gtk theme Adwaita-blue-dark
With the last qgnomeplatform I get :
qt.qpa.qgnomeplatform: Icon theme: “Papirus-Dark”
qt.qpa.qgnomeplatform: Theme name: “kvantum-dark” (QT_STYLE_OVERRIDE)
With the previous qgnomeplatform :
qt.qpa.qgnomeplatform: Icon theme: “Papirus-Dark”
qt.qpa.qgnomeplatform: Theme name: “Adwaita-blue-dark” (gtk theme used)
So qgnomeplatform in its last version doesn’t check the real gtk theme name but seems to fallback to the value of QT_STYLE_OVERRIDE that’s why dark theme are "OK " when I set it to kvantum-dark
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Hmm… it seems to be due to this commit:
Ok I had a look at the code
If I unset QT_STYLE_OVERRIDE gtk theme is used :
qt.qpa.qgnomeplatform: Icon theme: “Papirus-Dark”
qt.qpa.qgnomeplatform: Theme name: “WhiteSur-dark-solid”
But the look isn’t exactly the same, better when I set QT_STYLE_OVERRIDE to kvantum-dark to my taste …
Hey!
I’m new to Manjaro, how would I go about downgrading the package? I’ve looked online and I can’t find a .tar.gz file that works and the file isn’t in my pacman cache.
Thanks if anyone can help 
Hello @ethan_the_ethan welcome.
sudo pacman -S downgrade to install “downgrade” after that you can use that to downgrade certain packages.
Usage: downgrade [option...] <pkg> [pkg...] [-- pacman_option...]
It will give you a list with possible candidates that are either local (cache) or remote on a mirror which you can downgrade to.
Hey @Th3Z0ne, thanks for responding!
Running sudo downgrade qgnomeplatform gave me a message about setting an environment variable, which I did, and then just prompted to redownload the original version. I had a look on the Arch Linux Repo Archives and I couldn’t find the old version of qgnomeplatform.
I managed to solve it another way following what was said in this forum post from last year (I had a link here but I can’t include links in my replies apparently) by adding the flag QT_QPA_PLATFORMTHEME=qt5ct to ~/.profile.
Thanks for the help anyway and responding so quickly
Well, I couldn’t get my setup to play nicely with the latest qgnomeplatform package, despite @ethan_the_ethan helpful suggestions, so I just uninstalled it. The QT apps appear to be taking the kvantum themes well enough without it, so hopefully I am not missing anything by not having it installed.
I’m having the same problem after updating manjaro stable…
How can this be solved!!?? I’m having much trouble reading in QT applications
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Same issue here text is barely readable for me
I have just noticed that I am having the same problem. I use very few Qt programs, but when I loaded Calibre, the main interface was virtually unreadable.
I don’t know about Manjaro, but in Ubuntu I added QT_QPA_PLATFORMTHEME=qt5ct to my ~/.pam_environment and it works like a charm.