Mouseover menu description is black

Dr.Strangelove · 06-24-2021, 04:16 AM

I have a problem with the mouseover menu description. The area is completly black:

I compiled sigil 1.6.0 from source under Ubuntu 21.04. But the version 1.4.3 which came with Ubuntu has the same problem, so I guess it might be an incompatibilty with any depending package. Any idea?

DiapDealer · 06-24-2021, 06:54 AM

Quote:

Originally Posted by Dr.Strangelove

I have a problem with the mouseover menu description. The area is completly black:

I compiled sigil 1.6.0 from source under Ubuntu 21.04. But the version 1.4.3 which came with Ubuntu has the same problem, so I guess it might be an incompatibilty with any depending package. Any idea?

Is that a KDE/Plasma desktop environment? If so, it sounds like there might be an issue with the system Qt theming plugin. You could try changing your KDE desktop theme to verify if it changes anything.

Or from a command prompt you could try launching sigil without the system theme plugin:

Code:

unset QT_QPA_PLATFORMTHEME && sigil

Dr.Strangelove · 06-24-2021, 07:35 AM

no, it is xfce

DiapDealer · 06-24-2021, 07:52 AM

Oh. Thanks. I'll keep investigating. I'll try to get VM set up to match.

Moving this to its own thread since it doesn't seem to be directly related to Sigil 1.6.0

Dr.Strangelove · 06-24-2021, 08:23 AM

unset QT_QPA_PLATFORMTHEME && sigil works!
Does sigil for Linux use Qt?
Xubuntu, which runs under gtk3, uses qt5-style-plugins to use native Gtk+ style for Qt apps.

DiapDealer · 06-24-2021, 08:55 AM

Yes, sigil is a Qt app. I suspected it was a style issue. Have you tried different gtk styles to see if it's related to one style in particular? Because I just set up a stock xubuntu 21.04 VM, and the tooltips on the system Sigil 1.4.3 seem to work fine.

You could add that unset command to Sigil's launch script (/usr/bin/sigil or /usr/local/bin/sigil depending on whether you're using the system sigil or the self-compiled).

Are you using third-party video drivers? Qt 5.15 could have some issues with non-proprietary drivers.

Dr.Strangelove · 06-24-2021, 08:58 AM

as a workaround, I added the line
unset QT_QPA_PLATFORMTHEME
in /usr/local/bin after "export LD_LIBRARY_PATH"

Thank you :-)

DiapDealer · 06-25-2021, 09:10 AM

For the record: I've tried every theme that comes with Xubuntu 21.04 (with both the gkt2 and gkt3 QT_QPA_PLATFORMTHEME set) and can't reproduce the solid black tooltips. Did you use any utilities to customize your gtk theme colors?

Dr.Strangelove · 06-26-2021, 05:29 AM

I have qt5ct installed. Normally this is not necessary, but I needed it for configuring the look of certain KDE apps. I noticed an error message when opening qt5ct:
QT_QPA_PLATFORMTHEME environment variable is not set (required value:qt5ct)

I had to change /etc/X11/Xsession.d/56xubuntu-session and comment out
export QT_QPA_PLATFORMTHEME=gtk2

Now the problem is solved and I can revert my workaround. Thank your for your help.

DiapDealer · 06-26-2021, 07:40 AM

You can try Kvantum instead of qt5ct. It's typically a KDE thing, but it can be configured to work with gkt+ themes as well. It's what I use on Arch Linux to theme Qt apps. You can even use it to target individual apps. I can't remember if qt5ct offers the same granularity.

06-24-2021, 04:16 AM	#1
Dr.Strangelove Member Posts: 15 Karma: 10 Join Date: Mar 2019 Location: Hamburg/Germany Device: Kindle Paperwhite 7. Generation	Mouseover menu description is black I have a problem with the mouseover menu description. The area is completly black: I compiled sigil 1.6.0 from source under Ubuntu 21.04. But the version 1.4.3 which came with Ubuntu has the same problem, so I guess it might be an incompatibilty with any depending package. Any idea?

06-24-2021, 07:52 AM	#4
DiapDealer Grand Sorcerer Posts: 28,569 Karma: 204127028 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Oh. Thanks. I'll keep investigating. I'll try to get VM set up to match. Moving this to its own thread since it doesn't seem to be directly related to Sigil 1.6.0 Last edited by DiapDealer; 06-24-2021 at 08:03 AM.

06-26-2021, 07:40 AM	#10
DiapDealer Grand Sorcerer Posts: 28,569 Karma: 204127028 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	You can try Kvantum instead of qt5ct. It's typically a KDE thing, but it can be configured to work with gkt+ themes as well. It's what I use on Arch Linux to theme Qt apps. You can even use it to target individual apps. I can't remember if qt5ct offers the same granularity. Last edited by DiapDealer; 06-26-2021 at 07:44 AM.

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06-24-2021, 07:35 AM	#3
Dr.Strangelove Member Posts: 15 Karma: 10 Join Date: Mar 2019 Location: Hamburg/Germany Device: Kindle Paperwhite 7. Generation	no, it is xfce

06-24-2021, 08:23 AM	#5
Dr.Strangelove Member Posts: 15 Karma: 10 Join Date: Mar 2019 Location: Hamburg/Germany Device: Kindle Paperwhite 7. Generation	unset QT_QPA_PLATFORMTHEME && sigil works! Does sigil for Linux use Qt? Xubuntu, which runs under gtk3, uses qt5-style-plugins to use native Gtk+ style for Qt apps.

06-24-2021, 08:55 AM	#6
DiapDealer Grand Sorcerer Posts: 28,569 Karma: 204127028 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Yes, sigil is a Qt app. I suspected it was a style issue. Have you tried different gtk styles to see if it's related to one style in particular? Because I just set up a stock xubuntu 21.04 VM, and the tooltips on the system Sigil 1.4.3 seem to work fine. You could add that unset command to Sigil's launch script (/usr/bin/sigil or /usr/local/bin/sigil depending on whether you're using the system sigil or the self-compiled). Are you using third-party video drivers? Qt 5.15 could have some issues with non-proprietary drivers.

06-24-2021, 08:58 AM	#7
Dr.Strangelove Member Posts: 15 Karma: 10 Join Date: Mar 2019 Location: Hamburg/Germany Device: Kindle Paperwhite 7. Generation	as a workaround, I added the line unset QT_QPA_PLATFORMTHEME in /usr/local/bin after "export LD_LIBRARY_PATH" Thank you :-)

06-25-2021, 09:10 AM	#8
DiapDealer Grand Sorcerer Posts: 28,569 Karma: 204127028 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	For the record: I've tried every theme that comes with Xubuntu 21.04 (with both the gkt2 and gkt3 QT_QPA_PLATFORMTHEME set) and can't reproduce the solid black tooltips. Did you use any utilities to customize your gtk theme colors?

06-26-2021, 05:29 AM	#9
Dr.Strangelove Member Posts: 15 Karma: 10 Join Date: Mar 2019 Location: Hamburg/Germany Device: Kindle Paperwhite 7. Generation	I have qt5ct installed. Normally this is not necessary, but I needed it for configuring the look of certain KDE apps. I noticed an error message when opening qt5ct: QT_QPA_PLATFORMTHEME environment variable is not set (required value:qt5ct) I had to change /etc/X11/Xsession.d/56xubuntu-session and comment out export QT_QPA_PLATFORMTHEME=gtk2 Now the problem is solved and I can revert my workaround. Thank your for your help.

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