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Qt for Python (PySide/Shiboken)

8 December 2025
2025-12-08×
8 December 2025
K
Hm. Qt 6 has event compression turned on by default I think (?).. maybe it's not when under Wayland... Regardless, there's a setting/env var that controls that. Let me dig it up.
A
Note that it works perfectly under XWayland, so it seems really related to the Qt Wayland backend.
Qt::AA_CompressHighFrequencyEvents Qt::AA_CompressTabletEvents I thought there was an environment variable for this too... Maybe that is not documented, or was removed... A customer I was working with encountered issues with specific tablets (wacom) that weren't working right that had something to do with event compression some years ago, so I was definitely investigating in that area...
K
If you can get a MRE for the issue and create a QTBUG for it, I can see about switching to Wayland to test.. last time I used Wayland on my hardware, I had issues with the Nvidia drivers.
I wasn't able to see any effect, I can confirm that those flags are true on X11 and false on Wayland. I didn't play with my app using wayland for some time, a the moment it's totally broken and unusable on Gnome, I even succeeded to freeze my whole desktop moving my window from one screen to another in expose mode 🤦‍♂️.
A
I really like Gnome as desktop and Qt as SDK but they can be a bit annoying when used together.
A
That's why I generally avoid gnome. Plasma has always been a better experience for me.
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