> > This is definitely reproducible. The current Qt5 version is 5.9.2-2 on my > > quad G5, and 5.8.4 on G4 powerbook. Both machines are not reacting on > > mousewheel events at all. I've tried KDE, LXQt. GTK2/3 apps are not > > affected at all. > Well, this is totally strange, as the only report we have heard so far is > from you.
This might be because others are not using Qt5 at all. It's strange, but understandable in case that newer Qt5 is using chromium as a web backend and it is not compileable to anything except x86 and arm and this renders Qt5 almost unusable in modern cases. > I understand that you tried on two machines. Just to be clear: have you > tried with a new user? The older installation on G5 is working the same in all users (tried new one). The G4 installation on powerbook is the fresh one. > There is the chance that you might have configured something in the same way > in both machines. If you still can reproduce this bug with a new user then > we can file a bug upstream. Both installations are independent and on older one (G5 one) I've tried several users. > Actually you should do it yourself, as I don't have any ways of reproducing > this bug. Please file the upstream bug at https://bugreports.qt.io and then > please send the bug number here. I'll happily subscribe to the bug to follow > it and, if possible at all, help. Reading the bugs there I've found that it is possible that the problem is in QXcbAtom::ButtonWheel* wrong detection. I'm yet unable to find how does Qt5 detects wheel buttons and where from it is getting the mouse events. The xinput shows everything ok, and Qt4 and GTK2/3 apps all are using the wheel perfectly Regarding the bugreport. I should register on the site and when I will fill bug report I'll attach it here. -- WBR, Vladimir Berezenko