Description of problem: Scroll wheel 'stops working' in the gtk application when I switch from a gtk application (e.g. Firefox, Firewall config) to a kde application. I can get it working again by clicking on the desktop (remove focus from the gtk app) and refocus on the gtk application. Rather complex isn't it :-) The steps to reproduce - below - will make things clear. Btw. I'm not sure if I've chosen the right component. Note 1. It's not a libinput issue (I've removed it). Note 2. It happens in Fedora 22 (VM and bare metal), not in Fedora 21 Version-Release number of selected component (if applicable): kwin-5.2.2-1.fc22.x86_64 How reproducible: Always Steps to Reproduce: 1. Open Firewall Configuration (Application -> System -> Firewall 2. Check that you can scroll in the Services list 3. Open a plasma/kde application e.g. systemsettings 4. Close systemsettings 5. Try to scroll in the Firewall's Services list (no? -> next step; Yes -> I've a problem ;-( ) 6. Click somewhere on the desktop ( remove focus from Firewall app ) 7. Click on the Firewall app (title bar). 8. Scroll in the Services list (scrolling works (?) again) Actual results: Scrolling stops working in gtk applications Expected results: Scrolling keeps working in gtk applications Additional info: Upsteam there is a bug report [1] that may be can related: "Mouse input problem after starting plasma 5" [1] https://bugs.kde.org/show_bug.cgi?id=343845
I see odd 'apps lose input/focus' sometimes too, a quick ALT-TAB usually fixes it. I've not yet been annoyed yet to dig deeper. :-/ I'll try to take note if it's just gtk apps losing input next time it happens.
Hi, May be this issue was also caused by the bad tar source. I can't reproduce it anymore. There is, however, a difference between scrolling in kde and gtk applications. If a kde application is inactive scrolling works, in gtk applications it doesn't. The gtk application has to be active. Martin Kho
OK, let's chaulk that up to toolkit idiosyncracies.