Hi I was testing KWin with Project Neon on Kubuntu Raring and when I try to switch tabs and move my mouse in between the switch I get a random white area. Reproducible: Always Steps to Reproduce: 1. Try to switch tabs 2. While still having your hand on Alt+Tab , move the mouse with the other hand Actual Results: White areas appear. Expected Results: No white areas should be appearing
please attach the output of "qdbus org.kde.kwin /KWin supportInformation" and a screenshot (if you can)
Created attachment 77472 [details] White Area issue Screenshot showing issue
Created attachment 77473 [details] Support Information Support Information as requested
so you switch window tabs while doing Alt+tab? That sounds tricky
Erm, whoops, not tabs, I meant try switch windows using alt+tab
cacheTexture: true run "kcmshell4 kwincompositing", enter the second tab, filter for "blur", click the config button and uncheck the only checkbox. See whether the issue remains.
Nope. Still happens
to limit the possibilities of issues: * can you reproduce the issue on raring without neon? * can you reproduce on quantal (that's the current one, right) with neon?
* Happens on Raring + KWin ( The GLES binary ) 4.10 * Does not happen on Raring + Standard KWin 4.10 * Happens on Raring + KWin ( The GLES binary ) git * Does not happen on Raring + Standard KWin git Seems like something specific to the GLES version? I'll try and test with Quantal, though that will most likely take some time ( A couple of days at the very least )
kwin4_effect_wobblywindows kwin4_effect_coverswitch kwin4_effect_translucency kwin4_effect_slideback kwin4_effect_fade kwin4_effect_highlightwindow kwin4_effect_blur kwin4_effect_outline Please deactivate those effects and see wether the issue remains. If not, re-activate them one by one until it re-occurs.
Disabling kwin4_effect_outline causes the issue to disappear
given that it is only with GLES on Intel, I'd say it's the same as #315513
Outline effect is no more in master