On Friday 09 May 2014 16:29:32 Sebastian Kügler wrote: > On Friday, May 09, 2014 16:03:31 Martin Gräßlin wrote: > > On Friday 09 May 2014 15:56:53 Sebastian Kügler wrote: > > > Since 30d2489930 in plasma-workspace, we're setting the QSG_RENDER_LOOP > > > to > > > "basic", if it's not specified otherwise by an env var. This has been > > > done > > > to prevent crashes in the threaded renderer, but unfortunately, it seems > > > to > > > come with its own set of problems: Plasma produces artifacts, high CPU > > > load > > > and grinds to a complete halt after a while. > > > > > > > > > > > > I've tried setting the QSG_RENDER_LOOP to threaded, and that does indeed > > > prevent those problems, but obviously, plasma-shell is more crashy with > > > it. > > > Now some of those crashes (at least one I've observed) is indeed in the > > > scenegraph, but I've also seen other crashes (one in groupmanager of the > > > taskbar, indirectly, not sure if that's related). > > > > > > > > > > > > I think we might need to revisit this patch, and find a "stable" way > > > forward. Just switching to basic renderloop doesn't seem to be the > > > solution. :/ > > > > Please note that Qt itself switched it off for all of Mesa. The change now > > was more to only have one possible way of usage and preventing us hunting > > down non-reproducable bugs. > > > > The crashes we see with threaded render loop cannot be fixed or worked > > around if I understand the Qt commit disabling it for all of Mesa > > correctly. Have a look at the plasma-devel archives, I sent a FYI mail > > some > > time back. > > I remember that one. That email doesn't say much, except for your "basic > works for me" in kwin. I didn't see any problems with kwin, only with > plasma-shell, and I only changed it for plasma-shell in my tests: that made > a difference (on Intel).
no I think I meant another mail, try http://comments.gmane.org/gmane.comp.kde.devel.plasma/30179 :-) Cheers Martin
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