Hi Daniel, Eero, On Fri, May 4, 2018 at 2:41 PM, Daniel Stone <dan...@fooishbar.org> wrote: > Hi Mario, > > On 4 May 2018 at 13:14, Mario Kleiner <mario.kleiner...@gmail.com> wrote: >> Indeed, i found a Mesa bug yesterday which can cause Mesa's >> PresentPixmap request to spuriously feed garbage targetMSC's >> into the driver under some conditions. However, while other >> video drivers seem to cope relatively well with that, modesetting >> ddx causes KDE-5's plasmashell to lock up badly quite frequently, >> and my suspicion is that the code removed in this commit is one >> major source of the extra fragility. > > Thanks a lot for tracking this down! Adding Eero to Cc, who I think > stumbled on this very problem.
You mean the Mesa bug? I'll quickly send out something half finished for discussion to mesa-devel, cc'ed to xorg-devel, which "fixes" the bug in two different ways, both are not optimal, but better than nothing. Lacking this fix, KDE-5 is pretty much unusable due to frequent lockup on server 1.20 with the modesetting-ddx atm. -mario > > Cheers, > Daniel _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
